Hot Water is Available the Second Faucet is Turned On!

Quick Hot Water Supply! Built-in Circulation! (A Model Only)

Quick Hot Water Supply

The circulation pump and mini buffer tank circulate hot water at a certain temperature through hot water piping in the building, enabling immediate hot water supply when a faucet is turned on.

Complete Prevention of Cold Water Sandwich Problem

Cold water bursts are a thing of the past: no more sudden changes in water temperature.

No Waste of Water

Since hot water comes quickly, no water is wasted while waiting for the water to heat up.

Easy and Economical Installation

No need to purchase or install additional pumps for hot water circulation makes water heaters more economical.

Powerful Anti-Freezing Feature

‘Hot water circulation’ feature is enough to maintain hot water in the hot water piping, ensuring freeze protection even during severe winter freezes.

More Convenience by 24-hour Reserved Operation

Convenience is increased by setting hot water circulation schedules through hot water temperature controller.

Plenty of Hot Water Even on the 30th Floor

Highest quality stainless-steel and Navien’s unique welding technology resists water pressure by up to 10gf/cm².

APS(Air Pressure Sensor) maximizes combustion efficiency by sensing and
controlling the air required for optimal combustion-even in high-wind locations
and installations with long vent runs.

GPS(Gas Pressure Sensor) offers stable combustion by
sensing gas pressure and controlling the fan speed to
maintain optimal combustion, even under a wide range
of gas-pressure changes.

-Triple-Layered, Pre-Mixed Burner

A water flow adjustment valve used as a water shut-off valve removes the necessity of an electrically activated water valve
for each unit and control system.

-Leak Detector

Built-in leak detector prevents damage to water heater as well as personal property.

-Air intake filter

An air intake filter prevents foreign substances, such as dust or insects, from entering the system, freeing the burner from elements that would normally cause unstable combustion or energy inefficiency.

The above GPM rates and shower capabilities are based on a standard 2.5 GPM shower head and a shower temperature of 105 °F. The cold water temperature may change with the seasons. Use the winter water temperatures to make your selection.