The
Heaters for Oilfield Applications
- Eliminate Winter Idling
- Versatile fluid pre-heating
- Cab, workspace and engine heating
- Automatic altitude adjustment
- Packaged for oilfield applications
- Minimize disel exhaust emission
- Rugged, contact
- CARB approved / EPA verified
Different Configurations for Different Applications
Espar Air and Coolant heaters can be customized to suit your specific needs. Espar Coolant heaters are boxed for protection and offer amp management solutions utilizing our auto-shut off switch. Espar Air heaters have output ranges capable of providing heat for everything from Haul Trucks to Computer Trailers. With Espar heaters you can be assured of equipment reliability – whether it’s a large Deck Engine or small non-mobile equipment such as Heat Units, Generators and Welders.

Air Heaters
AIRTRONIC D2 and D5 Series
AIRTRONIC units range from 2 kW / 7,500 BTU’s to 5 kW / 18,800 BTU’s and are available with our Digi-controller, which has an internal ambient air temperature sensor for precise compartment heating. An 8 kW / 28,000 BTU unit is available for cargo heating.
Coolant Heaters
HYDRONIC MI & L Series
HYDRONIC units range from 12 kW / 42,000 BTU’s up to 35 kW / 120,000 BTU’s and are available in boxed configurations. The M-Series units have automatic altitude adjustment and six operating speeds for lower amp draw. Both come in 12 or 24 volt and have spark arrestor and control options available.
All models are compact for installation in a variety of mounting locations.
Control Options
- Indicates on-board diagnostics capability
- 7 Day Timers*
- Programmable Timer
- Push/Pull Switch
- Thermostat*
- Auto Shut-Off Switch
- Digi-Controller

Easy to Operate
Espar heaters operate as miniature furnaces independent of the engine, utilizing the units own diesel fuel and batteries to produce heat.
Efficient
Hydronic units heat the coolant, then circulate it to warm the engine and heat exchangers to near operating temp and can be sized to provide auxiliary heat for other critical fluids. Espar air heaters heat air directly and circulate air to applicable compartments.
E-Work HYDRONIC air heaters can provide ample heat to the cab, mobile work stations, crew shelters, all without idling the engine.
Productive
Using timer controls, heaters can be switched on to begin engine pre-heating at preset intervals, allowing operators to go directly to work upon arrival.
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