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Espar / Eberspacher Hydronic II B5S Economy 12v PETROL Heater

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Eberspacher / Espar Hydronic II B5S Economy 12v Petrol Water / 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 B5S can be fitted in any type of car (petrol).

This is the second generation Hydronic heater. 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. 

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.


Eberspacher Hydronic II B5S Economy 12v

Voltage: 12 Volts

Fuel type: Petrol

Part number: 201904050000 , 20.1904.05.0000 , 20.1904.05.00.00

Petrol Version

Hydronic 2 economy B5S



Control / Heat Settings




Heat Output (Watt)




Fuel Consumption (l/h)




Electrical Power Consumption (watt)




Delivery Rate (l/h)

680 l/h

Delivery Pressure Difference

0.1 bar



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



1 Review Hide Reviews Show Reviews

  • 5
    great product

    Posted by adrian on 17th Apr 2018

    after searching entire market in USA got this one in UK , fast delivery, perfect functionality