The AS-20 is a complete anti-sweat door heater control system: a patented controller, two purpose-built sensors, a wireless gateway, and the Case Manager cloud - co-developed with one of the world's largest glass-display-door manufacturers and engineered for easy retrofit. Want to see how ASH controls stack up against every other refrigeration measure? See the full ranking.
The controller reads both sensors, applies the decision rule, and intelligently cycles the door heaters case-by-case - logging every state change and sensor reading, 24/7.

Instead of running heaters around the clock, the AS-20 knows the exact moment condensation could form - and acts only then. This is dew point control done right.

Reads the aisle-facing air to find the dew point - the temperature at which condensation will form on the glass.
Reads the heater-surface temperature, so the controller knows exactly how close it is to the dew point.
Every reading is stored off-site and available in real time through secure cloud servers. Log in from anywhere to fine-tune performance, run M&V, and catch failing equipment before it becomes a crisis.
Case & frame temperatures, humidity and dew point, logged continuously.
Energy saved per case and total dollars saved - documented for M&V.
Case & temperature alarms sent straight to your phone or email to prevent spoilage.
The CommZ gateway feeds your existing EMS/BMS over industry-standard protocols - so the AS-20 drops into the systems you already run.


Retrofit or factory-installed - talk to our team, or estimate your savings first.