Radiator Labs, now known as Kelvin, is an innovative heating and cooling tech company that offers intelligent HVAC products and solutions. Founded in New York City in 2013, the company's mission is to decarbonize legacy buildings' heating and cooling systems. The inspiration for Kelvin came from the founder's twin brother, who complained about the heat in his apartment.

This led to the development of the Cozy system, a retrofit device that encloses radiators and controls their heat output. The Cozy system has been proven to save between 25% and 40% on heating bills. In addition to the Cozy system, Kelvin has developed a bespoke heat pump that replaces room air conditioners in legacy buildings and works with a thermal battery.

This hybrid electrification system shifts heating and cooling to 80% electricity, allowing for effective decarbonization while still utilizing the existing radiator system. By partnering with real estate agents, energy auditors, architects, engineering firms, and energy technology companies, Kelvin aims to address the challenges of decarbonizing legacy buildings' heating and cooling systems and meet environmental requirements. With a dedicated focus on finding innovative solutions, Kelvin is at the forefront of full electrification in legacy buildings