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

December 31, 2015

Interesting temperature changes and the expectation of early spring can mess with us as we wait until the end of the winter season. With the erratic weather this time of year, it’s important to make sure that your furnace service is complete and that your furnace is set for any weather swing. Part of possessing and operating a furnace is knowing the system and understanding when it might call for repair or maintenance. A furnace’s AFUE (Annual Furnace Utilization Efficiency) is a central measurement to know and can disclose to you what kind of productivity you can expect from your system. If you are unsure of your AFUE, this percentage can be determined at your next furnace tune-up appointment from one of our experts at Faust Air Conditioning and Heating.

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


  • The older your furnace is, the smaller 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.
  • Think about your AFUE percentage with regard to money – if your AFUE is 75%, that means that for every $100 you use heating your home, only $75 is spent to heat your home.

Bearing in mind the age of your furnace and the possibility of overspending on your heating costs has hopefully offered some insight into the weight of your furnace’s AFUE. There are many factors that go into choosing a new furnace or remaining with your furnace service plan. Over time however, decreased efficiency levels can radically effect your energy usage, monthly bills and comfort. Don’t overlook the AFUE rating of your furnace and consider it when choosing whether it’s time for furnace replacement.

If you have any further questions about furnaces, or you just want some help verifying the AFUE rating of your current furnace, give our professionals at Faust Air Conditioning and Heating a call at 979-323-6130.