I second that..lol...or is it third?
As for your issue, I've noticed my sims in all houses have no hot/cold effect at all. I haven't even had to turn on the thermostat on in any of my households. When I was playing in Sulani, I thought it was because the ceiling fans. In Brindleton Bay, Willow Creek, and San Myshuno, I've had the same issue with them not having any reaction to the weather while indoors. Of course I guess it's important to add that I've only played a little in Spring and Summer. I haven't really noticed much reaction at all, except my current household did put on their cold weather outfits while outside in San Myshuno.