ControlTec helps grocery operators reduce anti-sweat heater runtime, verify savings, and keep display cases operating safely across every store.
Co-developed with one of the world's largest glass-display-door manufacturers - built to retrofit your refrigeration cases without disruption.
Sensors on every case report through controllers that network over a self-healing wireless mesh, with built-in measurement & verification - so savings are documented, not estimated. No new network wiring, no store disruption.
Glass-door heaters run only when ambient conditions demand it. No condensation, no wasted kilowatt-hours, no compromise on product visibility.
Speaks BACnet/IP and Modbus TCP - feeds your existing EMS/BMS. No new dashboards required to get started.
Heater elements sit inside every door frame, around the glass, and in the mullions to stop condensation and keep product visible. Legacy refrigeration systems simply leave them on - all day, all night, all year.
That's $10K-$38K of pure electricity per store, per year spent on heat that wasn't needed. Refrigeration is already more than half of a grocery store's energy bill - and door heaters are one of its largest single loads.
Watch a single refrigerated case over 24 hours. The AS-20 keeps the frame a safe margin above the dew point - and intelligently cycles the heater only when that margin would close.
The dew-point sensor reads ambient store dew point right outside the case; the frame-temp sensor reads the frame. When the frame is safely warmer than the dew point, condensation can't form - so the heater stays off. No new behavior, no store disruption.
Watch the data flow from every case up to the gateway and out to the cloud and your building controls - then explore any node.
See per-site efficiency, kWh and dollars saved, AS-20 health score, and low-efficiency events in real time. Alerts surface the moment a heater behaves out of spec, so you fix it before it costs you.
Open protocols mean the AS-20 feeds your existing energy and building management, with no new dashboard required.
Less energy isn't just cheaper - it's measurable progress toward your ESG goals, captured automatically by the system's metering.
Carbon equivalencies per EPA Greenhouse Gas Equivalencies Calculator · US grid avg 0.857 lb CO₂/kWh
An anti-sweat heater control system manages the heaters built into refrigerated glass display doors. Instead of running the door-frame, glass, and mullion heaters 24/7, the ControlTec AS-20 reads dew point and frame temperature and cycles heaters only when condensation is an actual risk.
A typical 100-door store saves roughly $10,000-$38,000 per year and 95,000-155,000 kWh by cutting energy use 50-80%, with payback in under two years - and faster after utility rebates.
No. The AS-20 keeps each door frame a safe margin above the dew point and cycles heaters the moment that margin closes, so the glass stays clear and product stays visible, even on high-humidity days.
Yes. The CommZ gateway speaks BACnet/IP and Modbus TCP, feeding per-case data into your existing energy or building management system, with no new dashboard required.
Installation is a straightforward retrofit or factory-installed option with no store disruption. The AS-20 is patented and made in the USA, with tens of thousands of controls already installed across thousands of store locations.
Run the numbers for your stores in 30 seconds, or talk to our team about a rollout - we even handle the utility rebate paperwork.