Good to know the 2-3 kW on normal drive for cold heat. I have a heat pump as a part of my home's complex heating system (using a Heat pump where it can hit -30 or -40 deg is not a common heating situation and has to be part of a gas back up and electric assist unit that works with Heat Pump. ) Heat pump works well, saves money over the year but below 0 deg F, the HP is at a COP (cooefficient of performance rating) of 1, so no gain over straight resistive heat. At 30 deg f, the COP is closer to 3 (300%) and warmer the air, the higher COP, as high as 4 to 5 at 60 deg F on new Heat Pumps. In a car, don't know if that high, but at 30deg, might use 1/3 the energy as resistive. BUT, at 30, not a problem with dist on old X, its under 20deg f.
The unknown for me is how the octovalve helps car overall efficiency. Sounds like it has 15 modes and can move waste heat from batt, motors and HP as needed to passengers or battery as needed. Sounds impressive and can only help over the old X. I do miss that. But don't know yet how much it will help at 0 deg F and if it would be enough for my 'impossible drive'
The Efficiency of the heat pump has a lot to do with the physical size of the device. The pump you have at your house is not quite the same as the ones you find in the cars due to the size limitations..