I'm building a new house as we speak and I'm installing a Pellergy pellet burner on a Buderus G215/4 boiler. I have one of the Pellergy units at a duplex I own and it's been working great. The only issue is during the shoulder season it tends to short cycle since the demands for heat are less. To combat this issue I am installing a 500 gallon storage tank. I should be up and running in about a couple of weeks. I will post pics soon.