This is a measurement of a gas furnace's efficiency in converting fuel to energy, by projecting the average thermal efficiency for a complete heating season.
A higher AFUE rating means greater energy efficiency. 80% AFUE = 20% escapes home.
Because electric furnaces don’t utilize combustion to generate heat, these units typically have AFUE ratings above 90 percent. However, since electricity generally costs substantially more than gas, a gas-fired furnace with a lower AFUE is usually the more cost-efficient choice.
Furnace efficiency is expressed by factors other than the AFUE rating. The furnace blower fan's electrical consumption isn’t included when calculating the rating. Yet, it makes a substantial contribution to furnace operating cost.
Optional variable-speed ECM blowers that reduce electricity use as much as 75 percent less also help reduce utility expenses.Click HERE for an Instant Estimate
For more information or installation, call Harmonic @ 630-999-9008 to set your appointment today.