What it delivers
The Noritz NR66ODNG Natural Gas Outdoor Tankless Water Heater is an outdoor gas tankless with a stated maximum flow of 6.5 GPM. Its listing gives a UEF of 0.81.
The listing doesn't state the BTU input, so its flow at your temperature rise can't be estimated from its own figures. The planner shows what your house needs.
As an outdoor model it mounts on an exterior wall and needs no vent pipe; in freezing climates check the maker's freeze protection and cover the connections.
Listed details: features: Endless hot water, Ideal for outdoor applications; material: Copper; model: NR66ODNG; warranty: 12 Year Heat Exchanger, 5 Year Parts, 1 Year Labor.
The listing gives a weight of 36 lb.
Warranty, per the listing: 12 Year Heat Exchanger, 5 Year Parts, 1 Year Labor.
Right unit for this house?
Install it when
- Replacing a gas tank heater
Look at another unit when
- Sizing from the listing alone
- Homes without a gas line
Strengths and trade-offs
Strengths
- Up to 6.5 GPM
- UEF 0.81
- No vent pipe
Trade-offs
- BTU input not stated
- Gas line may need upsizing
- Needs freeze protection outdoors
- Needs periodic descaling
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | NR66ODNG | Retailer |
|---|---|---|
| Features (seller) | Endless hot water, Ideal for outdoor applications | Retailer |
| Max flow (maker) | 6.5 GPM | Retailer |
| Product weight | 36 lb | Retailer |
| Material | Copper | Retailer |
| Warranty | 12 Year Heat Exchanger, 5 Year Parts, 1 Year Labor | Retailer |
| UEF (maker) | 0.81 | Retailer |
| Fuel | Natural Gas | Retailer |
Rival units at this flow
More gas tankless water heaters rated for similar demand
- Rheem RTG-95XLN-3 199,900 BTU Natural Gas Outdoor Tankless Water Heater
- Rheem RTGH-95DVLP-3 199,900 BTU Propane Tankless Water Heater
- Rinnai RE140eP Propane Tankless Water Heater
- Rinnai RE140iP Propane Tankless Water Heater
Full gas tankless water heaters spec grid · Every Noritz unit in the catalog
Final verdict
A well-specified outdoor gas tankless for replacing a gas tank heater.
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