The VaporFire's impressive testing results show an Overall Efficiency of 84%, and a Combustion Efficiency of 98%, producing Emissions of less than one gram of particulates per hour. "We have not seen any other wood furnace in the market with these type of results," said owner and designer Daryl Lamppa.

This test was conducted on a medium burn by Intertek. Intertek is an accredited world leader in the testing, inspection and certification of consumer goods and works with more than one-third of all global retailers' supply chains.