Lennox Residential HVAC has launched an extreme cold climate ... and the SL22KLV is a souped up version of the unit developed for that challenge. The heat pump, which pairs with a smart thermostat ...
The company says that its new SL22KLV heat pump system can supply heat in temperatures as low as -28.9 C. It uses R-454B as the refrigerant and has a size ranging from 2 tons to 5 tons.
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