Gradient’s heat pumps get new smarts to enable old building retrofits

Gradient is developing advanced heat pump technology designed to retrofit old multifamily buildings, particularly those with outdated boiler systems common in cities like New York. Their horseshoe-shaped window units provide both heating and cooling without obstructing views, offering a cost-effective HVAC upgrade that can be installed quickly without electrical system overhauls. Gradient has piloted these systems in public housing in New York City and affordable housing in California, and is engaging with colleges to improve dormitory comfort amid rising temperatures. A key innovation is Gradient’s Nexus system, which allows building managers to set usage limits on heating and cooling to prevent energy overconsumption by residents, leading to significant energy savings—one example showed a 25% reduction in energy use after imposing a 78˚F heating cap. Additionally, Nexus can manage electrical load by reducing power draw on outlets with limited capacity and supports demand response strategies by adjusting cooling based on building conditions and sensor data. This approach aims to ease strain on the electrical grid during peak demand, making widespread