How AFUE affects your bill

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

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 erratic weather this time of year, it’s important to double check 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 need repair or maintenance. A furnace’s AFUE (Annual Furnace Utilization Efficiency) is an important measurement to know and can inform you what kind of productivity you can anticipate from your system. If you are unaware of your AFUE, this percentage can be determined at your next furnace tune-up appointment from one of our specialists at Clean Air HVAC.

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


  • The older your furnace is, the littler its AFUE will also be. This means less energy efficiency than with a new furnace each winter when your system is in use.
  • Consider your AFUE percentage with regard 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.

Bearing in mind the age of your furnace and the possibility of overspending on your heating costs has hopefully given some insight into the significance of your furnace’s AFUE. There are many factors that go into selecting a new furnace or staying in your furnace service plan. Over time however, lower efficiency levels can drastically effect your energy usage, monthly bills and coziness. Don’t ignore the AFUE rating of your furnace and think of it when deciding whether it’s time for furnace replacement.

If you have any further uncertainties about furnaces, or you just want some help finding the AFUE rating of your current furnace, give our professionals at Clean Air HVAC a call at 925-689-7017 or schedule an appointment with us online.