3-4 kW Marine Air Heaters

Here you will find Webasto and Eberspacher marine air heaters with a heating output from 3kW to 4kW. Butler Technik, an authorised and leading distributor of Eberspacher and Webasto heating products, offers the following great deals on the Webasto Air Top EVO 40 4kW Diesel Marine Heater Kit and Eberspacher Airtronic M2 D4 L 4KW 12v Diesel 2 Outlet Marine Kit... read more

Don't leave your boating comfort and safety at risk, buy quality Webasto and Eberspacher marine heating products from Butler Technik. If you need any assistance we have a professional support team who are happy to help.

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8 Products
Eberspacher Airtronic D4S Plus to M2 D4R Heater Upgrade Changeover Kit 12V
Eberspacher Airtronic D4S Plus to M2 D4R Heater Upgrade Changeover Kit 12V
Part Number D4RUPGRADE
Now £1,092.88 (ex. VAT) Was £2,732.21 (ex. VAT)  Saving £1,639.33
 Item in stock
Eberspacher Airtronic M2 D4 L 4KW 12v Diesel 2 Outlet Marine Kit inc Easy Start PRO | 292112000048
Eberspacher Airtronic M2 D4 L 4KW 12v Diesel 2 Outlet Marine Kit inc Easy Start PRO | 292112000048
Part Number 292112000048
Now £1,875.00 (ex. VAT) Was £2,916.11 (ex. VAT)  Saving £1,041.11
 Item out of stock
Eberspacher Airtronic M2 D4 L 4KW 12v Diesel 2 Outlet Marine Kit 802 Modulator | 292112000046
Eberspacher Airtronic M2 D4 L 4KW 12v Diesel 2 Outlet Marine Kit 802 Modulator | 292112000046
Part Number 292112000046
Now £1,685.00 (ex. VAT) Was £2,834.97 (ex. VAT)  Saving £1,149.97
 Item out of stock
Eberspacher Airtronic D4 Plus 12v Marine Changeover Kit
Eberspacher Airtronic D4 Plus 12v Marine Changeover Kit
Part Number 292199014779
Now £1,554.17 (ex. VAT) Was £2,392.05 (ex. VAT)  Saving £837.88
 Item out of stock
Webasto Air Top EVO 40 4kW 12v Marine Heater Kit with MultiControl HD 7-Day Timer | 4110220A
Webasto Air Top EVO 40 4kW 12v Marine Heater Kit with MultiControl HD 7-Day Timer | 4110220A
Part Number 4110220A
Now £1,790.83 (ex. VAT) Was £2,303.92 (ex. VAT)  Saving £513.09
 Item out of stock
Webasto Air Top EVO 40 24v Marine Heater Kit | 4110221A
Webasto Air Top EVO 40 24v Marine Heater Kit | 4110221A
Part Number 4110221A
Now £1,450.00 (ex. VAT) Was £2,174.84 (ex. VAT)  Saving £724.84
 Item out of stock
Webasto Air Top EVO 40 12v Single Outlet Marine Heater Kit
Webasto Air Top EVO 40 12v Single Outlet Marine Heater Kit
Part Number ATEVO390012VMARINEKIT
Now £2,200.00 (ex. VAT) Was £3,500.00 (ex. VAT)  Saving £1,300.00
 Item out of stock
Eberspacher Airtronic D4 Plus Marine Heater 12v Diesel Kit| E5305 | 292199015305
Eberspacher Airtronic D4 Plus Marine Heater 12v Diesel Kit| E5305 | 292199015305
Part Number 292199015305
Now £1,962.68 (ex. VAT) Was £2,688.60 (ex. VAT)  Saving £725.92
 Item out of stock

Explore our range of marine air heaters available in a range of 3kw to 4kw at Butler Technik. Renowned brands Webasto and Eberspacher populate this collection, so you can rest assured that your marine heater system is of the best quality.

Need a heater with more heat output? Try the 5Kw to 6Kw marine air heater department.

Shop online at Butler Technik today for 3kW to 4kW air heaters for boating application. With full kits from trusted marine heater manufacturers Eberspacher and Webasto, you can rest assured you are receiving the best quality products and after sales service. Order before 3:00pm to take advantage of our UK Next Business Day Delivery service. Plus, we are proud to ship our products worldwide so you can benefit from our boat heaters no matter where you are across the globe.