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

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

Strange temperature changes and the desire for early spring can keep us holding out as we wait until the end of winter. With the erratic weather this time of year, it’s vital to make sure that your furnace service is taken care of and that your furnace is set for any weather change. Part of possessing and operating a furnace is knowing the system and knowing when it might need repair or maintenance. A furnace’s AFUE (Annual Furnace Utilization Efficiency) is an important measurement to recognize and can tell you what kind of efficiency you can look for from your system. If you are not informed of your AFUE, this percentage can be verified at your next furnace service appointment from one of our professionals at Dial One Mears Air Conditioning & Heating Inc.

So, what does this AFUE rating indicate for you? What sorts of things should you consider with AFUE?


  • The older your furnace is, the littler its AFUE will also be. This means not as much energy efficiency than with a new furnace in the winter when your system is in use.
  • Compare your AFUE percentage in relation 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 potential of overspending on your heating costs has hopefully given some perception into the significance of your furnace’s AFUE. There are many things that go into choosing a new furnace or remaining with your furnace service plan. Over time still, lower efficiency levels can radically impact your energy usage, monthly bills and comfort. Don’t overlook the AFUE rating of your furnace and consider it when deciding whether it’s time for furnace replacement.

If you have any further questions about furnaces, or you just want some help determining the AFUE rating of your existing furnace, give our specialists at Dial One Mears Air Conditioning & Heating Inc a call at 602-997-5701 or schedule an appointment with us online.