Marine Water Heaters

Great prices on marine water heaters from Eberspacher and Webasto. Take a look at the D5WSC to Hydronic S3 upgrade kit, perfect for boat owners who have the older D5WSC water heater, which it is now becoming more difficult and expensive to repair... read more

We stock a wide range of high quality marine water heaters and deliver worldwide, to provide space heating and domestic hot water heating for all sized vessels. From narrowboats to ocean going yachts and cruisers, and we also build bespoke marine water heater kits upon request.

As a Butler Technik customer you have access to the Butler Technik technical support team, along with a full heater technical library at your disposal with free downloadable instructions and manuals.

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16 Products
Eberspacher Hydronic D5WSC heater to Hydronic S3 D5E 12V Upgrade Kit inc EasyStart PRO Timer
Eberspacher Hydronic D5WSC heater to Hydronic S3 D5E 12V Upgrade Kit inc EasyStart PRO Timer
Part Number 252993050007
Now £995.00 (ex. VAT) Was £1,448.91 (ex. VAT)  Saving £453.91
 Item in stock
Webasto Eberspacher Hydronic S3 D5E Narrowboat kit inc Easy Start Pro 7 Day Timer | 292135000024
Webasto Eberspacher Hydronic S3 D5E Narrowboat kit inc Easy Start Pro 7 Day Timer | 292135000024
Part Number 292135000024
Now £1,695.00 (ex. VAT) Was £2,305.72 (ex. VAT)  Saving £610.72
 Item out of stock
Webasto Thermo Top Pro 120 Water Heater with Water Pump 12v | 9035585A
Webasto Thermo Top Pro 120 Water Heater with Water Pump 12v | 9035585A
Part Number 9035585A
£2,323.19 (ex. VAT)
 Item out of stock
Webasto Water Heater Thermo Top Pro 120 Installation kit 12v | 9035492A
Webasto Water Heater Thermo Top Pro 120 Installation kit 12v | 9035492A
Part Number 9035492A
£466.18 (ex. VAT)
 Item out of stock
Webasto Eberspacher Heater M-II D10W 12V
Webasto Eberspacher Heater M-II D10W 12V
Part Number 252434050000
Now £1,758.34 (ex. VAT) Was £2,197.93 (ex. VAT)  Saving £439.59
 Item out of stock
Webasto Thermo Top Evo 5 Diesel Narrowboat kit with seven day timer
Webasto Thermo Top Evo 5 Diesel Narrowboat kit with seven day timer
Part Number 4117864A
Now £1,495.47 (ex. VAT) Was £2,038.81 (ex. VAT)  Saving £543.34
 Item in stock
Webasto Thermo Top Evo 5 Diesel Marine kit with Multi-controller HD 12v | 4117849A
Webasto Thermo Top Evo 5 Diesel Marine kit with Multi-controller HD 12v | 4117849A
Part Number 4117849A
Now £1,525.83 (ex. VAT) Was £2,186.01 (ex. VAT)  Saving £660.18
 Item in stock
Eberspacher D5W S water heater diesel 24v | 252218050000
Eberspacher D5W S water heater diesel 24v | 252218050000
Part Number 252218050000
Now £1,508.30 (ex. VAT) Was £1,885.37 (ex. VAT)  Saving £377.07
 Item in stock
Webasto Thermo Top C 300 Marine RV Replacement Unit Only | 9023521A
Webasto Thermo Top C 300 Marine RV Replacement Unit Only | 9023521A
Part Number 9023521A
Now £925.79 (ex. VAT) Was £1,483.23 (ex. VAT)  Saving £557.44
 Item out of stock
Eberspacher Ebersapcher Hydronic M10 12v Marine Heater Kit
Eberspacher Ebersapcher Hydronic M10 12v Marine Heater Kit
Part Number 292199013554
Now £2,280.00 (ex. VAT) Was £3,609.01 (ex. VAT)  Saving £1,329.01
 Item out of stock
Eberspacher Hydronic 5 Narrow Boat kit 12v
Eberspacher Hydronic 5 Narrow Boat kit 12v
Part Number 292199012648
Now £1,474.99 (ex. VAT) Was £2,489.64 (ex. VAT)  Saving £1,014.65
 Item out of stock
Webasto DBW 2010 11.6kW Water Heater 24v | 9023679A
Webasto DBW 2010 11.6kW Water Heater 24v | 9023679A
Part Number 9023679A
Now £1,940.41 (ex. VAT) Was £3,053.18 (ex. VAT)  Saving £1,112.77
 Item out of stock
Webasto Thermo Pro 90 24v Marine Kit With Switch | 9.1kW | 4111185A
Webasto Thermo Pro 90 24v Marine Kit With Switch | 9.1kW | 4111185A
Part Number 4111185A
Now £1,995.49 (ex. VAT) Was £2,494.36 (ex. VAT)  Saving £498.87
 Item in stock
Webasto Thermo Pro 90 12v Marine Kit with switch
Webasto Thermo Pro 90 12v Marine Kit with switch
Part Number 4111135A
Now £1,927.92 (ex. VAT) Was £2,535.01 (ex. VAT)  Saving £607.09
 Item in stock
Webasto Thermo Top E narrowboat kit | 4110462F
Webasto Thermo Top E narrowboat kit | 4110462F
Part Number 4110462F
Now £1,067.34 (ex. VAT) Was £1,679.45 (ex. VAT)  Saving £612.11
 Item out of stock
Eberspacher Hydronic D5WSC Water Heater 12V Replacement Unit | 252219050000
Eberspacher Hydronic D5WSC Water Heater 12V Replacement Unit | 252219050000
Part Number 252219050000
Now £879.50 (ex. VAT) Was £1,684.88 (ex. VAT)  Saving £805.38
 Item out of stock