Fitting a GasSaver 'top box' to our boilers is a simple way of taking energy efficiency to a higher level.
Positioned neatly above the boiler, this compact unit extracts heat from waste gases that are normally expelled into the atmosphere through the boiler flue. This is then used to preheat cold mains water before entering the boiler.
As the boiler is heating warmed water rather than cold, an average 35% less gas is used to produce hot water, reducing your energy bills and saving up to half a ton of carbon per year.