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Old buildings,
new tech. We’re your decarbonization partner.

Kelvin’s smart radiator covers, heat pumps, and thermal batteries save money, reduce carbon emissions, and enable pinpoint temperature control for apartments in legacy buildings.

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30,000 +

Cozy's sold

25.5 %

Average savings on heating costs

80 %

Electrification for 10% of the cost

Why you need Kelvin solutions

  • Increased profitability for building owners
  • Simplified temperature control for residents
  • Improved safety for children and pets
  • Compliance with local sustainability laws
  • May be purchased for no upfront cost with instant payback

Seamless heating & cooling solutions

Kelvin’s thermostatic radiator enclosures (Cozys), heat pumps, and thermal batteries are the easiest and most cost-effective way to improve heating efficiency in legacy buildings and work toward the larger goals of sustainability and decarbonization. Our quick and stress-free installations enable legacy building owners to save money and energy while also providing tenants with room level temperature control all year long.

Want to know how much money and energy your building could save?

Calculate energy bill savings
Photo of an apartment building radiator

Of all the buildings in
New York City are heated using steam radiators.

A whole new world for radiator-heated buildings

While radiators are robust, and have been in use for more than a century, modern upgrades like double pane windows have made this technology vastly inefficient, leading to overheated buildings where occupants open up the windows to cool off. Our foundational product, the Cozy, puts an end to this problem. Our insulated radiator cover distributes heat with maximum efficiency to prevent waste and heating imbalances.

Real buildings, real results

2 Charlton Street

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LeFrak 295 Clinton Ave.

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Clinton Hill Co-ops

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Shaping the future of legacy buildings in the energy transition

Through a variety of hybrid electrification methods, Kelvin is on a mission to support legacy buildings in transitioning to a decarbonized future. The team is working on a number of intelligent HVAC solutions, including thermal batteries and other groundbreaking technology.

Are you ready to save money and energy?

Find out if your property is eligible and learn more about the available utility rebates and state incentives.

Calculate savings