[Bloomberg] The Humble Radiator Is Getting a Climate-Friendly Upgrade

Open the door to an apartment at 2 Charlton Street, and the space will look like any of the 3.6 million units in New York. That is, with one notable exception: The windows are likely to be closed in the winter, a rarity in older New York buildings where the heat is often blasting from radiators. And yet the unit will be a Goldilocks temperature, just right.