One thing I haven't been able to figure - I have a flat in Spain with a combined aircon heat system costing ~$3k which functions from the physics point of view as a heat pump but was not marketed as a "heat pump" which I think are supposed to be more expensive. Is there any difference between heat/cool aircon and heat pumps?
A heat pump is a reversable air conditioner so every heat / cool air conditioner is a heat pump regardless of name. Interesting that they cost more over yonder though if you use the name. We can get a heat pump here in the US for about 700$.
I installed one in the basement 2 years ago and it has been a gamechanger.
