picture of a man lowering his heating bill by learning about AFUE

Furnace Service, AFUE and What They Mean for You in Hattiesburg

Strange temperature changes and the hope of early spring can keep us holding out as we wait until the end of the winter season. With the unpredictable weather this time of year, it’s important to make sure that your furnace service is done and that your furnace is prepared for any weather swing. Part of owning and operating a furnace is understanding the system and knowing when it might require repair or maintenance. A furnace’s AFUE (Annual Furnace Utilization Efficiency) is an important measurement to know and can inform you what kind of efficiency you can expect from your system. If you are unsure of your AFUE, this percentage can be clarified at your next furnace tune-up appointment from one of our professionals at Oak Grove Heating & Air Conditioning.

So, what does this AFUE rating indicate for you? What kinds of things should you take into account with AFUE?


  • The older your furnace is, the smaller its AFUE will also be. This means less energy efficiency compared to a new furnace every winter when your system is in use.
  • Compare your AFUE percentage proportionate to money – if your AFUE is 75%, that means that for every $100 you devote to heating your home, only $75 is being used to heat your home.

Taking into account the age of your furnace and the possibility of overspending on your heating costs has hopefully offered some perception into the significance of your furnace’s AFUE. There are many things that go into picking a new furnace or remaining with your furnace service plan. Over time still, smaller efficiency levels can significantly influence your energy usage, monthly bills and ease. Don’t disregard the AFUE rating of your furnace and consider it when deciding whether it’s time for furnace replacement.

If you have any further uncertainties about furnaces, or you just want some help verifying the AFUE rating of your present furnace, give our professionals at Oak Grove Heating & Air Conditioning a call at 601-268-3486 or set up an appointment with us online.