Question: How high a SEER does one have to reach to be assured of getting a scroll compressor that will work with Powerwalls?
Long Story.
We have supposedly "EPA Energy Star" HVAC units, but it's turned out that our HVAC contractor (and the builder) can lie as long as the day is long so we'll have to check the AHRI website to know for sure:
www.ahridirectory.org
Examples of just how badly we've been robbed:
1. Submitted and city-approved building plans called for 8 tons of cooling capacity. They installed 6 tons. (We actually have it better than some; a neighbor's city-approved plans require 9 tons; she also got 6 tons.)
2. Swapped the locations of the air handlers--5-ton unit where the 3-ton is supposed to be, and vice-versa. (But they actually installed 4- and 2-ton units. Perhaps the HVAC installer had a boat payment coming due?)
3. Ducting plans: thrown out the window. With the swap of the air handlers, the Manual D Ducting Plan they submitted for approval was ignored; they seemingly made up the ducting plan up as they went along, or so it appears. And there are missing returns and registers as well.
4. Furnace constantly "short cycles" since it has far too little airflow; safety overheat system kicks it off-line as temps exceed 160F just aft of the plenum . . .
5. Is anyone surprised that the HVAC systems can't cool the home properly? Yes! The builder (and HVAC contractor, both scum) report that it's
our fault we have all these issues. They're all due to the Nest Thermostats we installed(!) and because of our insufficient window coverings and lack of furniture! (The home remains vacant because it's uninhabitable: too friggin' hot, and it turns out the trusses are "fake" as what's installed doesn't match the PE-stamped paperwork Oooops. The City of Phoenix is on a recorded telcon advising that the "home should never have passed inspection." So it also has a fraudulent Cert of Occupancy, but they won't help us in any way. Nor will they visit any other home in the neighborhood to inspect theirs now either, despite promising to do so.)
It's been an ongoing 3-year nightmare with an expensive, brand new home, but we've had verbal estimates of some $40k to rip out these incorrect systems and install the proper equipment. If we have to do that, we may as well get units that will work with Powerwalls . . . .
Long Story Complete.