Harvest combines both home heat and hot water using a single efficient heat pump.
Harvest is a system that uses a single heat pump to heat water that both heats your home and flows to your hot water taps. It is built on the extremely efficient SANCO2 air-to-water heat pump, which produces hot water and stores it in a large tank. For heating the home, it uses a loop off the tank that runs to a special hydronic air handler that replaces the furnace and connects to the home's ductwork. (It is also compatible with some types of hydronic radiant floor heat.)
It can be a great solution for smaller homes with lower heating needs, especially in milder climates that don't require air conditioning. Because the tank acts as a form of energy storage, the system can be programmed to run at optimal times -- when you're producing rooftop solar, or when electricity rates are last expensive or have the lowest carbon pollution.
The storage capacity should also qualify it for the federal 25D tax credit of 30% of the entire system cost. It can also qualify for additional state and local rebates.
Optional add-ons include a standard air-to-air heat pump to provide cooling and supplemental heat on the coldest days. Although Harvest's control technology is relatively new, the underlying components -- the heat pump water heater and the hydronic air handler -- have been in use for years and have high durability and reliability. In particular, the SANCO2 heat pump water heater uses CO2 as its refrigerant, which is far less harmful for the climate than the high global warming potential refrigerants used in conventional heat pump systems, and it's sealed in the unit at the factory, making it far less likely to escape, and simplifying installation in the home.
Please ask QuitCarbon for a referral if Harvest sounds like a good option for you!