Smart control for your Autoterm diesel heater

Updated 9 October 2026Heaty

Autoterm 2D and 4D can be controlled smartly with the Heaty module. You then set target temperature, timer and operating mode on your phone or on the SmartKnob, all equal and in sync.

What you need

  • A Heaty with the wiring harness for Autoterm, which you choose when ordering
  • A SmartKnob as the centre of the system

The wiring harness is always included in the box, it does not cost extra. Heaty gets its power directly from the heater through it, so there is no need for an extra power cable.

What becomes possible

You see the status of the heater in real time on the SmartKnob and in the dashboard. The target temperature is controlled by the sensor you choose when creating the widget, for example by the sensor built into the SmartKnob instead of a sensor on the heater.

On top of that come schedules and scenes: warming up in the morning, lowering the temperature at night or starting automatically when it gets too cold. You can still control it by hand at any time, equally from all control points.

Several heaters in the vehicle

One Heaty is used per heater. If you have two independent heaters, a second module is added. Each heater remains individually controllable and can be used separately in automations.

Technical data

  • Input voltage 9-36V, so 12V and 24V
  • Own consumption 0.3W
  • Dimensions 88×65×18mm
  • Encrypted wireless connection to the SmartKnob, local in the vehicle, without cloud

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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