Hot Water Heaters

California Boiler offers an extensive range of hot water heaters designed for a variety of applications.

For commercial or light industrial businesses, California Boiler offers an extensive range of hot water heaters designed for a variety of applications. Our quality products from leading manufacturers enable production of process, domestic and hydronic water.

American Heating Company

Helical Coil Hot Water Heaters

American Heating Company carries a full line of Helical Coil Hot Water heaters that can be sized to accommodate heater duties from 0.5 MM BTU/Hr. to 100 MM BTU/Hr.

Diversified Heat Transfer Inc.

SP Series: Indirect Water Heater

The packaged systems utilize simple, real-time load tracking and responsive controls to maintain accurate hot water temperature under various load patterns.

SS Series: Unfired Steam Generator

The SS Series of Unfired Steam Generators (USG) from DHT provide engineers and facility professionals with superior performance in commercial and institutional applications.

ST Series: Semi-Instantaneous (Steam-to-Water) Water Heaters

The DHT ST Series of semi-instantaneous water heaters are the engineered solutions for engineers and facility owners/managers who need high recovery capacity in a small space.

STP Series: Water Heater

The DHT STP Series is a fully packaged storage water heater that utilizes a double-wall brazed plate heat exchanger to optimum heat transfer by generating more efficient and faster hot water replenishment of the storage tank.

Kemco Systems

Direct Contact Water Heater (pdf)

Direct Contact Water Heaters



Commercial-Sized Water Heating System


Direct Contact Water Heating System



Domestic Hot Water Heaters & Boilers


Condensing, modulating, hot water supply, pool, and hydronic heating boilers.

Futera II

Low NOx, high efficiency, hot water supply and hydronic heating boilers.

Futera III

Full modulation, high efficiency hot water supply and hydronic heating boilers

LCD Dominator

Indoor/outdoor, hot water heaters and hydronic heating boilers


Efficient Power, Sized to Your Vision

Storage Tanks

Vertical glass lined jacketed and insulated or bare asme

boiler service

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Our complete line of boiler room equipment includes a wide range of boilers, burners, hot water heaters, feedwater systems, blowdown systems, fuel efficient equipment, control systems, oil heaters, and stack systems.

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boiler rentals

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We maintain a fleet of self-contained skid-mounted rental boilers that we can deliver to your location! Learn More