In the fall/winter in northern areas it’s free! (Money that would already be spent on heating).
Summer is a negative though, as air conditioning needs to keep up. But the additional cost is ~1/3rd the heat output for most ACs (100w of heat require < 30w of refrigeration losses to move)
In the fall/winter in northern areas it’s free! (Money that would already be spent on heating).
Summer is a negative though, as air conditioning needs to keep up. But the additional cost is ~1/3rd the heat output for most ACs (100w of heat require < 30w of refrigeration losses to move)