Why are the BTU & efficiency ratings different on the EPA Tag and the brochure?
They are both correct. The EPA (U.S. Environmental Protection Agency) label measures environmental emissions (particulate matter or smoke) based on a test using a controlled, standardized, high efficiency fuel. Information on the mandatory EPA label regarding heat output efficiency is for similar non-catalytic wood heaters and EPA mandates a default efficiency rating of 63% for ALL qualifying non-catalytic wood stoves and wood inserts. This is not the actual efficiency of the unit. The brochure efficiency rating is the proven overall efficiency result for a properly installed, operated and maintained unit. Similarly, the BTU rating on the EPA label is based on a set amount of fuel burned in testing, not necessarily the maximum amount of fuel that could be inserted into the firebox. The brochures BTU rating is based on tests utilizing the full capacity of the firebox. Please click on the following link for more information on EPA: http://www.epa.gov/Compliance/monitoring/programs/caa/wh
