Ten years ago, we got solar panels and a heat pump that uses a geothermal heat source (four 95m deep wells in granite). This combo is just so amazing! So effective, so silent, so clean, and my Raspberry Pi switches the heat pump according to solar input, I love it!
The heat pump was 10k€ ten years ago and it is still 10k€ today. Zero inflation. Doesn't get any better.
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