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Webasto Air Top EVO 40 Air Heater 4kW 13650 BTU Gasoline Petrol RV 12V

Part Number: 9032724A
  • Now $1,293.22 (ex. VAT)
  • (FREE UK Delivery)
Item out of Stock   |   Usually dispatched within 24 hours
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Webasto Air Top Evo 40 12v Petrol Heater Kit

The first choice for cost effective gasoline heating of RV, Large motorhome, driver cabins, cargo spaces and vehicle interiors. With a maximum heat output of 4kW the Air Top EVO 40 provides warm comfort through a gentle and uniform heating process and short heating times, with temperature pre-selection via the included rotary rheostat control.

High Altitude Operation

High altitude auto sensing heater with compensation up to 2200 metres (7,218 feet). To enable high altitude operation add the Webasto Multi Control HD timer.

This air heater can be installed in addition to conventional heating systems for optimum comfort or cargo heating.

KIT CONTENTS - exactly as images

Everything you need to complete a professional installation * requires 90mm ducting and outlet(s) to suit your installation *

  • Webasto Air Top Evo 40 with rotary rheostat control
  • Automatic altitude compensation to 7,218 ft (2,200 m) (upgrade to 7 day timer or MC Air Top Evo Control Optional – please enquire if required)
  • All electrical harnesses and connections
  • Fuel pump harness
  • 4m Switch & power harness
  • 1 metre of stainless steel 24mm exhaust pipe (additional 24mm exhaust pipe cut to length if required)
  • Combustion air Intake silencer pipe 0.6m long
  • Fuel system with 8m fuel pipe, complete with fuel metering pump & hose clips (The kit does NOT include a fuel standpipe)
  • Air entry inlet grille
  • All necessary clips and screws for standard installation included
  • Comprehensive installation manual available from downloads section

Please note:
The kit does NOT include ducting or air outlets - please see 90mm ducting and outlets parts picker - 90mm ID

Two Year Warranty

This is a genuine Webasto manufacturer warranted heater kit with 24 Months Warranty (return to Butler Technik)

Heater Applications Include

  • RVs, Camper vans 
  • Vans and Small Buses
  • Caravans—Mobile Homes
  • Mobile Workshops
  • Horse boxes
  • 4 x 4 Vehicles


We provide a wide range of secure payment options including Debit & Credit Card, PayPal (with interest free Pay-In-3), Amazon Pay, Gpay and ApplePay.

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You can enjoy total peace of mind when you shop online with Butler Technik.

Our site uses a secure payment gateway that encrypts your credit or debit card information, ensuring total protection of your payment details throughout your purchasing experience.

You also have the options of paying using your Amazon account, Google Pay on your android phone or ApplePay on your Apple device.

Shopping at Butler Technik is always simple, safe and secure.

Please Note: Delivery prices quoted are excluding VAT.

UK Postage Table

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 use the drop down menu under Shipping Options and 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 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 an questions please ask our support department prior to returning any items.

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