Yeah, hot bastard all summer. Damn Aug. didn't see a day under 90f and many of those were high 90's. At least my RH is under 10% all the time here in the desert of N NV. Makes for shitty vegging though, hard on the plants and they transpires a lot of water. Using my LG 6500 BTU unit now but the AC doesn't run much (been in low 80's now) but brings in fresh air.