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Webasto Thermo Top EVO 5 Diesel 12v (5.2 kW) Water Heater with Multicontroller

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Webasto Thermo Top EVO 5 Diesel 12v Heater Kit 

This is the new version that replaces Thermo Top C Heater. The Thermo Top Webasto EVO 5 diesel heater was designed for new vehicles with limited space, as it sports a compact build and efficient operation. Economical, powerful, and reliable, this heater comes with a universal installation kit and HD multicontroller.

Technical Specifications:

Fuel type: Diesel

Voltage: 12 Volts

Max Power  5.2 kW


Webasto Part Number: 1314815B / 1314815

Installation kit: 1314818D / 1314818


This Kit Includes:

  • Webasto Thermo Top Evo 5 12v Diesel Heater (includes water pump)

  • Webasto Fuel Dosing Pump

  • Plastic Fuel Supply Pipe and Fittings

  • Water Connector Pipe / Hose with 180deg Bends

  • Stainless Steel Exhaust

  • Silencer / Muffler

  • Webasto Multicontroller HD

  • Wiring Harness and Connectors

  • Combustion Air Intake Pipe

  • Fuel supply pipe and Fittings

  • Mount Bracket

  • Installation Manual and Warranty Documentation


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.

2 Reviews Hide Reviews Show Reviews

  • 5

    Posted by jonathan silwones on 2nd Oct 2021

    Great product. All inclusive kit. Maybe a bit complex for the DYI, but doable. Much better unit than old 90ST.

  • 5
    dont forget controller

    Posted by Thurston C on 27th May 2020

    Everything comes in a single box, nicely packed and secured. Done a few installations of Webasto water heaters so this was easy. Dont forget to add controller - i did