Home Size Southern climate: 2-3 bathrooms
Northern climate: 1-2 bathrooms
Indoor Unit Dimensions 23.6” (H) x 13.8” (W) x 9.4” (D)
Outdoor Unit Dimensions N/A
Weight 49 lbs.
Gas Consumption
(NG & LP)
Max. 180,000 Btuh - Min. 18,000 Btuh
Capacity Range 0.5-8.3 Gal./min.
Energy Factor DVC: 0.82 (NG), 0.83 (LP)
Thermal Efficiency 85%
Temperature Settings 100-140° F (in 5° F Intervals), 9 options
Accessories Anchoring Screws, Power Cord


Most Advanced Green Design: The NR83 demonstrates Noritz's commitment to being the tankless leader. With the NR83 Noritz shows its dedication to reduce environmental burdens and atmospheric pollution.

The NR83-DVC is the best 180,000 btuh concentric model in the category with many industry-first features. Equipped with a commercial-grade heat exchanger and green Eco-Burner, the NR83 is the perfect mix of professional power and environmental consciousness.

Owners Manual

This unit offers several innovations:
>> Commercial-Grade Heat Exchanger/ - Engineered for Durability
>> Eco-Burner - Noritz's Most Advanced Green Design
>> Easy Installation - Zero-Clearance and Adjustable Venting

Available in Natural Gas (NG) and Propane (LP) models only.
>> Temperature Settings: 100-140oF (9 options)
>> Self-diagnostic onboard computer system
>> Back-up battery compatible
>> Recirculation compatible
>> Digital remote built-in

>> Accessories:
Isolation valves (#IK-WV-200-1-TH or #IK-WV-200-1-SW) ScaleShield (#SS-HB-1) H2FLOW Anti-Scale System (#H2F)