Navien Condensing Tankless Water Heater 98% AFUE
Navien Condensing Tankless Water Heaters supply Unlimited hot water at a steady temperature whenever you need it and for as long as you need it. Navien water heaters create a more comfortable living environment.
Ultra condensing efficiency
- The industry's highest energy efficiency at 98% means the lowest annual operating costs and the best payback compared with conventional tankless or tank-type water heater.
- Saves, on average, more than $160 per year over conventional tank type gas water heaters and $40 per year over conventional tankless gas water heaters.
- Shortest payback of any tankless water heater on the market.
- Best gallons per minute performance when comparing input BTU.
Eco-Navien Technology
- Ultra efficient burner uses less gas resulting in substantial CO2 and NOx emissions reductions.
- Less NOx and CO2 means less acid rain and less green house gasses minimizing ozone layer depletion.
Extended life cycle
- Navien dual stainless steel heat exchangers are up to 20 times more resistant than copper heat exchangers to erosion and condensation damage.
Easy venting
- The higher efficiency of Navien water heaters result in lower exhaust temperatures that allow the use of PVC or other plastic venting materials.
- Plastic venting offers significant cost savings and much easier installations.
- 3" PVC venting runs to 100' with 6 elbows.
Advanced technology
- Enhanced Safety with Dual Microprocessors
- Navien's two microprocessors offer better control and safer operations by continuously cross monitoring each other's performance to assure proper operation at all times.
- These two microprocessors not only control the burner for ideal combustion but also maintain a steady hot water temperature.
Optimal and stable combustion with "APS" and "GPS"
- APS (Air Pressure Sensor) maximize combustion efficiency by sensing and controlling the air required for optimal combustion even in high wind locations or in 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 changing gas pressure.
Water leak detection
- Built-in leak detector prevents damage to the water heater and to personal property caused by a water tank.
Built-in internal circulation pump with buffer tank
- Delivers hot water to fixtures quickly resulting in water conservation.
- No minimum flow rate: get hot water even at very low flow rates of 0.1 or 0.2 GPM.
- Eliminates any hot/cold/hot stacking, the so-called "Cold Water Sandwich".
- Saves additional money and time by eliminating the pump purchase cost and on-site installation costs.
- Prevents heat exchanger from freezing.
Remote Control
- Advanced water heater diagnosis capability and error feedback.
- Touch activated back light function and Easy-to-Use button type control.
- Built-in recirculation timer for water and energy savings.
- Key-pad lock button prevents inadvertent temperature changes.
- Temperature adjustment in 1° F increments.

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Type |
Model # |
Price Including P&L W/10 Feet Venting |
Available Rebates |
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Residential Condensing Units |
NR-180 |
$ 2180.00 |
N/A |
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NR-210 |
$ 2355.00 |
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NR-240 |
$ 2520.00 |
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Residential Condensing W/ Buffer Tank |
NR-180 A |
$ 2340.00 |
N/A |
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NR-210 A |
$ 2530.00 |
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NR-240 A |
$ 2645.00 |
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Model Item |
NR-180, NR-180A |
NR-210, NR-210A |
NR-240, NR-240A NP-240, NP-240A |
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Heat Capacity (Input) |
Natural Gas |
Min. 15,000 Btu/hvMax. 150,000 Btu/h |
Min. 17,000 Btu/h Max. 180,000 Btu/h |
Min. 17,000 Btu/h Max. 199,000 Btu/h |
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LP Gas |
Min. 15,000 Btu/h Max. 150,000 Btu/h |
Min. 17,000 Btu/h Max. 180,000 Btu/h |
Min. 17,000 Btu/h Max. 199,000 Btu/h |
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Thermal Efficiency |
98.0% |
98.0% |
98.0% |
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Energy Factor (DOE) Natural Gas |
0.94/0.96 |
0.94/0.97 |
0.95/0.97 |
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Dimensions |
W17”×H28” ×D14” |
W17”×H28” ×D15” |
W17”×H28” ×D15” |
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Weight |
NR/NP-A |
77 lbs |
86 lbs |
86 lbs |
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NR/NP |
67 lbs |
77 lbs |
77 lbs |
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Installation Type |
Indoor/Outdoor Wall-Hung |
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Venting Type |
Direct Vent |
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Ignition |
Electric Ignition |
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Water Pressure (min-max) |
15 – 150 PSI |
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Gas Supply Pressure (from source; min-max) |
NG: 3.75” WC ~ 10.5” WC / LP: 8” WC ~ 13.5” WC |
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Min. Flow Rate to activate Water Heater |
For “A” Model 0 GPM (no min. flow rate requirement), Otherwise 0.5 GPM |
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Connection Sizes |
Cold Water Inlet |
¾” NPT |
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Hot Water Inlet |
¾” NPT |
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Gas Inlet |
¾” NPT |
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Power supply |
Main Supply |
120VAC, 60 Hz,200 W ( max 2A) |
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Heat Exchangers |
Primary Heat Exchanger: Stainless Steel Condensing Heat Exchanger: Stainless Steel |
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Venting (0” Clearance) |
Exhaust (3”) |
PVC, Navien Stainless Steel or Special Gas Vent Type BH Class IIA |
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Exhaust (3”) |
PVC, Flex Aluminum, Flex Stainless Steel, ABS. |
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Model Description Legend |
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NR |
Navien Regular (Portable Domestic Hot Water) Max. Temperature: 140 F |
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NP |
Navien Premium (Portable Domestic Hot Water & Commercial Applications ) Max. Temperature: 185 F |
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A |
With Circulation Pump and 0.5 US Gallon (2 Liter) Mini-Buffer Tank |
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Warranty |
NR Series |
NP Series |
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DHW Use Only |
Residential Application |
Commercial Application |
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Heat Exchanger |
15 Year |
15 Year |
10 Year |
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Parts and Components |
5 Year |
5 Year |
5 Year |
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Labor |
1 Year |
1 Year |
1 Year |
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* Prices are for standard installation only with up to 10 Feet of venting. Extras may vary.
Call 905-707-1299 for details.
Navien Brochure | Homepage | Rinnai | Navien Website
