Love, love, love our Winhager pellet boiler. It is an amazing piece of technology. It feeds 1000 gal of storage we have for our BioMass wood boiler. I now burn wood when I feel like it. Now load a few bags of pellets when needed. Sorry, don't have time to read all the posts. Just noticed that Winhager wasn't in your trade study.3rd season with Winhager and has worked essentially flawless! On a scale of 1-5 for satisfaction.... I'm a 6.