DR-RS Room sealed water heater

Room sealed commercial water heater ranges

Room sealed water heaters are suited to applications where a conventional flue is impractical, or where the heater needs to be located closer to point of use.

Hamworthy room sealed water heaters are available with either vertical or horizontal flue arrangements using twin duct, concentric flue systems or single pipe arrangements.

With the Dorchekster DR-FC Evo, twin duct flue systems can extend to 100m overall length, whilst concentric flues can run up to an impressive 40m in length, meaning, our room sealed water heaters can be sited almost anywhere in the building.

Room sealed configurations reduce the volume of ventilation air required, resulting in tighter, and more energy efficient buildings. Open flue applications using DR-FC Evo water heaters provide solutions where balanced flue terminals are unsuitable, or where existing flue routes are to be retained.


Room sealed water heaters:

  • DR-FC Evo – Room sealed water heater 596-2333 litres/hour
  • DR-RS – Room sealed water heater 517 to 1965 litres/hour


Hamworthy also offer the Dorchester DR-TC water heater, with integrated condensing gas burner and the addition of dedicated solar coil for use with a solar circuit.

The Dorchester direct water heater range also consists of atmospheric , condensing, non condensing and solar integrated models, suitable for use with natural gas, LPG or oil fuels. All are complimented by a range of indirect calorifiers and storage tanks to suit your commercial water heater project, and the Hamworthy Trigon solar can be used as a package to achieve a fully integrated solar solution.


Make the right choice, talk to Hamworthy.

View full commercial water heater range.