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.

KN-Series Plus Ultra High Efficiency Cast Iron Boilers

Built off the foundation that made the KN-Series a market leader the KN-Series Plus incorporates all of the class leading features of the KN-Series with increased efficiencies making it not only the most durable boiler on the market but one of the most energy efficient.

 

KN-Series Plus Condensing Boilers

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.

KN-Series Plus Ultra High Efficiency Cast Iron Boilers

Built off the foundation that made the KN-Series a market leader the KN-Series Plus incorporates all of the class leading features of the KN-Series with increased efficiencies making it not only the most durable boiler on the market but one of the most energy efficient.

 

The best just got better.

In a commercial market where efficiency is everything, the KN-Series stands out among the crowd as the only high efficiency, cast iron line of boilers to combine condensing gas-fired technology, with the strength, durability, and heat retention of cast iron construction. Durable, rugged and long-lasting, cast iron is the ideal material for condensing boiler systems that are built to last the long haul

The KN-Series Plus utilizes a newly designed hydrophobic coated finned stainless steel heat exchanger to work in concert with the existing high efficiency cast-iron heat exchanger resulting in the most versatile high performance boiler in the world. By using finned stainless steel tubes the KN-Series Plus has increased heat transfer area to maximize efficiency in a very cost-effective manner all while keeping the same small footprint as the original KN-Series boiler.

KN-Series Plus Features

  • Efficiency: Up to 96% AHRI
  • BTU Range: 600,000 – 4,000,000 BTUs
  • 10:1 Full Modulation (optional)
  • O2 Monitoring
  • Footprint: Compact
  • 25-Year Heat Exchanger Warranty

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