The Triangle Tube Challenger Combination is an energy efficient combination gas-fired boiler with an efficiency rating of 94% AFUE. The Challenger features a “two in one” condensing heat exchanger which supplies both area heat and domestic hot water, maximizing efficiency while allowing for easier maintenance. The Challenger comes in three sizes from 84 to 124 MBH, yet is compact enough for closet installation. The Challenger features a stainless steel burner with direct spark ignition and a variable speed blower assembly.
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