How AFUE affects your bill

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

Strange temperature changes and the hope of early spring can keep us holding out as we wait until the end of the cold season. With the unpredictable weather this time of year, it’s important to ensure that your furnace service is taken care of and that your furnace is set for any weather change. Part of having and using a furnace is understanding 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 inform you what kind of effectiveness you can look for 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 Northglenn Heating & Air Conditioning, Inc..

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


  • The older your furnace is, the lower its AFUE will also be. This means reduced energy efficiency paralleled to a new furnace every 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 use heating your home, only $75 is spent to heat your home.

Taking into account the age of your furnace and the likelihood of overspending on your heating costs has hopefully provided some understanding 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 still, smaller efficiency levels can radically effect your energy usage, monthly bills and comfort. Don’t ignore the AFUE rating of your furnace and think of it when determining whether it’s time for furnace replacement.

If you have any further uncertainties about furnaces, or you just want some help determining the AFUE rating of your current furnace, give our experts at Northglenn Heating & Air Conditioning, Inc. a call at 303-452-4146 or arrange an appointment with us online.