Commercial Boiler ImagesFröling T4Fröling T4 InstallationsInstallations The First Fröling T4 Wood Chip Boilers Have Arrived Posted September 9, 2015January 10, 2022 Travis Paige The first Fröling T4 boilers have arrived and are being installed. The T4 is a 500,000 Btu/hr. commercial grade boiler that can burn both wood chips or wood pellets. This installation is at the Sharon Elementary School, located in Sharon, VT. Please leave this field empty WANT MORE? SIGN UP TO RECEIVE THE LATEST TARM BIOMASS BLOG POSTS. We don’t spam! Read our privacy policy for more info. Check your inbox or spam folder to confirm your subscription.