Sign up now to stay updated on the latest news and offers! The scheme offer’s boiler serving and priority call outs and can even cover you for parts and labour on repairs as well. We also work with estate agents like savills so give yourself peace of mind before you put down that deposit! Installed a tankless water heater followed through with everything they said. Q how much will a replacement boiler cost? This device does not replace the equitherm controller atmos acd or functions.