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Air source heat pump for Dummies

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Employs electronic expansion valve to precisely control the stream of R290 refrigerant in to the evaporator as well as a 4-way valve to divert the refrigerant flow for your defrost operation An air-to air process could be made to transfer heat in both direction, to heat the interior of the https://bookmarkcolumn.com/story20256339/5-essential-elements-for-r290-air-source-heat-pump

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