Webasto Thermo Top Evo 5kW Diesel Camper RV Air and Water 12v Heating Kit

Part Number: 4117881A
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Webasto Thermo Top EVO 12v Combination Camper Water Heater Kit

An alternative to the Eberspacher Combitronic, this Webasto water heater kit provides both warm air and domestic hot water. The heater unit is typically mounted externally on the vehicle, whilst the header tank and plate heat exchanger utilise minimal interior space.

The warm air blower unit would be mounted in the area where the heat is most required i.e. living area or cab. The two speed blower has two fans which can operate independently or together, and are controlled by a thermostat. Heating and hot water on the move is possible. The blower bypass valve (optional - please enquire) is used for hot water only in order to achieve a quick heat up time.

How does the Webasto Combination Kit work?

The Webasto heater unit is self regulating and operates in a similar way to a domestic central heating system. Once activated, the heater unit will heat the coolant via a heat exchanger using the vehicles fuel supply. The integrated water pump will circulate the coolant around the heating circuit passing through the water plate heat exchanger and blower heater, providing on demand hot domestic water and warm air.

The Webasto Thermo Top EVO Combination Heater Kit Includes

  • Webasto 12v Thermo Top Evo 5.0kW RV version Water Heater & Water Pump
  • Water connector hose
  • Stainless Steel exhaust pipe with vehicle specific exhaust silencer & fixings
  • Heater wiring harness and connectors, additional wiring is required.
  • Combustion Air Intake Pipe
  • Fuel Dosing Pump
  • Plate Heat Exchanger
  • 5m Coolant hose
  • 5Ltr Header Tank
  • Fan Matrix unit, Silencio 2, 5.5kW - for dimensions please see images
  • Dedicated 3 gang switch panel assembly
  • External heater mounting bracket


For technical information and overview please view downloads section for Thermo Top EVO

This diesel heater kit is ideal for

  • Commercial Vans and Small Buses
  • Caravans
  • RVs
  • Campervans
  • Motorhomes
  • Mobile Homes
  • Mobile Workshops
  • Welfare Units
  • Electric Vehicles
  • 4 x 4 Vehicles
  • Horse Boxes

Warranty and Support

This is a genuine Webasto UK Warranted heater. In the unlikely event of a fault arising due to manufacturer defective parts or workmanship please just return heater to Butler Technik with your original receipt, or repair parts only, you choose!

Bespoke vehicle and marine kits are available and can be built to order. Please discuss your requirements with the Butler Technik support team.


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Please Note: Delivery prices quoted are excluding VAT.

Deliveries are made from Monday to Friday excluding Bank and National Holidays.

Next Working Day Shipping* is available in UK Mainland for all orders placed before 15:00hrs. Orders placed after 15:00hrs will be dispatched the following working day on a next day service.

Orders placed on a Saturday or Sunday will be despatched the following Monday (except Bank Holidays) for expected delivery following business day (Tuesday).

For Next Business Day Delivery, please select Next Day.

Standard 2-day shipping* is available to Scottish Highlands and Islands orders placed before 15:00hrs on stocked items. Items are despatched promptly sameday. UK Courier services are typically 2 day delivery for remote UK postcodes.

WEEKEND deliveries in the UK may be possible if required at additional cost. For WEEKEND delivery quotation please call our Sales Team prior*

Standard carriage / Free-shipping - please allow 2-5 working days from clearance of payment for delivery. Typically however delivery is much quicker and 98% of orders are delivered to UK addresses within 24 - 48 hours after dispatch from warehouse.

Delivery Times - Deliveries are made Monday to Friday (excl. public holidays) typically 2-5 working days from date of order for in-stock items if the FREE DELIVERY option is chosen. An email will be sent to inform you of dispatch of goods and due delivery date. Next Day UK delivery may be selected at checkout for an additional cost.

  • Free worldwide delivery will not be available if one of the following is applicable to your order:
  • Your order has a total weight exceeding 18kgs
  • You already have a discount code applied to your order
  • Your basket contains a special order item that requires shipping additionally.

Our returns policy does not include manufacturer warrantable items. Please speak to our support department or email sales@butlertechnik.com if you believe your item has failed within warrantable circumstances, or if you wish to return an item for refund.

Refunds and Right to Cancel

You have the right to cancel your order within a 14 (fourteen) day "cooling off period", which starts the day after you receive your items. You can apply for a refund within 30 (thirty) days from the date of invoice.

Prior Notification of Intent

If you wish to cancel an order or submit a refund request under the UK Consumer Protections (Distance Selling) Regulations 2000, you must inform ButlerBus Technik Ltd of your intention to cancel or return your order by either phone, email or post within the 14 (fourteen) day cooling off period for order cancellation, or 30 (thirty) day period for refunds.

When Butlerbus Technik has received your request you will receive confirmation and given authorisation to return goods. Please quote and include your original invoice number. All goods must be in a re-saleable condition.

You will be required to return goods at your cost by an insured and trackable method. If goods go missing we will only consider a request for refund on proof of completed receipt/delivery of goods to Butler Technik from your nominated courier. Once we have received goods we will then issue you a full refund less any delivery charges.

If you are unable to arrange a return please contact us. We can arrange collection on your behalf but a charge will be made which will be deducted from your refund total.

If a delivery charge was made on the original purchase this will not be refunded as this is a service which is concluded at the point of order.

Orders that have already been processed and/or dispatched cannot be cancelled; they must be returned to ButlerBus Technik Ltd for refund following receipt of goods by customer.

We will do our very best to assist and enable a quick refund process upon receipt of returned items.

Thank you for your continued understanding during this process

Returns address
ButlerBus Technik Ltd
Bridge Road
United Kingdom

    Specific Terms:
  • All costs relating to return shipping of correctly supplied goods shall be the responsibility of the purchaser.
  • ButlerBus Technik Ltd are not responsible for any shipping or insurance charges relating to return of goods.
  • Please be aware that ButlerBus Technik Ltd may NOT be able to accept for full or partial refund/credit any items that have been prior installed by the customer before return. Such goods/components shall be deemed 'used' and therefore unable for subsequent resale.
  • Specifically, but not exclusively, the return of prior installed electronic items used for purchaser diagnostic or trouble-shooting purposes shall not be considered for full refund.
  • The decision to refund or partially refund prior installed items shall remain solely at the discretion of ButlerBus Technik Ltd.
  • The decision to refund or partially refund goods returned beyond 30 days after original date of sale shall remain solely at the discretion of ButlerBus Technik Ltd.

Your statutory rights are unaffected by the above. Consumers other than Business trade customers are further protected by UK Consumer Protection (Distance Selling) Regulations 2000.

If you have any questions please ask our support department prior to returning any items.

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Webasto Thermo Top Evo 5kW Diesel Camper RV Air and Water 12v Heating Kit

£1,779.96 (ex. VAT)