The critical problem they’re trying to solve is the spark gap — the premium that is charged for a joule of electricity vs a joule of gas, which exists because the marginal generation today is provided by operating a gas-burning turbine. Making heat pumps cheaper, both at installation time and for operations, is key for mass adoption, which is necessary if we’re going to stop burning fossil fuels.
Was wondering why this isn’t a thing. Have far more efficient heating until absolutely fucking cold, then oh gosh now it happens to be as efficient as baseboard heating. Instead of NOT WORKING AT ALL.