- de- + superheater (Wiktionary)
“Using a home's existing ductwork will cut the cost to $10 per square foot, and spending an additional $3,000 for a desuperheater a device that channels heat to produce hot water and a storage tank will provide hot water for an entire home.”
“Then a desuperheater uses excess heat from the pump to heat water for showers, laundry or dish-washing.”
“a desuperheater (a device that channels heat to produce hot water) and”
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