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  • Gas boilers
    • Greenstar 42CDi Classic
      • Watch a video about condensing boilers
      • Accessories
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
      • Internal view
      • Customer testimonials
      • Technical bulletins
      • Casing dimensions and pipework connections
    • Greenstar 38CDi Classic
      • Watch a video about condensing boilers
      • Accessories
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
      • Internal view
      • Customer testimonials
      • Technical bulletins
    • Greenstar 34CDi Classic
      • Watch a video about condensing boilers
      • Accessories
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
      • Internal view
      • Customer testimonials
      • Technical bulletins
    • Greenstar 29CDi Classic
      • Watch a video about condensing boilers
      • Accessories
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
      • Internal view
      • Customer testimonials
      • Technical bulletins
    • Greenstar 36CDi Compact
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Accessories
    • Greenstar 32CDi Compact
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Accessories
    • Greenstar 28CDi Compact
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Accessories
    • Greenstar 42CDi
      • Accessories
    • Greenstar 37CDi
      • Accessories
    • Greenstar 30CDi
      • Accessories
    • Greenstar 27CDi
      • Accessories
    • Greenstar 30Si
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
    • Greenstar 25Si
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
    • Greenstar 28i junior
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
    • Greenstar 24i junior
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
    • Greenstar 40CDi Regular
      • Accessories
      • Controls
      • CondenseSure auxiliary siphon
    • Greenstar 30CDi Regular
      • Accessories
      • Controls
      • CondenseSure auxiliary siphon
    • Greenstar 30CDi Classic System
      • Accessories
      • Pipework connections and casing dimensions
      • CondenseSure auxiliary siphon
      • Controls
      • Optional plug-in controls
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
    • Greenstar Ri 12, 15, 18 & 24 (discontinued Jan 11)
    • Greenstar i System 12, 15, 18 & 24 (discontinued Jan 11)
    • Greenstar Highflow 550CDi
      • Accessories
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
      • Pipework connections and casing dimensions
    • Greenstar Highflow 440CDi
      • Accessories
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
      • Pipework connections and casing dimensions
    • Greenstar 40CDi Classic Regular
      • Accessories
      • CondenseSure auxiliary siphon
      • Controls
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
    • Greenstar Highflow 440 (discontinued October 2008)
      • Accessories
    • Greenstar 30CDi Classic Regular
      • Accessories
      • CondenseSure auxiliary siphon
      • Controls
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
    • Greenstar 24Ri
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar 18Ri
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar 15Ri
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar 12Ri
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar FS 42CDi Regular
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Pipework connections and casing dimensions
    • Greenstar FS 30CDi Regular
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
      • Pipework connections and casing dimensions
    • Greenstar 30CDi System
      • Controls
      • Accessories
      • Optional plug-in controls
      • Pipework connections and casing dimensions
      • CondenseSure auxiliary siphon
    • Greenstar 24i System
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
      • Pipework connections and casing dimensions
    • Greenstar 18i System
      • Controls
      • Optional plug-in controls
      • Internal view
      • Pipework connections and casing dimensions
      • Accessories
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar 15i System
      • Internal view
      • Pipework connections and casing dimensions
      • Controls
      • Accessories
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar 12i System
      • Controls
      • Internal view
      • Accessories
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
      • Pipework connections and casing dimensions
    • 230 (discontinued December 1997)
    • 240 BF (discontinued December 1997)
    • 240 OF (discontinued December 1997)
    • 240 RSF (discontinued December 1997)
    • 280 RSF (discontinued February 1997)
    • 350 RSF (discontinued July 1998)
    • Highflow 400 BF (discontinued February 2002)
    • Highflow 400 OF (discontinued February 2002)
    • Highflow 400 RSF (discontinued February 2002)
    • Greenstar 25 HE Combi (discontinued August 2003)
    • Greenstar 25CDi (discontinued April 2007)
    • Greenstar 30CDi (04/2005 - 03/2007)
    • Greenstar 28 HE System (discontinued August 2003)
    • Greenstar 29 HE Conventional (discontinued August 2003)
    • Greenstar 40 HE Conventional
    • Greenstar 30 HE Combi (discontinued August 2003)
    • Greenstar 30 HE Plus Combi (discontinued August 2003)
    • Greenstar 35 HE Plus Combi (discontinued August 2003)
    • Greenstar 40 HE Plus Combi (discontinued)
    • Greenstar 35CDi (discontinued April 2007)
    • Greenstar 40CDi (discontinued April 2007)
    • 24i (discontinued November 2004)
    • 28i (discontinued November 2005)
    • 24Si II (discontinued June 2007)
    • 25Si (old model: October 2001 - March 2002)
    • 28Si II (discontinued June 2007)
    • 28Si (February 2000 - March 2002)
    • 24i Junior RSF (discontinued Aug 2007)
    • 28i Junior RSF (discontinued Aug 2007)
    • 24CDi BF (discontinued March 2005)
    • 24CDi OF (discontinued March 2005)
    • 24CDi RSF (discontinued June 2007)
    • 26CDi Xtra RSF (discontinued June 2007)
    • 28CDi RSF (discontinued June 2007)
    • 35CDi (discontinued October 2001)
    • 35CDi II RSF (discontinued Aug 2007)
    • 14/19 CBi (discontinued December 2006)
    • 19/24 CBi (discontinued December 2006)
    • 9/14 CBi (discontinued December 2006)
    • 15SBi RSF (discontinued January 2007)
    • 24SBi RSF (discontinued January 2007)
    • Highflow 400 Electronic BF (discontinued March 2005)
    • Highflow 400 Electronic OF (discontinued March 2005)
    • Highflow 400 Electronic RSF (discontinued March 2006)
  • Oil boilers
    • Greenstar Heatslave 25/32
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar Heatslave 18/25
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar Heatslave 12/18
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar Heatslave External 25/32
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar Heatslave External 18/25
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar Heatslave External 12/18
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar Camray 25/32
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar Camray 18/25
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar Camray 12/18
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar Camray Utility 25/32
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Controls
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar II HE 12/22 RS
    • Danesmoor Kitchen CF 32/50 (discontinued December 2001)
    • Danesmoor Kitchen CF 50/70 (discontinued January 1998)
    • Danesmoor FS 12/18 (discontinued December 2007)
    • Danesmoor FS 18/25 (discontinued December 2007)
    • Heatslave CF 12/14 Combi (discontinued December 2007)
    • Heatslave CF 15/19 Combi (discontinued December 2007)
    • Heatslave CF 20/25 Combi (discontinued December 2007)
    • Heatslave CF 26/32 Combi (discontinued December 2007)
    • Danesmoor Kitchen CF 12/14 (discontinued December 2007)
    • Danesmoor Kitchen CF 15/19 (discontinued December 2007)
    • Danesmoor Kitchen CF 20/25 (discontinued December 2007)
    • Danesmoor Kitchen CF 26/32 (discontinued December 2007)
    • Danesmoor Kitchen RS 12/14 (discontinued December 2007)
    • Danesmoor Kitchen RS 15/19 (discontinued December 2007)
    • Danesmoor Kitchen RS 20/25 (discontinued December 2007)
    • Danesmoor Kitchen RS 26/32 (discontinued December 2007)
    • Danesmoor System CF 12/14 (discontinued December 2007)
    • Danesmoor System CF 15/19 (discontinued December 2007)
    • Danesmoor System CF 20/25 (discontinued December 2007)
    • Danesmoor System RS 12/14 (discontinued December 2007)
    • Danesmoor System RS 15/19 (discontinued December 2007)
    • Danesmoor System RS 20/25 (discontinued December 2007)
    • Heatslave RS 12/14 Combi (discontinued December 2007)
    • Heatslave RS 15/19 Combi (discontinued May 2011)
    • Heatslave RS 20/25 Combi (discontinued May 2011)
    • Heatslave RS 26/32 Combi (discontinued May 2011)
    • Danesmoor WM 12/19 (discontinued December 2007)
    • Greenstar Camray Utility 18/25
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Controls
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar Camray Utility 12/18
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Controls
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar Camray External 25/32
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
    • Greenstar Camray External 18/25
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
    • Greenstar Camray External 12/18
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
    • Greenstar Danesmoor WM 18/25
      • Accessories
      • Controls
      • Internal view
      • Casing dimensions and pipework connections
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
    • Greenstar Danesmoor WM 12/18
      • Accessories
      • Controls
      • Internal view
      • Casing dimensions and pipework connections
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
    • Greenstar Utility 50/70
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar Utility 32/50
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar Utility 18/25
      • Accessories
      • Controls
      • Internal view
    • Greenstar Danesmoor 18/25 (discontinued Sept 2011)
      • Accessories
      • Controls
      • Internal view
    • Greenstar Camray system 25/32
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Controls
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar Camray system 18/25
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Controls
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar Camray System 12/18
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Controls
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar Camray Utility System 25/32
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar Camray Utility System 18/25
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar Camray Utility System 12/18
      • Accessories
      • Controls
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar Camray External System 25/32
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
    • Greenstar Camray External System 18/25
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
    • Greenstar Camray External System 12/18
      • Accessories
      • Internal view
      • Pipework connections and casing dimensions
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
  • LPG boilers
    • Greenstar 42CDi Classic
      • Watch a video about condensing boilers
      • Accessories
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
      • Internal view
      • Customer testimonials
      • Technical bulletins
    • Greenstar 38CDi Classic
      • Watch a video about condensing boilers
      • Accessories
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
      • Internal view
      • Customer testimonials
      • Technical bulletins
    • Greenstar 34CDi Classic
      • Watch a video about condensing boilers
      • Accessories
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
      • Internal view
      • Customer testimonials
      • Technical bulletins
    • Greenstar 29CDi Classic
      • Watch a video about condensing boilers
      • Accessories
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
      • Internal view
      • Customer testimonials
      • Technical bulletins
    • Greenstar 36CDi Compact
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Accessories
    • Greenstar 32CDi Compact
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Accessories
    • Greenstar 28CDi Compact
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Accessories
    • Greenstar 42CDi
      • Accessories
    • Greenstar 37CDi
      • Accessories
    • Greenstar 30CDi
      • Accessories
    • Greenstar 27CDi
      • Accessories
    • Greenstar 30Si
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
    • Greenstar 25Si
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
    • Greenstar 28i junior
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
    • Greenstar 24i junior
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • Casing dimensions and pipework connections
      • CondenseSure auxiliary siphon
    • Greenstar 40CDi Regular
      • Accessories
      • Controls
      • CondenseSure auxiliary siphon
    • Greenstar 30CDi Regular
      • Accessories
      • Controls
      • CondenseSure auxiliary siphon
    • Greenstar Highflow 550CDi
      • Accessories
      • Watch a video about condensing boilers
      • Customer testimonials
      • Internal view
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar FS 42CDi Regular
      • Accessories
      • Watch a video about condensing boilers
      • Customer testimonials
      • Internal view
      • Controls
      • Technical bulletins
      • Pipework connections and casing dimensions
    • Greenstar 15i System
      • Internal view
      • Pipework connections and casing dimensions
      • Controls
      • Accessories
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar 18i System
      • Internal view
      • Pipework connections and casing dimensions
      • Controls
      • Accessories
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar 40CDi Classic Regular
      • Accessories
      • CondenseSure auxiliary siphon
      • Controls
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
    • Greenstar 30CDi Classic Regular
      • Accessories
      • CondenseSure auxiliary siphon
      • Controls
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
    • Greenstar 30CDi Classic System
      • Accessories
      • Pipework connections and casing dimensions
      • CondenseSure auxiliary siphon
      • Controls
      • Optional plug-in controls
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
    • Greenstar Highflow 440 (discontinued October 2008)
      • Accessories
    • Greenstar Highflow 440CDi
      • Accessories
      • Watch a video about condensing boilers
      • Customer testimonials
      • Internal view
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
    • Greenstar FS 30CDi Regular
      • Accessories
      • Watch a video about condensing boilers
      • Customer testimonials
      • Internal view
      • Controls
      • Technical bulletins
      • Pipework connections and casing dimensions
      • CondenseSure auxiliary siphon
    • Greenstar 24Ri
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar 18Ri
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar 15Ri
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar 12Ri
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • CondenseSure auxiliary siphon
    • Greenstar 30CDi System
      • Accessories
      • Controls
      • Optional plug-in controls
      • Pipework connections and casing dimensions
      • CondenseSure auxiliary siphon
    • Greenstar 24i System
      • Accessories
      • Controls
      • Internal view
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
      • Pipework connections and casing dimensions
    • Greenstar 12i System
      • Controls
      • Internal view
      • Accessories
      • Watch a video about condensing boilers
      • Customer testimonials
      • Technical bulletins
      • Optional plug-in controls
      • CondenseSure auxiliary siphon
      • Pipework connections and casing dimensions
  • Boiler controls
    • Find a user guide
    • Which controls go with my boiler?
    • A guide to Worcester's boiler controls
    • How boiler controls could help with fuel bills
    • Enquire about boiler controls
    • Current controls
  • Greenstore twin-coil cylinders
  • Find a boiler
  • Which type of boiler do I need?
  • What is a condensing boiler?
  • What is a combi boiler?
  • What is a regular boiler?
  • What is a system boiler?
  • Real life product installations
    • Air source heat pumps
  • Greenstar equivalents to old Worcester boilers
  • Why choose Worcester?
  • Gas Safe Register and OFTEC
  • Spares information
  • Spare parts CD
  • Commercial and industrial heating
• Solar water heating
  • Greenskies Solar-Lux 12
    • Roof mounting options
    • Sizing, installation and commissioning
    • Pump stations and controls
    • Accessories
    • Technical bulletins
    • Greenstore TC cylinder series
    • Watch a video about Greenskies solar water heating
    • Greenskies Solar-Lux panel internal view
    • Greenskies Solar-Lux panel installation guide
    • Solar-Lux 12 standard roof kits
    • Solar-Lux plumb kits
    • Customer testimonials
  • Greenskies Solar-Lux 6
    • Roof mounting options
    • Sizing, installation and commissioning
    • Pump stations and controls
    • Accessories
    • Technical bulletins
    • Greenstore TC cylinder series
    • Watch a video about Greenskies solar water heating
    • Greenskies Solar-Lux panel internal view
    • Greenskies Solar-Lux panel installation guide
    • Solar-Lux 6 standard roof kits
    • Solar-Lux plumb kits
    • Customer testimonials
  • Greenskies Solar-Lifestyle (portrait)
    • Technical bulletins
    • Greenskies Solar-Lifestyle internal view
    • Greenskies Solar-Lifestyle installation guide
    • Solar-Lifestyle (portrait) standard roof kits
    • Solar-Lifestyle plumb kits
    • Pump stations and controls
    • Accessories
    • Customer testimonials
  • Greenskies Solar-Lifestyle (landscape)
    • Greenskies Solar-Lifestyle internal view
    • Greenskies Solar-Lifestyle installation guide
    • Accessories
    • Greenstore TC cylinder series
    • Pump stations and controls
    • Greenskies solar thermal panel installation options
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    • Accessories
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    • Accessories
    • Greenstore TC cylinder series
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  • Greenskies solar thermal selector
    • Results
    • Solar heater details
  • Are solar water heating panels cost effective?
  • How do solar water heating panels work?
  • Funding for solar water heating
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  • Real life product installations
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  • Ground source heat pumps
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      • Accessories
      • How a ground source heat pump works
      • Performance
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      • Greenstore cylinder
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      • Accessories
      • How a ground source heat pump works
      • Performance
      • Heat pump controls
      • Internal view
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      • Greenstore cylinder
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      • Groundwork
      • Collectors
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    • Greenstore 9 System
      • Accessories
      • How a ground source heat pump works
      • Performance
      • Heat pump controls
      • Internal view
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      • Greenstore cylinder
      • Technical bulletins
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      • Groundwork
      • Collectors
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      • Heat transfer fluid & refrigerants
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    • Greenstore 11 System
      • Accessories
      • Internal view
      • Heat pump controls
      • How a ground source heat pump works
      • Pipework connections and casing dimensions
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      • Siting of appliance
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      • Watch a ground source heat pump installation
      • Customer testimonials
      • Greenstore cylinder
      • Technical bulletins
      • Performance
      • Installation requirements
      • Groundwork
      • Collectors
      • Heat transfer fluid & refrigerants
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    • Greenstore 6 Combi
      • Accessories
      • How a ground source heat pump works
      • Performance
      • Heat pump controls
      • Internal view
      • Siting of appliance
      • Watch a ground source heat pump installation
      • Customer testimonials
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      • Groundwork
      • Collectors
      • Heat pump sizing
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      • Heat transfer fluid & refrigerants
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    • Greenstore 7 Combi
      • Accessories
      • How a ground source heat pump works
      • Performance
      • Heat pump controls
      • Internal view
      • Siting of appliance
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      • Customer testimonials
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      • Pipework connections and casing dimensions
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      • Groundwork
      • Collectors
      • Heat pump sizing
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      • Heat transfer fluid & refrigerants
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    • Greenstore 9 Combi
      • Accessories
      • How a ground source heat pump works
      • Performance
      • Heat pump controls
      • Internal view
      • Siting of appliance
      • Watch a ground source heat pump installation
      • Customer testimonials
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      • Pipework connections and casing dimensions
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      • Groundwork
      • Collectors
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      • Heat transfer fluid & refrigerants
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    • Greenstore 11 Combi
      • Accessories
      • How a ground source heat pump works
      • Performance
      • Heat pump controls
      • Internal view
      • Siting of appliance
      • Watch a ground source heat pump installation
      • Customer testimonials
      • Technical bulletins
      • Pipework connections and casing dimensions
      • System layout
      • Groundwork
      • Collectors
      • Heat pump sizing
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      • Heat transfer fluid & refrigerants
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    • Greenstore LECP ground source heat pumps
      • Accessories
  • Air to water heat pumps
    • Greensource Air to Water Heat Pump 6kW
      • Accessories
      • Air to water heat pump heat distribution
      • How an air to water heat pump works
      • Performance
      • Operation of the heat pump and heating and hot water distribution unit
      • Air to water heat pump controls
      • Internal view of heat pump units
      • Noise levels
      • Customer testimonials
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      • See air to water heat pump installations
      • Heat pump sizing
      • Air to water heat pump care
      • Air to water heat pump package
      • Technical data table for indoor hot water distribution unit
      • Siting of the outdoor unit
      • Outdoor unit casing dimensions and pipework connections
      • Siting of the heating and hot water distribution unit
      • Heating and hot water distribution unit pipework connections
      • System design requirements
    • Greensource Air to Water Heat Pump 7kW
      • Accessories
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      • How an air to water heat pump works
      • Performance
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      • Noise levels
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      • See air to water heat pump installations
      • Heat pump sizing
      • Air to water heat pump care
      • Air to water heat pump package
      • Technical data table for indoor hot water distribution unit
      • Siting of the outdoor unit
      • Outdoor unit casing dimensions and pipework connections
      • Siting of the heating and hot water distribution unit
      • Heating and hot water distribution unit pipework connections
      • System design requirements
    • Greensource Air to Water Heat Pump 9.5kW
      • Accessories
      • Air to water heat pump heat distribution
      • How an air to water heat pump works
      • Performance
      • Operation of the heat pump and heating and hot water distribution unit
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      • Noise levels
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      • Technical bulletins
      • See air to water heat pump installations
      • Heat pump sizing
      • Air to water heat pump care
      • Air to water heat pump package
      • Technical data table for indoor hot water distribution unit
      • Siting of the outdoor unit
      • Outdoor unit casing dimensions and pipework connections
      • Siting of the heating and hot water distribution unit
      • Heating and hot water distribution unit pipework connections
      • System design requirements
  • Air to air heat pump
    • Step by step installation of an air source heat pump
    • Siting of the indoor unit
    • Outdoor unit casing dimensions
    • Siting of the outdoor unit
    • System design requirements
    • Connecting the outdoor and indoor units
  • Split Air to Water Heat Pumps
    • Greensource Split HP Hydrolight
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  • Are Greenstore ground source heat pumps right for my property?
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• Underfloor heating
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  • GB162 cascades
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    • Quick and simple cascade installation
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  • Greenspring CWi47 water heater
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    • Condensate pipework - external connections
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  • Greenspring CWi47 Cascades
    • Accessories
    • Accessories
    • Horizontal & Vertical flue accessories
    • Casing dimensions
    • Condensate pipework - external connections
    • Condensate pipework - internal connections
    • Control panel
    • Horizontal fluing options
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    • Pipework connections
    • System layouts
    • Vertical fluing options
  • Greenstar HDU
    • Accessories
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  • Greenstore single coil cylinders
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• Literature
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  • Worcester's magazine - The Installer's Choice
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  • Gas boiler literature
    • Greenstar 42CDi Classic literature
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  • Oil-fired boiler literature
    • Greenstar Heatslave 25/32 literature
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      • Pipework connections and casing dimensions
    • Greenstar Camray External 18/25 literature
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    • Greenstar Camray External 12/18 literature
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    • Greenstar Utility 50/70 literature
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    • Greenstar Camray System 25/32 literature
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  • Boiler controls literature
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      • Technical bulletins
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  • Ground source heat pump literature
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      • Indoor unit casing dimensions
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      • Installation accessories
    • Greensource Air to Water Heat Pump 7kW literature
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    • Greenfloor underfloor heating literature
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    • GB162 65kW literature
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  • Instantaneous water heater literature
  • Discontinued product literature
    • Discontinued gas boiler literature
      • 230 (discontinued December 1997) literature
      • Greenstar 40CDi (discontinued April 2007) literature
      • Greenstar 35CDi (discontinued April 2007) literature
      • Greenstar 30CDi (04/2005 - 03/2007) literature
      • Greenstar 25CDi (discontinued April 2007) literature
      • 240 BF (discontinued December 1997) literature
      • Greenstar 42CDi (manufactured April 2007 - July 2012) literature
      • 240 OF (discontinued December 1997) literature
      • Greenstar 37CDi (manufactured April 2007 - July 2012) literature
      • 240 RSF (discontinued December 1997) literature
      • Greenstar 30CDi (manufactured April 2007 - July 2012) literature
      • 280 RSF (discontinued February 1997) literature
      • Greenstar 27CDi (manufactured April 2007 - July 2012) literature
      • 350 RSF (discontinued July 1998) literature
      • Greenstar 30 HE Combi (discontinued August 2003) literature
      • Highflow 400 BF (discontinued February 2002) literature
      • Greenstar 25 HE Combi (discontinued August 2003) literature
      • Highflow 400 OF (discontinued February 2002) literature
      • Greenstar 40 HE Plus Combi (discontinued) literature
      • Highflow 400 RSF (discontinued February 2002) literature
      • Greenstar 35 HE Plus Combi (discontinued August 2003) literature
      • Greenstar 30 HE Plus Combi (discontinued August 2003) literature
      • Greenstar Ri 12, 15, 18 & 24 (discontinued Jan 11) literature
      • Greenstar i System 12, 15, 18 & 24 (discontinued Jan 11) literature
      • Greenstar 28 HE System (discontinued August 2003) literature
      • Greenstar 29 HE Conventional (discontinued August 2003) literature
      • Greenstar 40 HE Conventional literature
      • Greenstar Highflow 440 (discontinued October 2008) literature
      • 24i (discontinued November 2004) literature
      • 28i (discontinued November 2005) literature
      • 24Si II (discontinued June 2007) literature
      • 25Si (old model: October 2001 - March 2002) literature
      • 28Si (February 2000 - March 2002) literature
      • 28Si II (discontinued June 2007) literature
      • 24i Junior RSF (discontinued Aug 2007) literature
      • 28i Junior RSF (discontinued Aug 2007) literature
      • 24CDi BF (discontinued March 2005) literature
      • 24CDi OF (discontinued March 2005) literature
      • Greenstar 40CDi Regular (manufactured April 05 - Nov 2012) literature
      • 24CDi RSF (discontinued June 2007) literature
      • Greenstar 30CDi Regular (manufactured April 05 - Nov 2012) literature
      • 26CDi Xtra RSF (discontinued June 2007) literature
      • 28CDi RSF (discontinued June 2007) literature
      • 35CDi (discontinued October 2001) literature
      • 35CDi II RSF (discontinued Aug 2007) literature
      • 14/19 CBi (discontinued December 2006) literature
      • 19/24 CBi (discontinued December 2006) literature
      • 9/14 CBi (discontinued December 2006) literature
      • 15SBi RSF (discontinued January 2007) literature
      • 24SBi RSF (discontinued January 2007) literature
      • Greenstar 30CDi System (manufactured April 05 - Nov 2012) literature
      • Highflow 400 Electronic BF (discontinued March 2005) literature
      • Highflow 400 Electronic OF (discontinued March 2005) literature
      • Highflow 400 Electronic RSF (discontinued March 2006) literature
    • Discontinued oil-fired boiler literature
      • Danesmoor Kitchen CF 32/50 (discontinued December 2001) literature
      • Danesmoor Kitchen CF 50/70 (discontinued January 1998) literature
      • Heatslave CF 12/14 Combi (discontinued December 2007) literature
      • Heatslave CF 15/19 Combi (discontinued December 2007) literature
      • Heatslave CF 20/25 Combi (discontinued December 2007) literature
      • Heatslave CF 26/32 Combi (discontinued December 2007) literature
      • Heatslave RS 12/14 Combi (discontinued December 2007) literature
      • Heatslave RS 20/25 Combi (discontinued May 2011) literature
      • Heatslave RS 15/19 Combi (discontinued May 2011) literature
      • Heatslave RS 26/32 Combi (discontinued May 2011) literature
      • Camray 5 Combi 70 (discontinued December 2007) literature
      • Camray 5 Combi 55 (discontinued December 2007) literature
      • Camray 5 External Combi 90 (discontinued December 2007) literature
      • Danesmoor FS 12/18 (discontinued December 2007) literature
      • Danesmoor FS 18/25 (discontinued December 2007) literature
      • Danesmoor WM 12/19 (discontinued December 2007) literature
      • Camray 5 50/70 Internal WM (discontinued December 2007) literature
      • Camray 5 50/70 External WM (discontinued December 2007) literature
      • Danesmoor Kitchen CF 12/14 (discontinued December 2007) literature
      • Danesmoor Kitchen CF 15/19 (discontinued December 2007) literature
      • Danesmoor Kitchen CF 20/25 (discontinued December 2007) literature
      • Danesmoor Kitchen CF 26/32 (discontinued December 2007) literature
      • Danesmoor Kitchen RS 12/14 (discontinued December 2007) literature
      • Danesmoor Kitchen RS 15/19 (discontinued December 2007) literature
      • Danesmoor Kitchen RS 20/25 (discontinued December 2007) literature
      • Danesmoor Kitchen RS 26/32 (discontinued December 2007) literature
      • Camray 5 Utility 65/90 Regular (discontinued September 2010) literature
      • Camray 5 Utility 95/130 Regular (discontinued September 2010) literature
      • Camray 5 External 40/65 (discontinued December 2007) literature
      • Camray 5 External 65/90 (discontinued December 2007) literature
      • Camray 5 40/65 System (discontinued December 2007) literature
      • Camray 5 65/90 System (discontinued December 2007) literature
      • Camray 5 95/130 System (discontinued December 2007) literature
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      • Danesmoor System CF 12/14 (discontinued December 2007) literature
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      • Greenstar II HE 12/22 RS (discontinued December 2007) literature
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      • Camray 5 Utility 40/65 Regular (discontinued September 2010) literature
      • Greenstar Utility 18/25 literature
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    • Discontinued water heater literature
      • W 125 FL literature
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    • Discontinued solar water heating
      • Greenskies FKC-1S literature
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      • Greenskies FKT-1W literature
    • Discontinued heat pump literature
      • Greenstore 6 System literature
      • Greenstore 11 Combi literature
      • Greenstore 9 Combi literature
      • Greenstore 7 Combi literature
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  • Technical Bulletins
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  • FAQs
    • Home heating questions
      • Common winter boiler enquiries
      • Do you recommend treatment of the central heating water?
      • Do Worcester products suit underfloor heating?
      • What ventilation do I need?
      • Should I consider off-peak electricity tariffs?
      • How do i bleed a radiator?
    • General boiler questions
      • What is a condensing boiler?
      • What size boiler do I need?
      • Common winter boiler enquiries
      • What sort of shower should I run off a combi boiler?
      • Should my heating system be cleansed when fitting a new boiler?
      • Can I fit a boiler in a bathroom?
      • Should I fit a water softener to my boiler?
      • Will I receive anything in writing when I have a new boiler installed?
      • Why is the hot water produced by my combi boiler sometimes cloudy?
      • How could mains water pressure affect my boiler?
      • How does part L of the Building Regulations affect my boiler installation?
      • What is pluming?
    • Boiler repressurisation
      • The heating system's pressure is low, how do I re-fill the system?
      • How do I use an external filling hose?
      • How do I repressurise my combi boiler with an internal filling key ?
      • How do I repressurise my standard efficiency CDi combi boiler with an internal filling key?
      • How do I repressurise my Greenstar Highflow boiler?
    • Gas boiler questions
      • Common winter boiler enquiries
      • What does the 'SE', 'D5' code or slow flashing blue light mean on my Greenstar CDi?
      • What do the two flashing circles in the display mean?
      • Does the Greenstar Plume Diverter kit fit onto the non-telescopic condensing flue?
      • How can I locate crossed pipework on my newly installed Greenstar boiler?
      • Does an external condensate pipe have to be insulated?
      • How do I size the gas pipework?
      • How should a condensate pipe be installed?
    • Oil-fired boiler questions
      • The oil tank is filled but there is some air in the pump how do I bleed it?
      • What size oil supply pipe does an oil boiler need?
      • Can my boiler burn 35 second Red Diesel fuel?
      • Can a Greenstar oil boiler be used with the existing conventional flue?
      • What is the maximum height that the oil pump in the Heatslave and Danesmoor can lift the oil?
      • Can I use plastic pipework on oil fired sealed central heating systems?
      • Can my boiler burn Bio-Diesel?
      • My new Greenstar oil boiler's flue overheat thermostat keeps tripping out
      • How do I convert my oil pump from a single pipe system to a double pipe system?
      • How should a condensate pipe be installed?
    • Heating controls
      • What are timers, programmers and programmable room thermostats?
      • What does an optimiser do?
      • How do I adjust my boiler controls when the clocks change?
      • Will the timer remember my settings if I have a power cut?
      • Will a radio frequency timer work if I have other wireless equipment?
      • Why might I want to programme hot water times with my combi boiler?
      • Which controls can I use for the system boilers?
      • Which controls can I use for the Greenstar Ri or conventional boilers?
      • On the MT10 RF which are the day and night time settings for temperature controls?
      • How long on average do the batteries last on a Digistat?
      • Does the timer have a back light?
      • Are outside temperature sensors available for boilers?
      • What is a thermostatic radiator valve (TRV)?
    • Solar panel questions
      • How does solar technology work?
      • Will solar heating work if it's a cloudy day?
      • Do I still need a boiler with solar water heating?
      • Do I need to have a particular type of roof for solar installation?
      • Do I have to pay VAT for installing solar panels?
    • Air source heat pump questions
      • What is an air source heat pump?
      • How does a heat pump work?
      • How efficient are air source heat pumps?
      • How do air source heat pumps work?
      • How is the efficiency of an air source heat pump measured?
      • Is there any government funding available for air source heat pumps?
      • What benefits do air to water heat pumps offer over ground source?
      • What warranty is available?
      • In which type of properties can heat pumps be installed?
      • Will heat pumps work on the coldest winter day?
      • Can heat pumps heat swimming pools?
      • What planning requirements should be considered?
      • What maintenance does a Greensource air to water heat pump require?
      • What maintenance does a Greensource air to air heat pump require?
    • Ground source heat pumps questions
      • What is a ground source heat pump?
      • How does a heat pump work?
      • What is CoP?
      • What types of heat pump are available?
      • Will I also need a boiler with the Greenstore system?
      • In which type of properties can heat pumps be installed?
      • Can I keep my existing radiators?
      • Can heat pumps heat swimming pools?
      • How much loop will I need in the ground?
      • Will heat pumps work on the coldest winter day?
      • Can a heat pump system integrate with solar panels?
      • Will a trench system affect my lawn?
      • What is a trench system?
      • What maintenance and servicing is required for heat pumps?
      • What planning requirements should be considered?
      • What should I do before I order a ground source heat pump?
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