A district heating heater is utilized to heat water for district heating in combined heat and power plants, which concurrently provide electricity and warm water to modern large apartment complexes or small district heating systems utilizing waste heat from city waste incinerators. While its structure and heating method mirror those of the feedwater heater, it is specifically designed for this application and thus referred to as a DH heater. This heater comes in two variations: the single-zone type and the two-zone type low-pressure (LP) heater.

ENERGYEN is equipped to perform basic and detailed design and manufacture the LP&HP feedwater heaters in compliance with international codes such as ASME, HEI, TEMA, METI, etc.