U.S. 
EPA
Test Reports
The EPA-Certified Wood Stove Database provides information for residential wood heaters (including wood stoves and pellet stoves) certified by the EPA for sale in the United States
Comfortbilt pellet stoves are certified by the EPA
Test Reports
HP21
HP22 Series
HP50s
HP61
HP75C

HP40
HP41
HP42
HP54
HP55