This one might be an Ash, but I am not certain, as my tree knowledge is variably lacking.Damn near every elm in our area took the same hit. Brutal.
Back to the heat issue, my wife was in absolute heaven with it, I didn't want to leave the house. 80* is great plenty hot for this overweight older fella.
I keep my house at 68*, drives her nuts. I am in shorts, and a wife beater, and she is in sweats and a hoodie.