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

16,000+

tCO2 avoided annually

Meet the Team

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    Marshall Cox

    CEO, Founder

  • Black and white headshot of Kelvin VP of Sales

    Matthew Isaacs

    Chief Revenue Officer

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    Julia Lopez

    Director of Hardware

  • Black and white headshot of Garrett

    Garrett Modeste

    Director of Growth and Customer Success

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    Julia Dayan

    Director of Data Systems and Analytics

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    Brian Caulfield

    Director of Operations

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    Fatumatah Konteh

    Sales and Marketing Manager

  • Shaheer Atif

    Senior Data Analyst, Manager

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    Prudhvi Naik

    Associate Project Manager, Operations & Analytics

  • Black and white portrait of a smiling young man with short dark hair, wearing a dark button-up shirt with a mandarin collar, against a plain light gray background.

    Tomas Herrera

    Data Specialist

  • Black and white portrait of a woman with shoulder-length dark hair, wearing a striped shirt, smiling slightly, against a plain light background.

    Dabin Han

    Sales Coordinator