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

Strange temperature changes and the desire for early spring can mess with us as we wait until the end of winter. With the unpredictable weather this time of year, it’s vital to double check that your furnace service is done and that your furnace is set for any weather swing. Part of having and operating a furnace is being familiar with 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 know and can disclose to you what kind of effectiveness you can look for from your system. If you are unaware of your AFUE, this percentage can be verified at your next furnace service appointment from one of our experts at Service Plus Mechanical.

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


  • The older your furnace is, the smaller its AFUE will also be. This means not as much energy efficiency paralleled to a new furnace in the 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 spend on heating your home, only $75 is taken to heat your home.

Bearing in mind the age of your furnace and the possibility of overspending on your heating costs has hopefully given some perception into the significance of your furnace’s AFUE. There are many things that go into picking a new furnace or staying in your furnace service plan. Over time though, smaller efficiency levels can radically effect your energy usage, monthly bills and comfort. Don’t disregard the AFUE rating of your furnace and consider 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 Service Plus Mechanical a call at 630-809-6319 or arrange an appointment with us online.