KN Series by Advanced Thermal Hydronics are the only high efficiency, cast iron boilers available for the commercial marketplace that combine the efficiency of condensing, gas-fired technology with the strength, durability and heat retention of cast iron construction. A Mestek company proudly manufacturered in Boyertown, PA.
Visit KN Series Boilers:
https://www.knseries.com/
https://www.knseries.com/