How AFUE affects your bill

Furnace Service, AFUE and What They Mean for You in Liberty and the Kansas City Metro Area

Strange temperature changes and the hope of early spring can let us down as we wait until the end of the winter season. With the erratic weather this time of year, it’s vital to make sure that your furnace service is taken care of and that your furnace is prepared for any weather shift. Part of owning and using a furnace is understanding the system and knowing when it might need 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 efficiency you can look for from your system. If you are unsure of your AFUE, this percentage can be verified at your next furnace service appointment from one of our specialists at Air Unlimited Heating & Cooling.

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 smaller its AFUE will also be. This means not as much energy efficiency than with a new furnace in the winter when your system is in use.
  • Compare your AFUE percentage in relation 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.

Bearing in mind the age of your furnace and the likelihood of overspending on your heating costs has hopefully provided some understanding into the significance of your furnace’s AFUE. There are many elements that go into choosing a new furnace or sticking to your furnace service plan. Over time still, smaller efficiency levels can radically effect your energy usage, monthly bills and coziness. Don’t disregard the AFUE rating of your furnace and reflect on it when choosing 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 existing furnace, give our specialists at Air Unlimited Heating & Cooling a call at 816-286-7258 or set up an appointment with us online.