About Us

Kelvin was born in a New York winter.

Kelvin began in 2013 when CEO Marshall Cox, then a PhD student in electrical engineering at Columbia, invented a smart insulated radiator enclosure after his twin complained about an overheated dorm room.

That concept, the Cozy, evolved into Radiator Labs, now Kelvin.

Kelvin focuses on older multifamily buildings with steam or hot-water systems and tight capital budgets. Using smart controls, distributed electric heating, and real-time building data, Kelvin provides owners an economically feasible path to meet carbon reduction mandates like Local Law 97 without major renovations or reduced comfort.

Aerial view of brick residential buildings with fire escapes, surrounded by trees.

40,000+

Active Cozys

25.5%

Average savings on heating costs as verified by NYSERDA

14,800+

tCO2 avoided annually

Meet the Team

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    Marshall Cox

    CEO, Founder

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    Ely Greenberg

    COO

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    Amit Dar

    Chief of Staff

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    Matthew Isaacs

    Vice President of Sales

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    Julia Dayan

    Senior Energy Analyst

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    Fatumatah Konteh

    Sales and Marketing Manager

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    Garrett Modeste

    Account Executive

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    Brian Caulfield

    Senior Project Manager

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    Prudhvi Naik

    Operations Project Specialist

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    Tomas Herrera

    Data Specialist

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    Dabin Han

    Sales and Operations Coordinator