I DID wind up giving in, and making myself comfy in my chair. (It’s a papasan, not conducive to sleep unless you’re curled up like a small kitten. Which I am not.) Wound up PASSING OUT for a while all curled up pangolin-style, groggily half-waking, moving to the bed without entirely coming to, then conking out stretched flat for several hours of incredibly deep sleep.
^^ anti-rant, by the way. Just saying what worked for me.
Mini rant: it’s not super hot, but it’s hyoomid here. Hard to get climate control right with just a window unit.
Run the A/C = get cold, worry about electricity costs.
Switch off A/C = OMG SWEATY GIMME POPSICLE