... they raised the temp on my machine which worked wonders! You might talk to them about that, it may be a good compromise.
And remember, you can't be everyone's friend.
certain nurses keep the heat low because and this is there own words "They are not going to let the patients sweat the nurses out."
And you're not there to be anyone's friend ... you are a paying customer. I understand not wanting a hostile environment, but we are still their customers. And you don't have to go ballistic to get what you want. Flies and sugar and all that. Good luck!