COMPACT AIR HEATING
Air Top 2000 STC
A compact option for campervans and smaller cabins. Explore the 12 V diesel single-outlet installation kit.
2 kW12 VDiesel
WEBASTO AIR TOP
Webasto air heaters.
A warmer welcome.
Compare the Air Top 2000 STC, Pro 25 and Evo range.
Explore heating for campervans, motorhomes and cabins.
NEXT GENERATION AIR HEATING
Air Top Pro 25
A broad output range with quiet low-load operation. Explore the 12 V diesel RV kit with MultiControl timer.
2.5 kW boost12 VDiesel
MOTORHOME AIR HEATING
Air Top Evo 40
More heating capacity for larger living spaces. This high-altitude RV kit includes MultiControl HD.
4 kW12 VDiesel
LARGE RV AIR HEATING
Air Top Evo 55
Higher output for larger motorhomes and cabins. Explore the 12 V diesel RV heater package and installation options.
5.5 kW12 VDiesel
View current prices, kit contents and availability at Butler Technik. Match the heater and installation kit to your application.
THE RANGE AT A GLANCE
Find your starting point.
| Heater model | Heating type | Output | Explore for |
|---|---|---|---|
| Air Top 2000 STC → | Air | 2 kW | Compact cabin heating |
| Air Top Pro 25 → | Air | 2.5 kW boost | Wide output range in a compact heater |
| Air Top Evo 40 → | Air | 4 kW | Motorhomes and larger cabins |
| Air Top Evo 55 → | Air | 5.5 kW | Larger motorhomes and heating demand |
| Thermo Top Evo → | Water | 5 kW | Marine or RV systems, with the right kit |
| Thermo Pro 90 → | Water | Up to 9.1 kW | Commercial coolant heating |
| Thermo Top Pro 120 → | Water | 12 kW | Higher-output vehicle heating systems |
Headline maximum or boost outputs are shown. Heater sizing also depends on insulation, space, climate and heat loss. Confirm the model, fuel, voltage and kit contents before ordering.
A LITTLE KNOWLEDGE GOES A LONG WAY
Before you choose.
Answers to the questions
that shape a good installation.
Should I choose an air or water heater?
An air heater warms the cabin directly through ducting. A water heater heats a coolant circuit that can supply heat exchangers, radiators or a calorifier, depending on the installation. Choose around the warmth and hot-water functions you need.
How much heating output do I need?
Start with the space, insulation, expected outside temperatures and how heat will be distributed. Maximum output alone is not enough to size a heater. Butler Technik can help match the heater and kit to your vehicle or boat.
Are vehicle and marine kits interchangeable?
Choose a kit intended for the application. Marine and vehicle installations have different component and routing requirements. Check the installation manual and ask for advice before choosing a kit for a boat.
Can I add a timer or phone control?
Many systems support additional control options. Compatibility depends on the heater version, communication protocol and harness. MultiControl is available in air and water variants; ThermoConnect also requires suitable coverage and a service plan.
Where do I find manuals and replacement parts?
Use our technical library to find documents by model. For parts, check the identification plate, fuel, voltage and part number, then follow the links to Butler Technik for current stock and purchase options.
Open the technical library →