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Eberspacher Hydronic II D5S 12v Coolant / Engine Heater

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Espar / Eberspacher Hydronic II D5S Economy 12v Coolant Heater

This heater has advantage of pre-heating the engine as well as the passenger compartment. It uses the car's own water system with heat exchanger and fan. Hydronic II D5S can be fitted in any type of car.

This is the second generation Hydronic heater (latest model introduced in 2014). The main differences from the older Hydronic 5 versions - improved fuel efficiency, works faster and it is more reliable than its predecessors. It also works with the new type Easysart controllers / timers / GSM System. Recommends Hydronic II D5S ! 

Hydronic Water Heaters

  • Double benefits: warming up the passenger compartment and engine and therefore making starting easy, protecting the engine, saving fuel and helping the environment.
  • Comfortable warm air distribution using the car's own air vents.
  • Installation in the engine compartment possible in almost any car.
  • Can be controller  by timer, radio remote control or smartphone.
  • Pre-cooling possible in summer.
  • Can also be used for central heating in boats (requires special marine installation kit)


Espar / Eberspacher Hydronic II D5S Economy 12v with fuel pump and water pump included

Voltage: 12 Volts

Eberspacher Part Number:

  • 252526050000
  • 25.2526.05.0000 /25.2526.05.00.00
  • 25 2526 05 0000 /25 2526 05 00 00

Technical Data:


Ideal for:
  • Preheating vehicles, trucks, semi-trucks, vans etc
  • Central heating for boats (can also be used to provide hot water through an indirect tank)

Shipping Times:

  • United States - 1 Working Day
  • United Kingdom - 1 Working Day
  • Western Europe - 2-3 Working Days
  • Eastern Europe - 3-5 Working Days
  • Scandinavian Countries - 2-3 Working Days
  • Australia / New Zealand - 2-3 Working Days
  • Rest of World - 2-4 Working Days


Warranty Included

2 Reviews Hide Reviews Show Reviews

  • 5

    Posted by Dennis on 10th Dec 2019

    Great it just what I needed

  • 5
    Worth it

    Posted by Dylan B on 19th Jun 2019

    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!