Today's Airtemp indoor comfort systems are designed, assembled and repeatedly and thoroughly tested in North America. Using only reliable components and proven technology, we build quality into our products at every step of the manufacturing process.

Con: No Temperature Zoning Forced air systems use one thermostat to control the heat in every room of a home. This central temperature control may be inconvenient if you want one room to feel warmer than the others. Increasing the temperature on your thermostat to heat that one room will also heat the entire house.

Common Causes of an Air Conditioner Blowing Warm or Hot Air These can be due to clogging issues, electrical problems, low refrigerant, evaporator coil malfunctions, or compressor problems. If you've ever had the ac system in your car stop functioning, it's often due to a refrigerant leak or dirty coil.

Forced-air furnaces are extremely efficient. Furnaces have a high AFUE rating around 78-84%. AFUE rating stands for “Annual Fuel Utilization Efficiency.” The higher the AFUE percentage the more heat the furnace can deliver relative to the amount of fuel consumed.