HVAC Efficiency Ratings Explained

HVAC Efficiency Ratings Explained

Check out this brief guide explaining what all those HVAC acronyms mean!

Buying a new heating and cooling system can be a daunting task, especially when faced with all those acronyms. SEER, HSPF, COP, and other ratings can puzzle any homeowner looking to get the best product out there. Thankfully, this handy guide can help you know a great HVAC appliance when you see one.


The Seasonal Energy Efficiency Ratio measures how much cooling power comes out of how much electrical power during the cooling season. The more cool air you can get from a specific unit of energy (measured in BTU, or British Thermal Units,) the more efficient the machine is. A decent rating for a Maryland home is 14 SEER.


An Energy Efficiency Ratio is similar to a SEER rating, except that it specifies efficiency at the machine’s highest capacity. It marks how well the air conditioner performs under the hottest and most humid conditions. This rating may not match up to its SEER rating, so it is best to look at both.


The AFUE (Average Fuel Utilization Efficiency) measures the efficiency of oil and gas furnaces in percentages. It shows how much heating goes into the house versus how much gets lost out of the flue. For example, if 90% of your fuel gets used, you have a good deal.


If you are looking for a new heat pump, you will know how well it performs by its HSPF (Heating Seasonal Performance Factor.) In particular, this rating measures its heating efficiency. Decent ratings fall between 7.7 to 13.


The Coefficient of Performance is the thermal power divided by the electrical power of geothermal heat pumps, other heat pumps, and air conditioners. It shows how well an appliance transfers heat at any point in time on a scale of around 1 to 4.

Energy Star

An Energy Star rating is what the Environmental Protection Agency recommends for any given HVAC unit. The appliances have to comply with certain requirements for it to have an Energy Star. As a result, a heat pump needs to have an HSPF of 8.2, and an air conditioner must be SEER 14 to qualify.


If you are concerned about high electricity bills in the winter, consider investing in geothermal heat pumps to help alleviate some of those costs. With many experienced technicians available, Ground Loop Heating & Air Conditioning, Inc. can solve all your air conditioning system problems. If you are interested in creating the most comfortable environment for your family to enjoy, contact Ground Loop Heating & Air Conditioning, Inc.today.

You can reach us at 410-836-1706, or visit our website for more information! If you are interested in more information about geothermal heating and cooling systems, check us out on Twitter, YouTube, Facebook, and LinkedIn.

This entry was posted on Wednesday, June 17th, 2020 at 9:59 am. Both comments and pings are currently closed.

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