RKM Heating and Air Conditioning Blog: Posts Tagged ‘minimum efficiency rating’

What AFUE Rating Is Best for My Furnace?

Monday, November 14th, 2022

Did you know that California has new furnace requirements when it comes to minimum efficiency? If you have an existing unit, it’s OK. But when it comes time to invest in a new furnace, your options will all be higher efficiency, meaning that they use less energy than previous furnace models. 

The new California furnace requirements are a minimum efficiency rating of 78%. Anything above this threshold is considered good, but keep in mind that for your furnace to be ENERGY STAR certified it must have an AFUE rating of at least 85-90%. Why is this important for you as a California resident? Well, California energy costs tend to be higher than the national average. Keep reading to learn more about AFUE ratings are so important when choosing a new furnace. 

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