Terms like SEER, AFUE and HSPF are commonly used to describe efficiency ratings in the indoor weather industry. Offering indoor weather equipment that ranges from the minimum industry requirements to the world's most totally energy efficient, your indoor weather expert can help you choose the indoor weather equipment that's right for you.

AFUE - (Annual Fuel Utilization Efficiency) is the standard measurement of efficiency for gas and oil-fired furnaces. Given in percentages, this number tells you how much of your fuel is used to heat your home and how much fuel is simply wasted. The higher the AFUE rating, the greater the efficiency. Carrier offers a full line of furnaces with AFUE ratings ranging from the minimum industry requirement of 78% to more than 96%.

SEER - (Seasonal Energy Efficiency Ratio) is the measure of efficiency by which the cooling process of air conditioners and heat pumps is rated. The higher the SEER number, the greater the efficiency, which translates into greater energy savings. Today, U.S. regulatory agencies require all new models to have a 10.0 SEER rating or better. Carrier's full line of air conditioners offers SEER ratings of 10.0 to 16.1.

HSPF - (Heating Seasonal Performance Factor) is the efficiency measurement used to gauge the efficiency of the heating mode of heat pumps. Again, the higher the number, the greater the efficiency. Today's models are required to have a 6.8 HSPF. Carrier offers heat pumps with HSPF ratings ranging from 6.8 to 9.4.

Bels - Bels-the rating system by which sound is measured. The bels scale is a logarithmic scale like the Richter scale...even a small difference in rating can mean a significant difference in actual sound. The higher the number, the greater the noise level. A diesel truck 10 feet away is rated at 9.2 bels. The sound of a refrigerator running is rated at 7.0 bels. Check out Carrier against the competition. You and your neighbors will be happy to hear the Carrier sound difference.