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

December 31, 2015

Curious temperature changes and the expectation of early spring can mess with us as we wait until the end of the cold season. With the unpredictable weather this time of year, it’s crucial to make sure that your furnace service is complete and that your furnace is prepared for any weather change. Part of owning and using a furnace is knowing the system and preparing for when it might require repair or maintenance. A furnace’s AFUE (Annual Furnace Utilization Efficiency) is an important measurement to recognize and can tell you what kind of productivity you can expect from your system. If you are unsure of your AFUE, this percentage can be verified at your next furnace tune-up appointment from one of our experts at Clean Air HVAC.

So, what does this AFUE rating mean for you? What sorts of things should you think on with AFUE?


  • The older your furnace is, the smaller 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 in relation to money – if your AFUE is 75%, that means that for every $100 you use heating your home, only $75 is spent to heat your home.

Taking into account the age of your furnace and the likelihood of overspending on your heating costs has hopefully given some perception into the importance of your furnace’s AFUE. There are many elements that go into picking a new furnace or staying in your furnace service plan. Over time however, smaller efficiency levels can radically influence your energy usage, monthly bills and comfort. Don’t disregard the AFUE rating of your furnace and consider it when deciding whether it’s time for furnace replacement.

If you have any further questions about furnaces, or you just want some help finding the AFUE rating of your present furnace, give our professionals at Clean Air HVAC a call at 925-233-6238.