WaterFurnace

WaterFurnace, headquartered in Fort Wayne, Indiana, has spent over four decades perfecting geothermal heating and cooling technology. As a manufacturer specializing exclusively in water source and ground source heat pumps, the company holds a 4.1-star rating compiled from 65 customer reviews. Their residential division serves homeowners seeking the most comfortable and cost-effective way to heat and cool their properties, while their commercial branch targets building managers requiring efficient water source heat pump solutions. The manufacturer also maintains an international presence, supplying ground source systems to projects worldwide.

What distinguishes WaterFurnace from conventional HVAC manufacturers is their singular focus on geothermal technology rather than broad equipment lines. Their website prominently features a savings calculator that quantifies potential annual energy reductions for prospective buyers. The company offers multiple product series, including the Series 5 residential unit that reviewers have recently installed. Rather than selling directly to homeowners, WaterFurnace operates through a network of authorized residential dealers and commercial representatives, connecting customers with local installation professionals trained on their specific systems.

Customer feedback reveals long-term performance that justifies the higher upfront investment geothermal systems require. Frank Burk of Fort Wayne has operated his WaterFurnace closed-loop system continuously since 1998, with only a coolant circulation pump replacement needed after four years. His all-electric home, heating and cooling entirely through geothermal technology, incurred just $2,496 in total energy costs for 2024, averaging $208 monthly. Another reviewer, Marc Catalado, credited a company representative named Joleen with guiding him through the transition from traditional oil heating to geothermal, helping locate a local dealer for his Series 5 installation.