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About r290 propane heat pump

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In a dry system, this heat is circulated as heat air as a result of ducts and vents. Air-to-air heat pumps can flow into both warm or chilly air. Air source heat pumps use the same sort of know-how that retains a fridge or freezer cool – but in reverse. https://sites2000.com/story10196645/r290-propane-heat-pump-things-to-know-before-you-buy

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