Understanding AC Unit Efficiency Ratings

Shopping for a new air conditioning unit without having the knowledge and familiarity with air conditioner ratings is like going for a hike barefoot. You won’t get very far or make a lot of progress. Air conditioner efficiency ratings show the cooling efficiency of said air conditioning system and having that knowledge will help you get the right AC unit for your Charleston, SC home.
SEER Rating
First off, let’s talk about what SEER means. SEER stands for Seasonal Energy Efficiency Ratio and it’s the main efficiency rating applied to air conditioning units. The SEER rating on an AC unit can range from 13 to 25 in the United States and it’s calculated by dividing cooling output by the electrical power that goes into the equipment. The higher the number, the more efficient the air conditioner is.
What Does SEER Rating Mean for Air Conditioners?
Like we mentioned above, the higher the SEER rating, the more efficient an air conditioner is. The higher efficiency does cost money but with incremental increases in SEER amounting to hundreds of dollars. A homeowner shopping for a new air conditioner for their Charleston, SC home should consider how much use they expect to get out of their new cooling system. A family that runs that AC unit constantly and is hoping to live in the same home for the foreseeable future should consider investing in a high-SEER air conditioner. Over time, the lower operating costs that come with energy efficient AC units will pay for the extra upfront cost. If you aren’t planning in staying in the same home for more than a few years is probably okay with a lower SEER rating system.
If you’re interested in learning more about some of the air conditioners we carry and install here at Terrace Heating & Air, check out our air conditioner page or give our Charleston, SC office a call today! Remember that it’s always important to consult with your trusted HVAC contractor before deciding on a replacement air conditioning unit.


