New York City and others like it are filled with old buildings that are for the most part fine, except they’re not all that comfortable to live in. Built in an era when massive boilers were cutting-edge technology, the buildings are usually too hot or too cold, but seldom just right.
There are companies trying to rectify that using clever horseshoe-shaped heat pumps. Superficially, they’re similar to window air conditioners, except they don’t block the view and they can heat as well as cool.
Gradient makes one of those heat pumps, but now it’s adding a twist: In multifamily buildings, it can link every one of its windo
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