How AFUE affects your bill

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

Interesting temperature changes and the desire for 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 make sure that your furnace service is complete and that your furnace is ready for any weather change. Part of having and utilizing a furnace is being familiar with the system and preparing for when it might require 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 not informed of your AFUE, this percentage can be determined at your next furnace maintenance appointment from one of our specialists at KDM Service Corporation.

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


  • The older your furnace is, the lower its AFUE will also be. This means less energy efficiency paralleled to a new furnace every winter when your system is in use.
  • Consider your AFUE percentage proportionate to money – if your AFUE is 75%, that means that for every $100 you spend on heating your home, only $75 is being used to heat your home.

Considering the age of your furnace and the potential of overspending on your heating costs has hopefully provided some understanding into the significance 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 though, decreased efficiency levels can drastically impact your energy usage, monthly bills and coziness. Don’t overlook the AFUE rating of your furnace and reflect on it when choosing whether it’s time for furnace replacement.

If you have any further inquiries about furnaces, or you just want some help finding the AFUE rating of your existing furnace, give our specialists at KDM Service Corporation a call at 205-758-2703 or arrange an appointment with us online.