Why wouldnt they be? Its vastly superior technology in almost every aspect.

Why wouldn’t they be?

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In other news, single tap is better than 2 taps

In Sweden, heat pumps are the standard for new housing and a LOT of older houses get converted. It’s totally normal. Either geothermal, exhaust air, air/water or air/air, almost all smaller houses have one of them. The exhaust air one is especially interesting becouse it’s also a ventilation system. Being cheaper than geothermal, many house builders go for them.