Items from my parents' house. I couldn't find the warranty. I have confirmed that everything works before listing. I have cleaned the filter and the exterior where possible. The surface of the louvers isn't as white as it originally was, but it's not very noticeable. I tested the automatic sensor, and it turned off after about 5 to 6 minutes when no one was present. It's still usable, so I'm looking for someone who understands the above.