Most ground source heat pumps (GSHP) use simple 1-stage or 2-stage compressors and typical 24V thermostats/controls. Any of these could participate through a “smart” thermostat VPP…no need for it to be a specific VPP for GSHP

What’s a “sedan”?😉

Hatchbacks 4EVr

Also, no…none are sedans

FWIW, GM has 5 or 6 cars that can do V2H, including the relatively low-priced Equinox…and likely, later this year, the still-lower-priced Bolt re-vamp.

Yeah…that Energy Star page is confusing…but that’s what we get when whoever wrote the tax credit language in 2022 very intentionally assigned responsibility for the efficiency level required for the tax credit to a non-gov’t org (CEE), rather than just refer to Energy Star

Side note: Energy Star is *not* a requirement for the tax credit

I don't think she can get the tax credit, since it's a rental. Perhaps it's a grey area if she also lives in the building.

See the "Who Qualifies" section here: www.irs.gov/credits-dedu...

Caveat: this would only apply to heat pumps with variable speed compressors. Generally, almost all ductless heat pump systems have variable speed compressors...but the vast majority of heat pumps installed in the US are ducted, and are single speed with no ability to modulate output/efficiency.

36,000Btu/hr for how many hours is the question...

The controls will likely allow DHW to take priority over cooling. With a buffer tank for chilled water, and a reasonably high capacity thermal storage for DHW, it could be pretty seamless for many households. Smart controls would make it even better.

Thermodynamics doesn't really see eye to eye with "where there's a will there's a way"!

15,000Btu/hr is 15,000Btu/hr...though I'm sure Harvest boosts that temporarily with thermal storage

100%

Clean Technica and PV Mag Int’l reprint press release content all the time without investigation. They are not good benchmarks of quality.

What make/model # do you have? There might be a setting that could be adjusted…

The vast majority of heat pumps will turn on automatically in their previous mode/setting after power outage. Your minisplit is an outlier.

Home furnaces require electricity

For ducted central AC (as well as central heat pumps), the federal rules already changed for units with a Jan. 1 2023 manufacture date or later. Can't roll that back.

I think DOE is supposed to revisit the rules every 6 years