Optimal temps for a redfoot are 82-86 24/7. 75 is too cold. That certainly won't kill them, and as long as they can move in and out of warmer areas, like a patch of sunshine, it should be fine, but closed in the house with the AC on is not a good environment for a tropical tortoise. The slick laminate is also not so good for them to be walking on. Too slippery.Oh, yeah, not at all. I get it 1000%.
The good thing is that I do not need many examples, one reason is enough to adjust. Just remember it was never a frequent thing (for the bunny, yes, daily, but the tortoise came into the house just every now and then, and just recently) . For the first year and a half or so that we had her, she had another enclosure, some 7 by 7 area in a corner of the yard, but not adjacent to the house. Just recently we moved her to a bigger space that we secured for her, and that space has direct access to the house, through a sliding glass door, so, sometimes, if the door is open, she just walks in, and we let her (or, should I say, used to let her, until yesterday, lol).
By the way, just out of curiosity, I checked my floor temperature with my temp gun, it is 75. I have laminate floors, not tile or wood, and it is incredibly hot these days here in South Florida, like, crazy hot, still, I know the temps are not always like that, I was just curious.