KN Boilers (Advanced Thermal Hydronics)

KN Boilers, under Advanced Thermal Hydronics, manufactures the KN-Series condensing cast iron boilers known for their durability, efficiency, and industry-leading 25-year heat exchanger warranty. These American-made boilers feature advanced heat exchanger design, digital controls, and are LEED qualified, offering fast ROI and easy installation for building owners, engineers, and contractors.