Windmill is a quality company that stands behind their product! Getting a replacement A/C when mine all of the sudden stopped working, was a smooth and almost painless process… 
The process of removing the old A/C and installing the new one was so easy. I am kinda whimpy, so I had my adult son lift it and place it… placed the charcoal filter and plugged it in and we were up and running! Easy Peasy! And man does this A/C get cold! I wake up in the morning wrapped up in my covers like a burrito…