Takes a long time to warm up

What is your question?

I have a 2015 Chevy Malibu and I was having having issues with the heating on the cabin on my car I was wondering if changing the thermostat would it make a difference other than that I don't have no issues with the car and not even the summer or anything everything works fine it's just on the winter it gets cold in it takes a long time to warm up inside cabin

What makes this problem better or worse?

No issues

How long has your 2015 Chevrolet Malibu had this problem?

Only in winter