Heat Pumps

[Clamps]

Can a heat pump for the Kona be purchased in Canada and installed in a US model? I understand that this may be a naive question but just curious as I live in the northeast and would like to know if this is possible.

 

[ericy]

Short answer is no.

 

[KiwiME]

That's the long answer as well

 

[hobbit]

I wonder if the heat-pump system uses the same compressor. It almost
certainly could, the real difference is surrounding plumbing and control
algorithms.

_H*

 

[ericy]

I wonder if the heat-pump system uses the same compressor. It almost
certainly could, the real difference is surrounding plumbing and control
algorithms.

That's the thing I don't quite get - they couldn't be saving all that much money by giving us AC only. And in more moderate climates the heat pump can be quite effective. So why did they do that?

 

[KiwiME]

I expect it's the same compressor as it wouldn't really know or care how it's plumbed. As for cost, I think there are a few pricey parts including both a condenser and evaporator in the HVAC air path, as it needs both to dehumidify. It has also been mentioned by others that the PTC heater may remain as a low-temp backup, so that savings may not be there. I can't confirm that but do note that the power cable is present (orange cable in the photo).

 

[electriceddy]

I expect it's the same compressor as it wouldn't really know or care how it's plumbed. As for cost, I think there are a few pricey parts including both a condenser and evaporator in the HVAC air path, as it needs both to dehumidify. It has also been mentioned by others that the PTC heater may remain as a low-temp backup, so that savings may not be there. I can't confirm that but do note that the power cable is present (orange cable in the photo).

View attachment 8658 View attachment 8659

Weird system, but it sure works great; saves a pile of energy as well as doing the job (cooling or heating) quietly .
My only complaint is having to push the A/C button off (I use auto) when start heating (unless its super humid out), but I am used to that now.

 

[ericy]

I expect it's the same compressor as it wouldn't really know or care how it's plumbed. As for cost, I think there are a few pricey parts including both a condenser and evaporator in the HVAC air path, as it needs both to dehumidify. It has also been mentioned by others that the PTC heater may remain as a low-temp backup, so that savings may not be there. I can't confirm that but do note that the power cable is present (orange cable in the photo).

I suppose one way to know for sure is look up the part numbers and see whether there are a different ones for the heat pump option. Navigating the parts stores is challenging, but I see this part 97205-K4000, which is discontinued, and is described as "With electric motor, without inner condenser". You can get part 97205-K4010, which is described as "With electric motor, with inner condenser.". These things aren't cheap, either. But it sort of seems like this might be the difference.

Sort of the same thing with the battery warmer - Hobbit had some pictures suggesting that the control circuit is in the battery pack itself, and that got me wondering if there was a different part number for the battery packs with and without the control circuits for the warmer.

I expect the PTC heater must always be there - our Canadian cousins can get temperatures cold enough that it would be pointless to try and use the heat pump. The irony is that with our temperatures, they could do away with the PTC heater altogether and replace it with the heat pump, and they went the opposite direction.