Q: What is SEER?
A: SEER stands for seasonal energy efficiency ratio, or the cooling energy output of an air conditioner divided by the electrical energy it burns. The higher the number, the more efficient the equipment. For example, a new 15 SEER unit uses 33 percent less energy than an older 10 SEER model. All systems sold in the United States must have a minimum SEER of 13 or 14 depending on the region. The most efficient units have SEERs of 20 or more.