4 Common Energy Efficiency Ratings are SEER, EER, HSPF and AFUE. Here’s what they mean.

SEER, EER, HSPF & AFUE ratings

1.      Seasonal Energy Efficiency Ratio – SEER Rating

SEER = Seasonal Energy Efficiency Ratio

SEER is used for = Compare the efficiency of different central air conditioning units.

The basic formula is ? (Annual cooling output in the cooling season) ÷ (total energy input in the cooling season)

 

2.      Energy Efficient Ratio – EER Rating

EER= Energy Efficient Ratio

EER rating is used for = Comparing efficiency of room air conditioners.

The basic formula is ? (Total cooling output at a time) ÷ (total energy input at that time period)

 

3.      Heat Seasonal Performance Factor – HSPF Rating

HSPF = Heat Seasonal Performance Factor

HSPF is used for = Comparing efficiency of heat pumps

The basic formula is ? (Total heat output in heating mode) ÷ (total energy input at that time period)

 

4.      Annual Fuel Utilization Efficiency – AFUE Rating

AFUE = Annual Fuel Utilization Efficiency

AFUE is used for = Comparing efficiency of different furnaces, boilers and heaters.

The basic formula is ? (Total heat output) ÷ (total fuel energy)

 

Read the whole article here – Understanding Energy Efficiency Ratings Of Heating and Air Conditioning or Cooling Systems – SEER, EER, HSPF & AFUE