Unless the heat mode uses a resistive strip (which I doubt unless your unit is 240v) instead of using the reefer cycle in reverse, heating should be more efficient than AC is. Do you know how it works? (probably in the manual). Do you know the model number? I kind of wanted one for a shed if they made them dual.
How it works is not in the manual but it does have heat, turn it on, and took about 10 minutes to switch over, it blows lukewarm air, max temp setting is 86 Deg F
Model.is the one on the first post I think it’s the 10k or 12k not too sure about the 8k ones
And yes it uses reversing valves
******* ok the one linked in the Costco u-shape
does not have heat mode, the one I post also Medea non u-shape one does which is the one in the screen. Will get you the model later. It’s not in the apps
I have both , that probably confused me