Boiler calculator

Use our boiler calculator to find the best boiler for your needs and your home. It's a central heating calculator, a hot water calculator and a great way to find exactly what you need. Using a domestic heating calculator like this is a good starting point if you don't know too much about boilers.

To use the boiler calculator, simply answer these quick questions about your home and lifestyle and we'll suggest a boiler that's just right. You can then compare notes with your installer and make a more informed decision.