Gas fired condensing water heaters & calorifiers
We have one of the largest range of commercial water heaters and calorifiers on the market.
Whether you prefer to separate your commercial heating and hot water systems or couple a calorifier with a heating boiler, we have the solution. With over 35 different direct fired water heaters including condensing water heaters and gas water heaters, plus calorifiers and storage tanks, you can choose a commercial water heater that accurately matches your building’s requirements. Want to know the difference between Indirect vs Direct Hot Water Systems?
View our full range of direct fired water heaters and indirect water heating products below.
Dorchester DR-FC Evo condensing water heater
Condensing water heater with large continuous outputs and advanced controls.
Dorchester DR-LL atmospheric water heater
Atmospheric direct fired low NOx water heater for domestic hot water.
Dorchester DR-TC solar water heater
Hybrid water heater combining solar energy with a condensing gas burner.
Dorchester DR-XP stainless steel condensing water heater
Fully automatic, condensing direct fired water heater with stainless steel tank
Halstock stainless steel calorifier
Stainless steel calorifier for indirectly heated hot water storage.