It is a deceptive practice to install high SEER matched equipment that may be getting only a half to two thirds of its SEER rating and listed capacity ratings.
I am not overstating the situation, research surveys have revealed the magnitude of this problematic situation!
With the help of the mfg’ers there are simple formulas that will reveal if the system is performing within the proper perimeters of its capacity ratings.
It is time that we showed documented evidence of delivered "Best Practices" toward servicing that proves what their unit is delivering and what it should be producing within 5 or 10 percent. The owner can use a mercury thermometer and a hygrometer to get the %RH and then use several simple formulas to reveal approximately what Btu/hr that their system is delivering under varying conditions (along with the approximate CFM air flow). I found different unit specs for the Btu/hr formula results; use the revised (ballpark) figure results for the 12-SEER Comfortmaker and Heil condensers!
Wait until the (search found), "New Technology" pdf downloads completely, before clicking on it!
I wonder what it costs? I hope contractors will test equipment capacity before and after servicing to demonstrate with documentation the improvement level they have achieved, and what may be necessary to achieve even higher levels of efficient operation.
Electric rates will probably go higher, especially if NG generated!
- udarrell - Darrell