Generator_Spring 2023_Final

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UNDERSTANDING HEAT PUMPS At its core, a heat pump transfers heat by relying on the principle that energy fl ows from HOT to COLD. This technology is already in refrigerators, cars, and other appliances. HEAT PUMPS WORK BY evaporating, compressing and expanding heat. AIR SOURCE HEAT PUMP Air source heat pumps are the most common type of heat pump. They use an outdoor fan to move air through coils that evaporate the heat into a refrigerant. An indoor compressor adds pressure to the refrigerant, raising its temperature. An expansion valve then releases the air, cycling hot and cold air to the right place. This type includes both mini-split ductless systems and systems that connect to ductwork, like a central air conditioning system. Modern, enhanced compressors and expansion valves allow for heat pumps to work even in cold climates. 6 | GENERATOR
$ HOW MUCH HOW MUCH ENERGY DO HEAT DO THEY COST? PUMPS USE? Since heat pumps donʻt create heat, they are more energy effi cient than traditional heating and cooling and can produce two to four times as much heat energy as they consume. Just like any heating or cooling system, heat pumps are more effi cient in spaces without air leaks and when properly installed. Consumer Reports reported an average cost of $7,791 for installation or about $1,000 more than the average cost for a gas furnace. Air source pumps rated for colder climates cost more. Geothermal heat pumps are typically the most expensive to install, due to the cost to dig the pipes. Starting in <strong>2023</strong>, the Infl ation Reduction Act authorizes a $2,000 tax credit (and rebates up to $8,000 for income-qualifi ed households). GEOTHERMAL/GROUND SOURCE Although air temperatures above ground change throughout the day and with the seasons, temperatures of the earth 10 feet below ground are consistently between 50°F and 60°F. For most areas of the United States, this means soil temperatures are usually warmer than the air in winter and cooler than the air in summer. Geothermal heat pumps use the earth’s constant temperature to heat and cool buildings. They transfer heat from the ground (or water) into buildings during the winter and reverse the process in the summer. SPRING <strong>2023</strong> | 7
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