KN-Series Plus Condensing Boilers

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