For the best stoves at the best prices, take a look at the fantastic variety of products which we have on offer. We take pride in offering only the most high quality, reliable and stylish multi fuel, boiler, inset stoves from some of the most reputable brands around, so take a look at our amazing range today. A back boiler is a device which is fitted to a residential heating stove or open fireplace to enable it to provide both room heat and domestic hot water or central heating. The device is a water filled heat exchanger enclosed at the rear of the burning chamber with a hot water output at the top of the chamber and a cold water feed at the bottom.