Megaflo 15 15kW System Boiler:£873.47 428 ErP LPG Combi Boiler 28kW:£1,146.06 Ecoblue Advanced 40 40kW Combi Boiler:£2,579.00 Baxi Core Services Heat-only Boilers If you have a hot water storage cylinder as well as a cold water tank in your loft, you might benefit from heat only...