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Noritz NR662 6.6 GPM Outdoor Natural Gas Tankless Water Heater

by Noritz
Original price $1,592.20 - Original price $1,612.15
Original price
$1,592.20 - $1,612.15
Current price $1,592.20


Get an energy efficient, endless, hot water heater that puts your safety first

The NR66 series is perfect for townhouses, apartments and condominiums with 1 to 2 showers. If properly sized, they can produce an endless supply of hot water while saving space without compromising power.

Note: PVC can not be used for venting.


Direct ignition - No pilot light on standby
Standard burner - High quality single flame burner.
Thermal fuse - Automatic overheat protection.
Turbo Flow - Up to 6.6 GPM at 35° temperature rise (5.3 GPM at 45° rise).
Fully modulating burner - Burner level automatically adjusts accordingly.
Resin coated PC board - Increases protection from elements and durability.
Safety lock out - Default maximum temperature of 120 degrees (adjustable).
Automatic air regulator - Monitors internal temperature and maximizes burner efficiency.


Home Size Southern climate: 2 baths
Northern climate: 1.5 baths
Unit Dimensions 20.5” (H) x 13.8” (W) x 6.7” (D)
Weight 36 lbs.
Gas Consumption Min. 15,000 btuh
Max. 140,000 btuh
(NG & LP) Natural Gas/Propane
Capacity Range 0.5-6.6 Gal./min. Energy
Energy Factor SV: 0.82 (NG), 0.84 (LP)
OD: 0.83 (NG), 0.86 (LP)
Thermal Efficiency 83%
Temperature Settings 100-150° F (in 5° F Intervals) 160° F

Technical specifications

Install Manual

User Manual