It is frequently over 90 degrees outside… my partner is disabled and uncomfortable so I keep the house at 70 degrees. Even so, my electric bill (with 100 hours of 36 tubes… 8 KT150s running) is less than my Verizon bill, insurance bill, property tax bill, Comcast bill… How is this an issue? Too much bass?
I don't get it either. No problem running tube amps during summer here in GA, even with my AC slightly underpowered. Electricity cost is not really a concern on a $10K tube amp?
Just run the tube amp when you're listening, and turn it off when done. I've yet to experience any tube component that doesn't sound great after just a couple minutes warm up. By contrast, some of those solid state components need to be kept on for hours before they get into a good place.