LOL.. I bought this window unit from a guy who's father had just died for 100 dollars. It is a GE brand bought from Sears. The old man still had all the original paperwork and hardware from the day he bought it. The owners manual had 7/7/77 as the date of purchase written in it. I soaked the filter in clorox, but it still gives off a musty smell... still better than factory air.