Espar's HYDRONIC coolant heaters

Espar's coolant heaters work independently of the engine and thus offer a double plus: pre-heating the vehicle's passenger compartment and the engine.

The heaters are integrated in the cooling system of the engine. The thermal energy gained is then distributed through the vehicle's own heat exchanger as forced hot air and this heats the interior of the vehicle via existing air vents. The engine is warmed up with the residual heat in the cooling water.

Practical controls - such as a digital Espar timer or key fobs - make for ideal and pre-heated engines and compartment space.

Application:

BUS - Pre-Heaters for Buses
Suitable Units:
HYDRONIC 5: Engine preheat only
HYDRONIC 10: Preheat and supplemental heat for small to large buses
HYDRONIC 24: Quicker preheat in extreme cold climates
A pre-heated bus, a clear view for the driver and passengers right from the start, warmth also at the rest stop and in traffic jams are strong arguments for the powerful water heaters from Espar.

TRUCK - Cab Comfort and Engine Preheating
Suitable Units: HYDRONIC 5, HYDRONIC 10
Espar Heater Systems manufactures diesel-fired heating systems to provide cab and sleeper heat in trucks, eliminating the need to idle the engine for heat. Espar also supplies independent coolant systems for quick engine pre-heating. These systems require no electrical plug-ins and are ideal for cold weather starting.

OFF-HIGHWAY EQUIPMENT - Preheaters for Building Machines and Agricultural Vehicles
Suitable Units -
HYDRONIC 5: < 2,000 LBS / < 700 in cubed
HYDRONIC 10: 2,000 - 5,000 LBS / 700 - 1,500 in cubed
HYDRONIC 35: 5,000 - 15,000 LBS / 1,500 - 3,000 in cubed
Espar Off-Highway Equipment Heaters can provide engine preheat, cab comfort and windshield defrost. We offer two basic types for building machines and agricultural vehicles: air heaters and water heaters. Both systems satisfy the highest demands on sturdiness and cost
effectiveness.

HYDRONIC 4 - (12 Volt Gasoline or Diesel)
Small Large
Heat Flow 8,200 btu/hr 14,700 btu/hr
Air Flow Rate cfm cfm
Fuel Consump. 0.07 gal/hr 0.16 gal/hr
Mean Elect Op. 1.9 amps 4 amps

HYDRONIC 5 - (12 Volt Gasoline or Diesel / 24 Volt)
Small Large
Heat Flow 8,200 btu/hr 17,100 btu/hr
Air Flow Rate cfm cfm
Fuel Cons. (12V - dsl) 0.07 gal/hr 0.16 gal/hr
Fuel Cons. (12V - gas) 0.07 gal/hr 0.16 gal/hr
Fuel Cons. (24V - dsl) 0.07 gal/hr 0.16 gal/hr
Mean Elect Op. 1.9 amps 4 amps

HYDRONIC 10 - (12 or 24 Volt)
Small Medium Large Power
Heat Flow (btu/hr) 5,118 10,918 24,570 32,414
Air Flow Rate cfm cfm cfm cfm
Fuel Consp (gal/hr) 0.039 0.088 0.198 0.264
Mean Elec (amps) 2.9 4.0 6.6 10.4

HYDRONIC 16 - (24 Volt)
Large
Heat Flow 54,630 btu/hr
Air Flow Rate 0 CFM
Fuel Consumption 0.48 gal/hr
Mean Elec Power 2.1 amps

HYDRONIC 24 - (24 Volt)
Large
Heat Flow 82,000 btu/hr
Air Flow Rate 0 CFM
Fuel Consumption 0.61 gal/hr
Mean Elec Power 3.33 amps

HYDRONIC 30 - (24 Volt)
Large
Heat Flow 102,000 btu/hr
Air Flow Rate 0 CFM
Fuel Consumption 0.76 gal/hr
Mean Elec Power 3.95 amps

HYDRONIC 35 - (24 Volt)
Large
Heat Flow 120,000 btu/hr
Air Flow Rate 0 CFM
Fuel Consumption 0.88 gal/hr
Mean Elec Power 5 amps