What are Anti-Sweat Heaters (ASH)?

Anti-sweat heaters (ASH) are electric resistance heaters installed in the frames and doors of reach-in coolers and freezers, commonly found in convenience stores and supermarkets, and are essential for maintaining clear, fog-free glass display doors.

These heaters prevent condensation, which depends on the surrounding air's moisture content and temperature, known as the dew point.

Higher humidity and temperature cause condensation when in contact with cool surfaces, similar to the outside of a glass of ice water in warm temperatures. Without ASHs, condensation on refrigerated case glass doors and frames is a frequent issue.

What are ASH Controls?

Factory setting keeps an ASH operational 100% of the time. However, given that most commercial coolers are situated in air-conditioned spaces and climate zones without extreme heat and humidity, our research has shown that an ASH heater that door heaters can function effectively with reduced power. When a refrigerator door is heated, much of that heat transfers directly into the refrigeration case, increasing cooling costs. Reducing ASH power lowers the refrigeration system's load, resulting in decreased compressor run time and energy consumption.

Over the past 15 years, we have developed and refined our Thermal Control Module®. Our patented technology has been proven to save over 75% of the ASHs' power. With energy costs at an all-time high and expected to increase even more rapidly in the future, there has never been a more opportune time to invest in this innovative technology.

Approximately 80% of refrigerated display cases in the USA do not have an ASH controller installed

Benefits of the Thermal Control Module®

Reduces heat into the interior of the building, also reducing your cooling costs

Reduced run time for you refrigeration system, extending the life of your compressor and other refrigeration components

Keeps the products closest to the display door, typically single serve beverages, even cooler

Saves store owners up to $200 per reach in cooler door, per year

Our Thermal Control Module® offers peace of mind, backed by our 5-year replacement warranty, and our 25-year parts warranty

Our energy-efficient products support American manufacturing, and long term environmental sustainability

What are Anti-Sweat Heaters (ASH)?

Anti-sweat heaters (ASH) are electric resistance heaters installed in the frames and doors of reach-in coolers and freezers, commonly found in convenience stores and supermarkets, and are essential for maintaining clear, fog-free glass display doors.

These heaters prevent condensation, which depends on the surrounding air's moisture content and temperature, known as the dew point.

Higher humidity and temperature cause condensation when in contact with cool surfaces, similar to the outside of a glass of ice water in warm temperatures. Without ASHs, condensation on refrigerated case glass doors and frames is a frequent issue.

What are ASH Controls?

Approximately 80% of refrigerated display cases in the USA do not have an ASH controller installed

Benefits of the Thermal Control Module®