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Core Features & Benefits
Effortless engine starting, fuel savings, and environmental protection.
Cozy cabin environment in the coldest weather.
Suitable for a wide range of car models.
Easy-to-use and smart heating control options.
Hydronic Engine Preheater for Faster Cold Starts & Cabin Comfort
Warm your engine and cabin efficiently with this compact Espar hydronic heater. The Hydronic 2 D5S delivers steady 17,000 BTU (5 kW) diesel heating and pairs with the EasyStart Timer for precise schedules and diagnostics - perfect for winter reliability and off-grid use. This second-generation heater still works with a high altitude kit, to increase capabilities to operate in higher altitudes, where other models might be struggling to operate
Benefits & Use Cases - Eberspacher Coolant Heater
Cut idling, reduce engine wear, and enjoy quiet hydronic warmth. Ideal as an Eberspacher engine heater for cold-start protection in passenger vehicles and commercial fleets, and as a compact boiler for RV water/air heat exchangers.
Engine-off preheating for faster starts and lower emissions.
Stable coolant loop heat for fan-coil or heat-exchanger cabin heating.
EasyStart controller adds timer programs and service prompts.
Efficient diesel operation for long runtime with minimal fuel use.
Vehicle Compatibility
Cab and engine heater
Passenger cars (from 2.0 L displacement)
Emergency vehicles
Vans, large taxis, minivans
Commercial vehicles (incl. tandem configs with air heaters)
Espar Hydronic II D5S Diesel 12V OES Heater with installation kit and Timer
Worth it
A great little runner with blower unit. Got independent air heating with Kalori Kuba and water plates. Using my own plates. 24 plate exchanger works like a treat. No more army showers!
Posted by Dylan B on 9th Sep 2024
Heater
Great it just what I needed
Posted by Dennis on 9th Sep 2024
Need heat
It was good fast delivery fit perfectly they were very helpfull
Posted by Dennis Sloan on 6th Jan 2020
Heater
Great it just what I needed
Posted by Dennis on 10th Dec 2019
Worth it
A great little runner with blower unit. Got independent air heating with Kalori Kuba and water plates. Using my own plates. 24 plate exchanger works like a treat. No more army showers!
