SER™ (System Efficiency Ratio) is a standard in the air conditioning and heating industry which is an efficiency rating of your installed system, including the effects of the ducting and the construction of your home.
To test for your rating, an NCI certified contractor will find the ratio of actual heating or cooling delivery compared to what it was when the manufacturer tested the device. You can raise your SER rating by maintaining your duct system. The duct system plays an important part in determining your system’s efficiency.
To read more about SER ratings, read about them in Wighton’s, Inc.’s Information Library.