Take full control of your diesel heater with the AUTOTERM Comfort Controller — the advanced digital control panel designed for AUTOTERM Air and Flow (liquid) heaters. Whether you're deep in the mountains or parked up at a remote campsite, this controller gives you precise, intuitive control over your heating from a single panel.

What it does
The Comfort Controller replaces the basic controller that ships with your heater, giving you four distinct heating modes, three programmable timers, and a built-in temperature sensor — so you can set it and forget it, or fine-tune the heat exactly how you like it.


Temperature Mode — Maintains your set temperature by continuously adjusting heater power. No on/off cycling, just consistent warmth.
Thermostat Mode — Heater shuts down completely once it reaches your target temperature and restarts only when it drops. Great for overnight use when you want quiet.
Power Mode — Runs the heater at a fixed power level, just like the original controller. Simple and reliable.
Heat + Ventilation Mode — Heats to your target, then switches to fan-only mode to circulate air until the temperature drops. Maximises comfort without overcooking your van.


Smart features for van builders and overlanders

Three independent programmable timers — set by day, weekday, or custom schedule. Your van can be warm before you wake up.
Quick-start button for instant heat with one press
Vehicle battery protection — monitors voltage and shuts the heater off before your battery drops too low
30-day maintenance reminder to keep fuel lines clear and prevent gelling
Built-in digital temperature sensor with ±1.5°C calibration offset
LED status indicator: red for heating, blue for ventilation, green for shutdown
Compatible with the Autoterm QStart LTE modem for remote control via smartphone app
Supports 13 languages


Compatibility
Compatible with the full current AUTOTERM range:

Air heaters: Air 2D (2kW), Air 4D (4kW), Air 8D, Air 9D
Flow liquid heaters: Flow 5D / 5B, Flow 14D
Also compatible with Travel Box 2.0 and most heaters sold under the older Planar branding


Specifications

Dimensions: 82 x 37 x 19 mm
Display: 37 x 20 mm backlit LED screen
Voltage: 12V and 24V compatible
Cable: supports runs up to 10 metres (extension harnesses available separately)
Part number: AT0050