Free shipping to USA and Canada on orders over $499

Worldwide Delivery

Free shipping to USA and Canada on orders over $499

24h-72h delivery

32KW diesel heater 24V – Webasto/Spheros Thermo E 320

(No reviews yet) Write a Review
Shipped in 24 hours
Calculated at Checkout

The Spheros Thermo E 320 coolant heater

The Spheros Thermo E series are the newest coolant heaters for large vehicles. Thermo E 320 sports an upgraded ECU for better reliability, and an improved heat exchanger for higher efficiency. Generating 110,000 BTU of heat at minimal fuel consumption, the Thermo E 320 is perfect for heating and maintaining buses, trucks, construction and military vehicles.

User Benefits of the 32KW diesel heater

  • High-power engines benefit from preheating because it makes them more efficient and ready for operation.

  • Heat the passenger areas of buses without running the engine to save fuel and energy.

  • Maintain comfortable interior temperature even in extreme conditions on large vehicles.

  • This Spheros 32KW coolant heater quickly and efficiently heats up coolant and hydraulic liquid, for smooth and comfortable operation.

Keep your systems running smoothly in the harshest conditions

A Spheros Thermo E 320 forced flow coolant heater will efficiently and effectively preheat your engine. It does so by warming up the coolant, and then circulating it through the cycle using an electric pump. This spreads the heat evenly throughout the cycle, ensuring smooth functionality of the entire system.

When working in extreme temperatures, a large diesel engine must be preheated to safely start. In addition to ensuring the engine will start, preheating reduces fuel consumption, engine wear, and emissions.

The Webasto/Spheros Thermo E 320 has a massive 110,000 BTU heat output. Thanks to an upgraded ECU, combustion chamber, and new sensors, the Thermo E 320 has minimal fuel and energy consumption. This makes it an economical, reliable, long-term solution to counter freezing climates.

The Spheros Thermo E 320 coolant heater is world renowned for its reliability, efficiency, and power. Installed in over 150,000 vehicles worldwide, Spheros heating systems are leaders in coolant heating.

Key Features of the Spheros Thermo 320

  • Includes all the necessary components for a straightforward installation, with installation instructions.

  • Supplies 110,000 BTU of heat for preheating the engine, warming up the cabin, and potentially supplying hot water.

  • Minimal fuel and power consumption makes the Thermo E 320 durable, economical, and ecological.

  • Advanced Diagnostic System accurately and reliably reports possible errors.

Included in the kit

  • Water pump

  • Switcher

  • Fuel filter

Spheros Thermo E 320 Technical Specifications

Part Number


Voltage (V)


Fuel Type


Maximum Heat Flow (BTU (KW))

109 200 BTU (32KW)

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

0.84 gal/h (3.2 L/h)

Power Consumption (W)

100 W without coolant pump

Dimensions (L x W x H)

23.3 x 9.7 x 8.8 in (593 х 247 х 224 mm)

Weight (lbs (kg))

38 lbs (19 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.