Safety & Reliability
All ENERGY KING wood furnaces and coal furnaces are constructed of high-grade 1/4", 7 gauge and 10 gauge steel plate, and are welded by experienced and certified welders to ensure safety and durability.
ENERGY KING wood furnaces and coal furnaces are tested to UL391 standards. You can rest easy knowing that ENERGY KING wood furnaces and coal furnaces conform to an internationally recognized standard for safety and quality.

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