Onsu standard
KD Navien shifts the paradigm in the boiler field from heating to hot water supply.
World’s best heat efficiency of 98.8%
KD Navien’s green technology takes care of people and nature for a better future.
Unlike regular boilers, the condensing boiler is a high-efficiency and high-tech boiler that does not discharge heat from primary combustion.
Instead, it recycles the heat, using it once more.
Saving gas charges by 28.4% at maximum
The condensing boiler not only helps to reduce fine dust by lowering nitrogen oxide emissions, but also restrains the greenhouse effect by reducing CO2 by 479kg per year. This amount of CO2 reduction is equivalent to planting 208 pine trees.
The product adopts a high-quality integral stainless heat exchanger.
- Lifespan is 3.8 - 4.5 times longer than other heat exchangers, thanks to its resistance to corrosion and erosion.
- Most advanced stainless heat exchange technology in Korea
Eco-premix burner
A smaller flame leads to reduced gas consumption and eco-friendly use.
- Burner system optimized for condensing
- Reduces gas consumption by precisely controlling the flame by 1/10
- Design enhances durability and low noise
ASA heating
Considering your housing structure and weather,
this product maintains a comfortable temperature suitable to each environment,
which lowers temperature fluctuations compared to existing boilers.
Dual sensing control is the secret behind comfortable floor-type heating.
As the temperature of water after heating a room is checked once more, this product not only realizes more comfortable heating than existing boilers, but also saves more gas charges.
The product uses Navien’s technology and knowhow to swiftly supply hot water. It maintains a constant amount of hot water at a certain temperature, even when hot water is used simultaneously in several places.
- 30 - 60℃ at1 1℃ intervals
Every detail is handled for your family's happiness and safety!
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Korea’s only APS (Air Pressure Sensor) is safe, even when there's heavy wind.Combustion is ensured, even in heavy wind as fast as 55m a second.The boiler can be safely used in a high-rise apartment, residential building, or waterfront with heavy wind without worrying about headwind.
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State-of-the-art digital gas & air proportional controlPrecise digital combustion method!Optimal combustion is realized by controlling the amount of gas and air with an advanced digital method.
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3-layered gas leakage preventionCustomer safety is thoroughly secured
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Won't stop because of power failureBoiler can even be operated if there's a sudden outage.
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Self-diagnosis forindependent operation
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Quadruplex protectionThere is no problem with the sudden drop in temperature!
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Leakage detectionWater is automatically handled, preventing property damage!
- Lamp uses less gas, saving you money - Wide LCD screen can be easily checked at a glance