All types of heat exchangers in wood furnaces coat with dust over time and need to be cleaned regularly to maintain optimal efficiency. So making the heat exchanger easy to clean is the third important component to creating a high efficiency outdoor wood furnace. The G-Class products include the EASY SWEEP SYSTEM which allows the heat exchanger to be cleaned daily in as little time as 5 seconds.

The harder the G-Class products work the more efficient they become and when tested with the appropriate EPA approved North American test method the G-Class achieves overall efficiency exceeding 86% for a category 4 burn. Reported efficiency varies a lot depending on the test method used. For example when using European test methods which use the lower heat value of wood for calculations the reported efficiencies can be as high as 95%

A channel built into the top of the fire chamber and the powerful ECM suction fan work together to insure your comfort and safety during loading. When the fire chamber door is opened the suction fan pulls any smoke that would otherwise escape from the fire chamber back towards the chimney and away from you! A must have feature for indoor installation.