Warm and hot wastewater flushed from homes and businesses is a significant source of energy. The U.S. Department of Energy estimates that 350 billion kilowatt-hours of heat energy are flushed down the drains in the United States every year—roughly enough to power 30 million homes.
Through this technology, heat energy from wastewater is captured in an underground holding tank and transferred to a heat exchanger, which allows a heat pump to extract that energy and transport it to a connected building's heating or cooling system.
Repurposing this otherwise wasted heat energy resource is another way building owners can meet sustainability goals and positively contribute to climate action.
Sewer heat recovery is a sustainable energy solution that reduces onsite fossil fuel combustion, lowers carbon emissions, and decreases a building’s carbon footprint in facilities that use hydronic (circulating water) systems for heating or cooling.