We understand that choosing a new boiler is a big decision our new boiler replacement tool is designed to help you find the right boiler best suited for you and your home. The advance range comes with a 5 year warranty including parts and labour. Sandy's plumbing are a small family run company in aylesbury specialising in blocked drains, burst pipes. We call it our fixed price quote. Most modern combi boilers have been built with space as a major consideration most.