Find a boiler
Upgrading your heating system can be a big decision and it helps to know you're talking to the right people. Click through to see the different types of Greenstar boilers and controls suitable for your home.
You can phone our customer helpline 0330 123 3366 or go directly to one of the heating experts in your local area. A home visit can easily be arranged and a free no obligation quote provided to help you make your decision. It is essential that you consult your Gas Safe registered installer or engineer to help advise on your heating system needs. Every household is different, so it's important to find out as much as you can before choosing the right boiler.
Sorry, you must answer the question by clicking on an option before pressing "Next Question".
Important: This information is provided for reference only and should not be used for specification purposes. Whilst all reasonable efforts are made to ensure the accuracy and completeness of the information, Bosch Thermotechnology Ltd can accept no liability in the event of errors or omissions. We recommend that you seek the advice of a Gas Safe Registered installer for gas boilers, or, an OFTEC registered installer for oil-fired boilers, as there are numerous influencing factors which should be taken into consideration when specifying a boiler, such as age of property, location construction type etc.
A 'combi' or combination boiler is a high efficiency water heater and a central heating boiler combined (hence the name) within one compact unit. Water is heated directly from the mains eliminating the need for a hot water storage cylinder and the associated cold water storage cistern in the roof space. Because your hot water is delivered to your taps or shower at mains pressure it’s very convenient and can save on your hot water costs. As an added benefit, showers from a ‘combi’ can be comparable with the performance of a power shower.
So a 'combi' can also give you a little extra room to play with, making it ideal for a flat or a bungalow with very little or no roof space and it’s also the right choice if you want to use your loft space for a room conversion. Another ‘combi’ benefit is that it can generally save you money on installation time and costs as well installation materials.
Regular boilers – sometimes referred to as traditional or conventional boilers – are suitable for homes that already have a traditional heating and hot water system that requires a separate hot water cylinder.
Regular boilers also require a cold water storage cistern to feed the hot water cylinder and an expansion cistern in the loft. They are a good option for any home where a large volume of stored hot water is required e.g. homes with two or more bathrooms, or in areas where the water pressure is low.
Regular boilers are compatible with solar water heating systems to bring you the added benefits of environmentally friendly hot water and further cost savings.
Both a system boiler and a regular boiler work on the principle of stored hot water – but a system boiler is different in two important ways. Firstly, many of the components of the heating and hot water system are built into the boiler itself, making it quicker and easier to install. Secondly, it doesn’t need a feed and expansion cistern in the loft.
There are two kinds of cylinder which this type of system may have – a mains pressure hot water cylinder or a low pressure hot water cylinder. They are also compatible with solar water heating systems to bring you the added benefits of environmentally friendly hot water and reduced hot water and heating costs.
If you want to discuss your boiler requirements, call our customer helpline on 0330 123 3366.
Please remember to discuss the following with your local installer or engineer when they visit your home:
- Have your heating and hot water needs changed since your current boiler was fitted i.e. are there more or fewer residents using the hot water? Have you added an extension or a loft conversion?
- We recommend system flushing and treatment to ensure your heating system efficiency over time – ask for more details.
- How the different controls options can give you an even more efficient heating system and save energy and money.
- What is the impact of having a new shower installed – will it work off the existing hot water system or is it electrically powered?
- How can solar water heating or heat pump technology benefit your efficiency and carbon footprint?
- What funding schemes are available i.e. Green Deal, Eco, Renewable Heat Incentive.
|What type of boiler best suits my home||Most suitable|
|You want to use your loft space for a room conversion or other purpose.||Combi|
|You live in a flat or bungalow (i.e. have very little or no roof space)||Combi|
|Your home has more than 2 bathrooms||Regular or System|
|Your mains water pressure is low||Regular or System|
|You want to replace an old boiler to improve an existing conventional central heating system||Any|
|The number of people in your household means that there is regular demand for hot water on tap, but waiting for the tank to constantly refill and heat up is, or would be, inconvenient.||Combi|