I normally keep my house cooler, and it's pretty cold outside, I just got Tiggy used to going out and doing his business and coming back in, we have little garden for this. But for our evening walks I do put a coat one him. I put one on my boxer too and for just as short of hair he doesn't mind the cold but you can tell he is cold.
I look at it this way, if you are cold enough to put on a heavier jacket then your pup will be cold too, so she would like to have a sweater on too. Some don't like them, some will tolerate them, others hate them. Tiggy he LOVES to wear coats, sweaters and even t-shirts