In this episode, host Gil Jenkins speaks with Marshall Cox, co-founder and CEO of Kelvin, a national leader in intelligent HVAC solutions for legacy buildings in major cities. Marshall shares the origin story of Kelvin (formerly Radiator Labs) and discusses the company’s flagship product—the Cozy—an insulated radiator cover that maximizes efficiency and eliminates waste in steam-heated buildings. He also outlines Kelvin’s growth plans and explains how New York’s Local Law 97 is accelerating the push for building efficiency and decarbonization. The conversation explores Kelvin’s hybrid electrification strategy and its broader implications for cost-effective, resource-efficient building decarbonization. Additional topics include market expansion, Kelvin’s innovative financing model, and the importance of partnerships with HVAC contractors and other key stakeholders.