Wasting the expensive heat in your Apartment? Your green pal Kelvin may have the solution.

If you live in a city such as New York and you are concerned about the environment, winter can be very frustrating. Why? Because the steam radiators in many apartments in these conurbations blast out heat whether you like it or not from a central boiler in the basement — fueled by natural gas or oil — that keeps send scalding liquids through the pipes. On top of that, it’s most common that you can turn the radiators either on or off, with nothing in between.

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So, what happens when the weather warms up a bit? Apartment dwellers, facing sauna conditions or cold inside their abodes, open their windows to let the stifling heat out, thus wasting the warmth, which both squanders money and is a contributor to climate change. In fact, in New York, building emissions are about two-thirds of the city’s carbon footprint and lead to about #2 billion on wasted fuel sources.

That’s according to a Brooklyn-based startup company called Kelvin, which says it has come up with a solution in the form of The Cozy, a device it says can “more efficiently direct steam where it’s needed.”

In essence, it works like this: The insulated Cozy fits over a radiator and traps steam heat behind the cover. It then uses sensors to release heat, via an included fan, based on the temperature of the room.

In other words, a double-whammy — the heat isn’t wasted and residents can live in ideal temperatures, leading to a 25% saving in heating costs, according to the company.

And then there’s financial help from the government in the form of incentives from President Joe Biden’s climate-focused Inflation Reduction Act (IRA) and state subsidies, that cover up to 70% of the cost, making the price of each device about $200.

So far, about 30,000 of the units have been sold. May their sales heat up even more.

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