How AFUE affects your bill

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

Curious temperature changes and the desire for early spring can let us down as we wait until the end of the winter season. With the random weather this time of year, it’s vital to double check that your furnace service is done and that your furnace is set for any weather swing. Part of having and operating a furnace is knowing the system and preparing for when it might call for repair or maintenance. A furnace’s AFUE (Annual Furnace Utilization Efficiency) is an important measurement to recognize and can tell you what kind of effectiveness you can look for from your system. If you are not informed of your AFUE, this percentage can be clarified at your next furnace tune-up appointment from one of our professionals at Tokay Heating and Air Conditioning.

So, what does this AFUE rating suggest for you? What sorts of things should you think on with AFUE?


  • The older your furnace is, the smaller its AFUE will also be. This means not as much energy efficiency paralleled to a new furnace each winter when your system is in use.
  • Consider 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 importance of your furnace’s AFUE. There are many elements that go into picking a new furnace or staying in your furnace service plan. Over time however, decreased efficiency levels can significantly effect your energy usage, monthly bills and ease. Don’t overlook the AFUE rating of your furnace and consider it when determining whether it’s time for furnace replacement.

If you have any further inquiries about furnaces, or you just want some help determining the AFUE rating of your present furnace, give our experts at Tokay Heating and Air Conditioning a call at 209-368-0556 or schedule an appointment with us online.