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The new heat pumps use R-454B as a refrigerant and are specifically designed to pair with Johnson Controls residential gas furnaces. Its size ranges between 1.5 and 5 tons and its coefficient of perfo ......
Scientists have proposed to use PV energy and heat pump-driven HVAC system in greenhouses conceived to grow tomatoes in the Mediterranean area. The system was found to have a payback time of only 2.9 ......