Cool Air was made into a rather poor "night Gallery" story back in the 70s I believe. Night Gallery was a Rod Serling program that was a variation on his Twilight Zone programs.
While it was true that HPL said things that were racist and anti-semitic, he also married a Jewish woman. So one has to be careful about how much he said was for effect. It may be closer to the mark to say that HPL was bitter because he felt he had missed out on the 18th Century, which is the time he felt he belonged in. His idealization of the 18th Century was essentially that Britain ruled the world, and God saw it was good. This is not to say that HPL actually knew his history that well, but he was passionate about his conception of it.

