KN Series Cast Iron Condensing Boilers: Engineered to Live Up to Today’s Toughest Applications

KN Series Cast Iron Condensing Boilers were purposefully engineered to live up to today’s toughest applications and challenges, providing versatility in boiler system configuration and installation without sacrificing the bottom line.

Real World Advantages:

All HVAC and building industry professionals have one thing in common: the need for quality equipment, easy installation and great ROI. And with the ever-increasing industry demand for green technologies, it’s no wonder that more and more professionals are turning to KN Series by ATH to fulfill all of their boiler application must-haves.

For Architects & Engineers

  • Cast iron construction retains latent heat for maximum efficiencies and is made from recycled materials ‘ making it a green technology.
  • A simple and compact footprint makes for quick and easy installations.
  • HeatNet 3.0 control software communicates freely with other mechanical room equipment, eliminating the need for third-party building management systems.

Building Owners

  • Fast ROI through quick installation and decreased energy consumption.
  • Annual maintenance and service fees are reduced through a service-friendly design.
  • Cast iron construction and a 21-year thermal shock warranty make for a long-lasting investment.
  • LEED Qualified.


  • Factory-packaged units require minimal piping and field wiring.
  • All units have a small footprint for easier transport.
  • All boiler controls are digital and easily programmed.
  • HeatNet 3.0 boiler control software speeds up diagnostics and installation.

Contact Connor Doyle for more information today!