WOW, I am the exact same way! I can't STAND the heat! I hate hot days, I hate hot rooms, etc.... ********BUT********
If I am cleaning anything, even any part of me, I want the water to be HOT! I even turned up the water heater full bore. I treat the single valve faucets as on off switches(off and HOT). BTW the only exception is with things where so much heat might harm them, like colored clothes.
BTW I was at a church one time, and someone saw me cleaning something. He was AGAST at how the water was practically steaming, and I was in there with my bare hands. Other than that, nobody noticed.
I guess the two most obvious and odd things about me otherwise, are that I LOVE the cold(ironic, I know), and don't like being too close to others.
BTW the ability to handle such things is an autistic trait. The cold one was VERY obvious to others a couple years back.(I wear a coat now, but usually have it open anyway) Imagine me out on a windy snowy day, no jacket! Yeah, I know! Sounds stupid! NOPE, I never caught cold, and never got frostbite. Then again, I never DID put my hands in the snow. If I slipped up, there was always a way to recover.
Who knows, maybe it is a kind of stimming, because the cold CAN generally get your heart pumping harder.
Steve