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

Strange temperature changes and the hope of early spring can keep us holding out as we wait until the end of winter. With the erratic weather this time of year, it’s crucial to make sure that your furnace service is taken care of and that your furnace is ready for any weather shift. Part of owning and operating a furnace is being familiar with the system and understanding when it might need repair or maintenance. A furnace’s AFUE (Annual Furnace Utilization Efficiency) is a central measurement to note and can inform 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 specialists at B & B 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 littler its AFUE will also be. This means reduced energy efficiency than with a new furnace in the winter when your system is in use.
  • Think about 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 taken to heat your home.

Considering the age of your furnace and the possibility of overspending on your heating costs has hopefully given some insight into the weight of your furnace’s AFUE. There are many factors that go into picking a new furnace or remaining with your furnace service plan. Over time however, lower efficiency levels can radically impact your energy usage, monthly bills and coziness. Don’t disregard the AFUE rating of your furnace and consider it when determining 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 specialists at B & B Heating & Cooling a call at 314-838-9800 or set up an appointment with us online.