Tubes to solid state for amplifier path...

If the Summers get too hot for your main tube rigs, what is your relief for those humid hot days when you want tunes? Do you have a solid state cool alternative?

Would Class A be 'out of one frying pan and into another' in terms of heat generation during extended listening periods?

I have not owned a class A solid state before. Nor have I spent any significant amount of time in front of one.

Any suggestions/thoughts?