Copyright 2014 | intergroup architects | all rights reserved. Many people ask us what a combi boiler does and if it saves money. Investing in a solar water heater might be a sound investment considering where we live hawaii is sunny the weather is typically warm and welcoming that’s why so many tourists…. A new gas boiler can give you a warm, comfortable home and save you £100’s on your gas bill but you probably have some questions. The baxi luna boiler system is a powerful, instantaneous,.