Being in the Heating and Cooling industry one of the questions we receive a lot is, what is a good SEER rating?
If you are unfamiliar with SEER, it is the Air Conditioning Industries way for rating the efficiency of their units. It stands for Seasonal Energy Efficiency Ratio. A SEER rating is the ratio of the cooling output of an air conditioner over a typical cooling season, divided by the energy it consumed in Watt-Hours.
In the state of Kentucky, all new residential HVAC systems must have a minimum rating of 14 SEER. HVAC systems with an Energy Star rating must have a SEER rating of at least 15 SEER.
The higher the SEER rating of the system, the more energy efficient it is. For instance, a 10 SEER unit is far less efficient than an 18 SEER unit, a whopping 44% less to be exact. So to answer the question, the higher SEER the unit, the better results you will see. You may spend a little more on purchasing a higher SEER system, but will save money on energy expenses for years to come.