The Thermafit Air-Source Modular Multipipe heat pump uses R-454B as the refrigerant and has a size of 30 tons. The manufacturer said the system act as a chiller to cool the building, as a heat pump to ...
South Korea-based heating solutions provider Navien has released a new air-source heat pump for residential applications. “The new Navien PEM750 is packed with smart tech that drives down ...
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