• Automatic reset thermal cut-out - safety feature preventing overheating, will reset automatically after cool-off Air flow sensor - modulates the heating capacity according to the quantity of air flowing through the heater Open coil elements - made of the highest grade nickel-chrome resistance wire, they will not age or oxidize, thus assure longer heater life Temperature sensor - controls the heater proportionally to maintain the pre-set air temperature in the duct Enclosure - corrosion-resistant galvanized steel Built-in electronic temperature controller and sensor - proportionally modulates the heating load to match the exact capacity required, thus minimizing operating cost Manual reset thermal cut-out - additional safety feature which prevents the frame from overheating Round collars - simplifies the installation and considerably reduces field labor Terminal block - only one electrical connection required through an easily accessible power terminal block

Today's airtight homes and offices beg for fresh air. When we trap the heat, excess humidity and indoor pollutants such as cleaning products, smoking and pets, will negatively affect the quality of the air we breathe, making our environment both uncomfortable and unhealthy. Stale and humid air has to be replaced by fresh air. During winter, the incoming fresh air is at too low a temperature to be comfortable and requires preheating. It is more economical to preheat the incoming air at a specific, controlled source than requiring the central system to continually compensate for heat loss. The TheRMO-AIR heater is designed to complement your heating system by preheating this fresh air, thus continuously providing comfortable ventilation throughout the house. Equipped with the most advanced modulating controller and air sensor, the TheRMO-AIR heater will operate with extremely low air flow (see specifications). The unit uses the minimum amount of energy required to meet your needs. The air flow sensor detects the amount of air flowing through the unit and modulates the heating capacity accordingly, maximizing savings. The TheRMO-AIR heater is a quality product engineered for peak performance, low operating cost and long-life.