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

Furnace Service, AFUE and What They Mean for You in Shelby Township

Strange temperature changes and the hope of early spring can mess with us as we wait until the end of the winter season. With the random weather this time of year, it’s important to ensure that your furnace service is complete and that your furnace is set for any weather swing. Part of owning and utilizing a furnace is being familiar with the system and understanding when it might call for repair or maintenance. A furnace’s AFUE (Annual Furnace Utilization Efficiency) is an important measurement to recognize and can disclose to you what kind of effectiveness you can anticipate from your system. If you are unsure of your AFUE, this percentage can be verified at your next furnace maintenance appointment from one of our professionals at Mr. Air Repair .

So, what does this AFUE rating suggest for you? What types of things should you think on 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 each winter when your system is in use.
  • Think about your AFUE percentage proportionate to money – if your AFUE is 75%, that means that for every $100 you use heating your home, only $75 is being used to heat your home.

Bearing in mind the age of your furnace and the likelihood of overspending on your heating costs has hopefully provided some perception into the weight of your furnace’s AFUE. There are many things that go into selecting a new furnace or sticking to your furnace service plan. Over time still, decreased efficiency levels can radically influence your energy usage, monthly bills and ease. Don’t disregard the AFUE rating of your furnace and think of it when determining 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 present furnace, give our specialists at Mr. Air Repair a call at 586-262-4258 or set up an appointment with us online.