It will probably feel useless because it won't make a difference right away, but it's got a better chance of a good outcome eventually than a rant on HN.
I know I froze to death one year in a very cold flat which I couldn't heat with a 1 or 2 cm gap under the doors. Every time I'd cook I'd cut myself because my hands were too numb to control the knife. (The rest of the time it was okay because I'd just wrap up under my doona on the couch or wherever.) Now I live over a bakery in an old building so there's lots of old heat and heavier construction keeping it tolerably warm.