$17.5M DOE manufacturing grant for Detroit factory (100,000 units/year). Deployed in NYC and Boston public housing. Nexus building management product launched Feb 2026. Targets old multifamily buildings.
Gradient Comfort makes window-unit heat pumps — plug-in, window-mounted heating and cooling systems that fit in standard window openings — specifically designed for the hardest decarbonization problem in the US: old multifamily buildings with no central HVAC infrastructure. The company received a $17.5 million DOE manufacturing grant to build a Detroit production factory capable of 100,000 units per year, and has deployed systems in New York City and Boston public housing facilities at scale.
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