Did you know? Category winner Water Boilers

WEBASTO THERMO PRO 90 Marine Diesel Water Heater / 24 V / 9.1 kW

SVB item number: 42901 Manufacturer no.: 9029941C
View Ratings (2) Questions (2)
Made in Germany
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Ensure you have warm water as well as a warm cabin on board with this diesel water heater. If you use water on your boat, you'll also want it to be hot. Not a problem for Webasto's modern water heaters. They can also be used to preheat the engine.
Product details
Recommended retail price: €3,045.21
only  €2,689.95
-12%
You save: €355.26
Expected to be in stock within 2-3 weeks
pcs.
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Available variants

THERMO PRO 90 Marine Diesel Water Heater / 12 V / 9.1 kW
THERMO PRO 90 Marine Diesel Water Heater / 12 V / 9.1 kW
WEBASTO THERMO PRO 90 Marine Diesel Water Heater / 12 V / 9.1 kW
€2,985.71
only €2,709.95
VAT inc., ex-works
To product

At a glance!

Fuel: Diesel
Fuel: Diesel
24 V
24 V
Max. flow rate
Max. flow rate: 12 l / min
Boost function
Boost function
Number of outputs: 1
Number of outputs: 1
For boats: 10 - 15 m
For boats: 10 - 15 m
by port D.
Practical and efficient heating A central heating that replaces a Kabola boiler, gain in ease of use. During the first use I will complete my opinion
Read all product reviews

Product data

  • SVB item number 42901
  • EAN 4054037209536
  • Manufacturer no. 9029941C
  • Description WEBASTO - Thermo Pro 90 Marine water heater
  • Fuel Diesel
  • Operating voltage 24 V
  • Heating capacity (continuous operation) 1.8 - 7.6 kW
  • Heating capacity (boost function) 9.1 kW
  • Max. flow rate 12 l/min
  • Power consumption 20 - 90 W
  • Fuel consumption 0.18 - 1.3 l/h
  • Boost function Yes
  • Number of outputs 1
  • Inlet-Ø 20 mm
  • Outlet-Ø 20 mm
  • Exhaust-Ø 38 mm
  • Length 352 mm
  • Width 131 mm
  • Height 232 mm
  • Weight 5.3 kg
  • For boats 10 - 15 m

Accessories

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Heavy-Duty Stainless Steel Hose Clamps
from €5.00
Image of Through-Hull / straight
-30%
Through-Hull / straight
from €11.95
Image of Fuel T-Piece
WEBASTO Fuel T-Piece
from €3.60
Image of Heat exchanger with heater fan MADERA 4D
-7%
WEBASTO Heat exchanger with heater fan MADERA 4D
only €239.95
Image of Heat exchanger with heater fan MADERA 8D
-8%
WEBASTO Heat exchanger with heater fan MADERA 8D
only €344.95
Image of Exhaust Thru-Hull / straight
-35%
Exhaust Thru-Hull / straight
only €29.95
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WEBASTO Room Thermostat for Heat Exchangers
only €179.95
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WEBASTO MAR RV TT MultiControl Control Panel for Air Heater
only €132.95
Image of Stainless Steel Hose Clamps
-24%
Stainless Steel Hose Clamps
from €2.10
Image of Cooling Water Hose - Heavy Duty
Cooling Water Hose - Heavy Duty
from €25.95

Product details

Ensure you have warm water as well as a warm cabin on board with this diesel water heater. If you use water on your boat, you'll also want it to be hot. Not a problem for Webasto's modern water heaters. They can also be used to pre-heat cold engines.
An overview of the advantages:
  • Space-saving installation in the engine room
  • Preheat the engine
  • Hot water for the galley and shower
  • The right temperature - no dry air
  • Low fuel consumption
  • Space-saving installation with thin hot water pipes (copper, plastic pipes or tubing)
  • Can be connected to the hot-water heat fan

Technical Data

Heating capacity Fully adjustable 1.8-7.6 kW
Boost function 9.1 kW
Fuel source Diesel
Power consumption 20 - 90 W
Fuel consumption 0.19 - 1.3 l/h
Circulation pump 700 l/h
Dimensions 355 x 133 x 232 mm
Weight 5.3 kg
Exhaust pipe inner ø 38 mm
Heating type Fully adjustable water heating
For vessel lengths 10-15 m
Features Marine
Delivery contents Marine version
  • 24V heater with circulation pump
  • Bracket for heater
  • Cable harness
  • Switch with light
  • Dosing pump
  • Fuel hose 6 m
  • T-shaped fuel extractor
  • Intake hose 0.4m
  • Exhaust muffler
  • Exhaust muffler, stainless steel
  • Exhaust reduction box
  • Plastic pipes + clamps
  • Thru-hull fittings
  • Hoses

Features

Discover the features that make this product stand out. From technical details to special functions – we’ve summarized all the key information for you.

Fuel
Diesel
Operating voltage
24 V
Max. flow rate
12 l/min
Boost function
Number of outputs
1
For boats
10 - 15 m
42900_WEBASTO_Wasserheizung_Thermo_Pro_90.jpg

Documents

de-flag Brochure
PDF (16,85 MB)
de-flag Datasheet
PDF (233,16 KB)
de-flag Manual
PDF (3,05 MB)

Product safety

Contacts

What other SVB customers have to say

100% real reviews

2 customer reviews

4.5 (out of 2 ratings)
5 Stars
(1)
4 Stars
(1)
3 Stars
(0)
2 Stars
(0)
1 Stars
(0)
All reviews Helpful reviews Latest ratings 5
4
port D.
by port D. Flag of France 8/13/2023 Verified purchase Variant: 42901
Translated automatically
Show original text
Practical and efficient heating
A central heating that replaces a Kabola boiler, gain in ease of use. During the first use I will complete my opinion
Jean marc C.
by Jean marc C. Flag of France 8/26/2019 Verified purchase Variant: 42900
Translated automatically
Show original text
Effective but a bit noisy
Installed in the engine compartment of a 12 meter aluminum sailboat quite well insulated. Used for the moment on North Norwegian Navigation and Spitsbergen Associated with 3 water radiators with 2 speed fan. Efficient and reliable A little noisy. Seamless support by the SVB services during the installation that I made alone. A big thank you to them
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Comparison

Image of THERMO PRO 90 Marine Diesel Water Heater / 24 V / 9.1 kW
WEBASTO
THERMO PRO 90 Marine Diesel Water Heater / 24 V / 9.1 kW
Image of THERMO PRO 90 Marine Diesel Water Heater / 12 V / 9.1 kW
WEBASTO
THERMO PRO 90 Marine Diesel Water Heater / 12 V / 9.1 kW
Availability / Price
only €2.689 95
VAT inc., ex-works
Expected to be in stock within 2-3 weeks
only €2.709 95
VAT inc., ex-works
Only 2 in stock
Item no.
42901
42900
Customer ratings
(2)
(2)
Description
WEBASTO - Thermo Pro 90 Marine water heater
WEBASTO - Pro 90 Water Heater
Width
131 mm
131 mm
Fuel
Diesel
Diesel
Heating capacity (continuous operation)
1.8 - 7.6 kW
1.8 - 7.6 kW
Height
232 mm
232 mm
For boats
10 - 15 m
10 - 15 m
Weight
5.3 kg
5.3 kg
Length
352 mm
352 mm
Operating voltage
24 V
12 V
Inlet-Ø
20 mm
20 mm
Outlet-Ø
20 mm
20 mm
Max. flow rate
12 l/min
12 l/min
Boost function
Number of outputs
1
1
Power consumption
20 - 90 W
20 - 90 W
Fuel consumption
0.18 - 1.3 l/h
0.18 - 1.3 l/h
Exhaust-Ø
38 mm
38 mm
Heating capacity (boost function)
9.1 kW
9.1 kW

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WEBASTO THERMO PRO 90 Marine Diesel Water Heater / 24 V / 9.1 kW
View Ratings (2) Questions (2)
€2,689.95
VAT inc., ex-works