Commercial
Navien Condensing Boiler
Core Technologies
Condensing boilers are eco-friendly appliances that reuse heat from exhaust gases, thus reducing energy consumption. They cut emissions of nitrogen oxides, carbon dioxide, and carbon monoxide major contributors to fine dust pollution and each unit delivers an environmental benefit equivalent to planting about 137 pine trees each year.
Since developing Asia’s first eco-friendly, high-efficiency boiler in 1988, KD Navien has led the industry through continuous technological innovation.
The Market Leader
in Eco-friendly Condensing Boilers
As the pioneer of Asia’s first condensing boiler, KD Navien has transformed heating technology
and established itself as the domestic leader and the top exporter in the condensing boiler market.
38years of condensing technology expertise
Developed Asia’s first condensing boiler in 1988
Largest market share for
15consecutive years
Since 2011, ranked #1 in production and sales of condensing boilers, as well as in Korean boiler market share.
Top exporter for
34consecutive years
Ranked #1 in boilers and water heaters, accounting for over 87% of Korea’s total boilers and water heater exports in 2024.
Largest market share for
11consecutive years
Ranked #1 in wall-mounted condensing gas boilers between 2013 and 2024.
Navien Cascade System
Core Technologies
Patented compact stainless steel fire tube heat exchanger
Navien’s ASME-certified, “H” stamped stainless steel fire tube heat exchangers are in-house designed and built by the latest in robotic and automated technology,
reducing high stress point weld failures common on other boilers.
15:1 industry leading turndown ratio
stainless steel fire tube heat exchanger 15:1 industry leading turndown ratio Multiple venting optionsThe sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling while also enhancing temperature control for DHW.
Cascade up to 32 units
With Navien cascading technology, when a boiler gets up to 80% of its capacity the next unit will start to help meet the heating system requirements.
This boiler sequencing will continue until the heating load is fully satisfied. The Navien cascading system also balances out the run hours of each boiler for longer life.
Explore the Navien
Commercial Boiler Line-up
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