5 kW

Name: Air Top Evo Diesel Warm Air Heater 55D / 12 V / 5 kW
Brand: WEBASTO
Price: 2539.95 EUR
Availability: InStock
Rating: 4.375 (8 reviews)

SVB item number: 42911 Manufacturer no.: 9036996A

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View Ratings (8) Questions (4)

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Hugh F.: "Quality - Good"

Used on a Jeanneau Jeanneau Sun Odyssey 410

Used on a Bavaria 50 Cruiser

Used on a Sun Odyssey 42 DS

Used on a Sun Odyssey 49i Performance

Used on a Evasion 37

Is in 2 shopping baskets right now, grab yours now!

More than just hot air!
Webasto air heating systems have proved their worth more than a million times in yachts, cars, buses and trucks. The hot air blower of the compact heater creates your preferred room temperature individually. Product details

Recommended retail price: €2,831.01

only €2,539.95

-10%

VAT inc., ex-works

You save: €291.06

> 6 | in stock

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Available variants

WEBASTO Air Top Evo Diesel Warm Air Heater 40D / 12 V / 3.5 kW

€2,521.61

only €2,219.95

VAT inc., ex-works

To product

WEBASTO Air Top Evo Diesel Warm Air Heater 55D / 24 V / 5 kW

only €2,739.95

VAT inc., ex-works

To product

WEBASTO Air Top Evo Diesel Warm Air Heater 40D / 24 V / 3.5 kW

€2,521.61

only €2,279.95

VAT inc., ex-works

To product

At a glance!

customers like: Power

customers like: Operation

by Hugh F.

Quality Good

Read all product reviews

by Christian S.

Fast delivery, everything tip top!

Read all product reviews

by BioreVic S.

Everything was correct and on time in transport. Everything is perfect!!

Read all product reviews

Product data

SVB item number 42911
EAN 4054037238444
Manufacturer no. 9036996A
Description WEBASTO - Diesel hot-air heater AIR TOP EVO 55D
Fuel Diesel
Operating voltage 12 V
Heating capacity (continuous operation) 1.5 - 5 kW
Heating capacity (boost function) 5.5 kW
Airflow 220 m³/h
Power consumption 15 - 130 W
Fuel consumption 0.18 - 0.67 l/h
Boost function Yes
Number of outputs 1
Inlet-Ø 90 mm
Outlet-Ø 90 mm
Exhaust-Ø 24 mm
Length 423 mm
Width 148 mm
Height 187 mm
Weight 5.9 kg
For boats 12 - 15 m
For Bavaria CRUISER 46, S 45

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Product details

More than just hot air!
Webasto air heating systems have proved their worth more than a million times in yachts, cars, buses and trucks.
The hot air blower of the compact heater creates your preferred room temperature individually. Moisture and cold stay where they belong: outside!

Special features of the Webasto air heating systems:
Easy to install, economical in their purchase and consumption, quiet operation, stepless ventilation function, delivered with complete marine installation kit, meets current requirements for boats.
The new EVO units are supplied with the new MultiControl ATE control panel and additionally feature a boost function for rapid heating, an ECO mode for reducing power consumption (approx. 70%) and improved operating software.

Marine Heater Kit:

Control unit with thermostat and temperature sensor
Heater with mount bracket
Fuel pump with bracket
Electrical prewire kit for heater (9.5 m)
Fuel pump wire kit (7.0 m)
Fuel filter and 5 m fuel line
Tank connector
Stainless steel flexible exhaust duct with muffler
Stainless steel through hull flue gaskets
Combustion air supply duct 25 mm Ø

Included with the Webatso marine version:
We deliver all Webatso warm air heaters with the complete marine Heater Kit. Ducts for air supply and warm air, air outlets, clips, elbow pipes, couplings and reducer are not included in delivery.

Fuel

Diesel

Operating voltage

12 V

Boost function

Number of outputs

For boats

12 - 15 m

42909_42910_42911_42912_WEBASTO_Air_Top_Evo_40_55_mit_MultiControl_ATE.jpg

Documents

Brochure

PDF (16,85 MB)

Manual

PDF (330,69 KB)

Manual

PDF (1,07 MB)

Product safety

What other SVB customers have to say

100% real reviews

8 customer reviews

4.4 (out of 8 ratings)

5 Stars

(5)

4 Stars

(2)

3 Stars

(0)

2 Stars

(1)

1 Stars

(0)

Advantages
Weight (3)
Power (4)
Operation (4)
Price/performance ratio (3)
Quality (3)
Mounting/Installation (1)

Disadvantages
Price/performance ratio (1)
Mounting/Installation (3)

by Jean marc F.

11/25/2025 Verified purchase Variant: 42911

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Very good product, assembly a bit complicated and initial operation was erratic. This was due to the wiring harness and an electrical diagram with too many versions.

Advantages
Weight
Power
Operation
Price/performance ratio

Disadvantages
Mounting/Installation

by Raymond W.

12/1/2022 Verified purchase Variant: 42909

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Webasto Evo40 kit practical for renewal but be careful with the configuration

Point n 1 Bravo SVB for the fast and efficient delivery.
Point n2 On the product, the presentation should be more precise on the part of Webasto and from the outset offer additional options to the kit or the possibility of an "à la carte" kit. Example length of the exhaust outlet for example, longer hoses, etc.
In any case, in the event of replacement of an old installation, it is advisable to take the dimensions of the various existing accessories. All the more so if the space is difficult to access and you do not want to return there for the next 10 years to replace an existing one. undersized filter for example.

by Gilles C.

12/7/2025 Verified purchase Variant: 42911 in use on a Bavaria Yachtbau GmbH - Bavaria 40 Cruiser

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Be warned, Webasto installation doesn't make things easy for you!!!

I'm replacing a 3500ST that I was never able to get repaired (due to Webasto's unresponsiveness) with a 55EVO, a seemingly simple operation. (Note: I'm an engineer and I do everything myself on board!)
In practice, the supplied kit has numerous defects and omissions that make installation problematic and generate a considerable waste of time!

Part of the wiring harness is pre-assembled, but not the other part. The wires going to the diesel pump are left hanging loose, and the connectors are supplied in a separate small bag. However, the documentation shows the completed harness without indicating the wire arrangement in the connector... and the wires are all the same color!

The main power harness is pre-assembled with a huge fuse box that can't be routed through conduits. You have to start by removing the harness to route it through the conduits and then reassemble it! Some necessary assembly components are missing: the condensate drain elbow, the exhaust sleeve, AND THERE IS NO PACKAGING LIST IN THE SUPPLIED KIT. As a result, it's only halfway through assembly that you realize you need to order optional parts and therefore wait another week to continue the project... The same goes for the essential thermal insulation sleeve for the exhaust, which is also not included!

The technical documentation and installation instructions are extremely confusing, mixing up all the product variants (2000, 4000, 5500) and all the control system variants (even giving the same name to two distinct control systems that don't connect in the same way). Once you understand it, it's very simple, and you wonder why the explanation is so convoluted. Zero points for clarity and educational value.

Furthermore, when you call WEBASTO at the customer support number listed in the documentation and, after three days of trying, finally get through, you're "politely" turned away and referred to "the authorized installer from whom you purchased the product"!!!

Paying 15 times the price of a Chinese knock-off for no better service, is that really worth it? WEBASTO should take a good look at themselves instead of relying on their reputation.

In the end, the boiler replacement, which I planned to do in 3 days, took me 3 weeks, and I still have to add the extra air vents. Here again, the documentation is lacking; the number of "air points" needed to calculate pressure losses due to fittings, elbows, vents, etc., isn't specified for the 55EVO... I know it's an Air Top 2000 S ST max. 325 points.
Air Top 3500 ST max. 550 points.
Air Top 5000 ST max. 375 points.

But nothing on the EVO 55, so I don't know if I'll be able to add the extra vents, which was the main reason for upgrading to the next model up!

Last point: WEBASTO REFUSES to register your heater for the international warranty if you are a private individual. The product registration website is only accessible to authorized dealers and/or installers. I hope SVB can help me with this; otherwise, they might as well just remove WEBASTO from their catalog altogether!