Smart control for the diesel heater in your camper: how it works

Updated 9 October 2026Heaty

Your existing diesel heater can be controlled smartly without replacing it. The Heaty module is connected directly to your heater with the matching wiring harness, which is included. After that you set the target temperature, heating or ventilation, timer and operating mode on your phone, tablet or SmartKnob.

Which heaters work

Currently the Autoterm 2D and 4D, Timberline 1.0 and 2.0, the Webasto Air Top and the Eberspächer Airtronic S2 and S3. More Eberspächer heaters and air conditioners as well as Truma and Alde will follow.

What this changes

Every diesel heater comes with its own control panel, usually with complicated operation. With Heaty, control of the heater sits where light, water and energy are too: in one interface for the whole vehicle. Everything runs locally in the vehicle, without cloud and without having to use an app.

You choose the temperature sensor yourself

When you create the widget, you decide which sensor provides the temperature. For example the SmartKnob's internal sensor in the living area instead of a sensor directly on the heater. That way the control is based on the place where you actually are.

Automations are what make it really good

Preheat in the morning before the alarm goes off. Lower the temperature at night. Or start automatically when the temperature drops below a certain value. You can still control it by hand at any time.

What you need

  • A Heaty with the wiring harness for your heater, which you choose when you order
  • A SmartKnob as the central unit of the system

The wiring harness is always included in the scope of delivery. Heaty takes its power directly from the heater through it, so you do not need an extra power cable. One Heaty is used per heater: if you have two independent heaters, you add a second module.

Related questions

Which heaters can I control with Heaty?

Heaty controls your existing parking heater directly, currently the Autoterm 2D and 4D, Timberline 1.0 and 2.0, the Webasto Air Top and the Eberspächer Airtronic S2 and S3. Heaty connects directly to the heater with the matching wiring harness, which is included. More Eberspächer heaters and air conditioners as well as Alde and Truma will follow. Instead of fiddling with your heater's small original control panel, you simply set temperature, timer and operating mode on the SmartKnob or in the dashboard. One control for everything in the van, without a brand-specific display or app.

Do I need a SmartKnob for Heaty to work?

Yes. Heaty is a module and connects to the SmartKnob, which is the hub of the system. Without a SmartKnob there is no user interface and there are no automations. If you already have one in your vehicle, you simply pair Heaty with it.

Is one Heaty enough for my whole camper?

One Heaty controls exactly one heater. If you have two separate parking heaters in your vehicle, each gets its own Heaty. In return, each one stays individually and cleanly controllable via the SmartKnob and fits perfectly into scenes and automations.

What is included with Heaty?

Everything you need to connect it: the Heaty module, the wiring harness for exactly the heater you select when ordering, and four mounting screws. Because the cable already fits your heater, installation is genuinely plug-and-play: no tinkering, no hunting for adapters.

Does Heaty need a separate power supply?

Usually not. The supplied wiring harness is designed so that Heaty gets its power directly from the heater. That saves you extra cables and valuable build time. The exception is the Timberline: there, Heaty needs its own additional 12V supply. Just plug it in: as soon as Heaty is supplied with power, it actively starts looking for a SmartKnob in pairing mode.

Does Heaty work on 12V and 24V?

Yes. Heaty works in the range from 9 to 36V, so it fits both 12V and 24V systems. It takes its power directly from the heater via the supplied wiring harness anyway.

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