Excellent quality for sure! I load 3 times a day in the colder weather, 1 or 2 times per day in more mild weather. Yukon's customer service can't be beat, usually the person that answers the phone can help you, and they are always more than willing to spend any amount of time on the phone with you to answer any and all questions, dumb or not. I also like that they will walk you through DIY install, service, repair, troubleshooting. They used to have a rep that was here on AS regularly, but I don't think he works there anymore. Can't beat their warranty either. I bought mine used, 27 YO or so, I just recently ran out of warranty...just last month now that I think of it. You lookin at a new one?
Edit: I forgot, I'm heating about 2000 sq. ft. 75 YO cape cod that is about average insulation