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23KW diesel heater 24V – Webasto DBW 2020/ Spheros DBW 230

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The Spheros DBW 230 / Webasto DBW 2020 coolant heater

The Spheros/Valeo DBW 230 coolant heater is identical to the world renowned Webasto DBW 2020. With 80,000 BTU of heating power, this heater is sure to keep your hydraulic equipment up and running even in the coldest environments. Powerful and efficient, the DBW 2020/230 is ideal for heating and maintaining trucks, buses, and construction vehicles.

User Benefits of the 23KW diesel heater

  • Pre-heating high-power engines improves life expectancy and readiness for operation of the engine.

  • Quickly heat up passenger areas in busses without the engine running

  • Maintain comfortable interior temperature at extreme colds on large vehicles with no/poor thermal insulation (construction machinery, large military vehicles, trucks).

  • The Spheros/Webasto 23KW diesel heater quickly and efficiently warms up large coolant cycles and hydraulic systems.

  • Maintains optimal engine operating temperatures.

  • Reduces overall fuel and maintenance costs.

Powerful and reliable coolant and hydraulic liquid heating

By utilizing cutting-edge technology, the DBW 230/2020 23KW forced flow coolant heater efficiently produces nearly 80,000 BTU of heating output. With an upgraded heat exchanger, combustion chamber, and ECU, this coolant heater can reliably and economically heat large diesel engines in sub-zero conditions. 

Spheros DBW 230 circulates coolant with an electric pump. Forced flow heaters warm the coolant and pump it through the engine block, providing uniform heat distribution. Preheating your engine using the 23KW Spheros DBW has multiple benefits: it ensures fast starts for critical applications, significantly reduces fuel consumption and engine wear, and produces less emissions. For large diesel engines working in extreme colds, preheating is simply a necessity.

This heater is efficient and long-lasting. Economical fuel consumption makes it more affordable and ecologically friendly in the long-term, while the precision design ensures that it functions smoothly and silently.

The Webasto DBW 2020/Spheros DBW 230 coolant heater is world renowned for its reliability, efficiency, and power. Installed in over 150,000 vehicles worldwide, Spheros are one of the leaders of coolant heating in the industry.

Key Features of the Spheros DBW 230

  • Includes all the necessary components for a straightforward installation.

  • Supplies 78,500 BTU of heat for preheating the engine, warming up the cabin, and potentially supplying hot water.

  • Minimal fuel and power consumption makes the DBW 230 economical, long-lasting, and ecological.

  • Advanced Diagnostic System accurately and reliably reports possible errors.

Included in the kit

  • Water pump

  • Switcher

  • Fuel filter

Spheros/Webasto DBW 230 Technical Specifications

Voltage (V)


Fuel Type


Maximum Heat Flow (BTU (KW))

78 500 BTU (23KW)

Fuel Consumption (gallon/hour (liter/hour))

0.79 gal/h (3 L/h)

Power Consumption (W)

65 W without coolant pump

Dimensions (L x W x H)

27 x 10.2  x 11 in (686 х 260 х 280 mm)

Weight (lbs (kg))

53 lbs (24 kg)


Installation, servicing and maintenance must be done in accordance with manufacturer’s guidelines. Failure to follow these guidelines will result in voiding your warranty. 

We provide free technical and installation support via email or phone to all of our customers who purchase a heater, heater kit or other products from Heatso. We take pride in our customer service and want to ensure that your heater system is properly installed. As a result, if you have any difficulties, please do not hesitate to contact us at [email protected].

If you require removing and/or refitting your item, please visit a local professional or authorised specialist, if you can not find one you can contact us and we will try to recommend a local partner to assist with the task. The cost of removing and/or refitting this item is not covered by the warranty.

Standard/Premium Warranty Terms for Espar/Eberspacher or Webasto Heaters & Heater kits

2 Years + optional 1 year extended Warranty available

If the item has failed within warrantable conditions:

  1. Please fill out the contact form on the “Contact us” page.
  2. A representative will contact you within 24 business hours to confirm the details and assist you further.
  3. If the product needs to be inspected by our service engineer, we will provide shipping labels for you to print and attach before handing over to our courier for collection.
  4. The shipping label will contain instructions for arranging pickup at your location or drop off at a nearby FedEx location. Follow these instructions to pass the package to FedEx.
    1. *The Label must be attached to the packages before leaving the package with FedEx.
    2. *You can also choose to drop off the item at a FedEx post office instead of requesting a courier collection.
    3. *If after inspection it appears that the item is not warrantable and the malfunction is caused by a non-warrantable condition, we will kindly ask you to cover shipping expenses at a discounted flat rate.
  5. On average, diagnostics of heaters and their parts takes 3 to 4 working days from the moment the item has reached our warehouse.
    1. *The diagnostics report is provided by a manufacturer approved authorised service centre.
  6. If during diagnostics it was concluded that the fault falls under non-warrantable conditions, our customer support will reach out to you and provide you with an estimated repair cost.
    1. *Please note that we strive to provide the lowest possible repair prices.
  7. Under normal circumstances it can take 3-7 working days after diagnostics to repair most minor malfunctions.
    1. *Please note that each case is unique and your repairs may take longer depending on the fault.


*Please note that all deadlines above are approximate and everything depends on the specific details of each case.

**If your item has been installed by a third party, please save all the documentation.This documentation can help find and fix the fault faster.