Noritz NR66ODNG Outdoor Tankless Water Heater Review: Who It Fits and Who Should Skip It
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This noritz nr66odng outdoor tankless water heater review focuses on a unit designed for exterior use. It delivers hot water on demand using natural gas. The key specs are a 140,000 BTU heating capacity and a 6.6 GPM flow rate. These numbers define its performance for outdoor showers or kitchens. The unit measures 26.6 by 17.6 by 10.7 inches. It weighs 36 pounds. This compact design fits tight spaces. The high efficiency rating of 0.81 UEF suggests lower energy use. You get endless hot water without a storage tank.
What stands out
- 140,000 Btuh heating capacity for consistent hot water
- 6.6 Gpm flow rate supports multiple fixtures
- Compact dimensions of 26.6 x 17.6 x 10.7 inches
- 0.81 UEF indicates high energy efficiency
Who it fits
Good fit for
This unit suits homeowners with outdoor kitchens, pool houses, or exterior showers. The 6.6 GPM flow rate handles one shower and one sink simultaneously. The outdoor installation rating means it withstands weather elements. Natural gas users will appreciate the high BTU output. If you need a dedicated outdoor water source, this model fits well. The compact size allows installation in tight exterior corners or utility areas without taking up much space.
Who should skip it
Skip this option if you need indoor installation. The data specifies outdoor use only. You also should look elsewhere if you require higher flow rates for multiple bathrooms. The 6.6 GPM limit may not support several fixtures at once. If you use propane instead of natural gas, this model is not suitable. The unit lacks indoor venting specifications. Check your local codes for outdoor placement restrictions before purchasing.
Verdict: The Noritz NR66ODNG is a solid choice for outdoor natural gas applications. Its high BTU and efficient design make it reliable for exterior use.
Noritz NR66ODNG Key Specs Explained
140,000 Btuh
This BTU rating indicates the heating power of the unit. Higher BTU means faster recovery of hot water temperature. You benefit from consistent output even in colder climates. When comparing tankless water heaters, this capacity suits households with moderate simultaneous demand. It ensures the water reaches your desired temperature quickly without significant drops during use.
6.6 Gpm
Gallons per minute (GPM) measures flow rate. This value tells you how much hot water the unit delivers each minute. A 6.6 GPM rating supports multiple fixtures running at once, such as a shower and a sink. When shopping, compare this against your total fixture needs. Higher GPM is essential for larger families or homes with multiple bathrooms.
Natural Gas
This specifies the fuel type required for operation. Natural gas is a common utility service in many areas. You must have a gas line connection to install this unit. When comparing tankless water heaters, check your available fuel source first. Gas units often provide higher flow rates than electric models, making them suitable for high-demand applications.
Outdoor
This installation location rating means the unit is built for exterior mounting. It withstands weather elements like rain and sun. You do not need indoor venting space or a garage for installation. When comparing, note that indoor units require different venting and clearance. Outdoor models save interior space but require proper drainage and electrical access outside.
0.81 UEF
Uniform Energy Factor (UEF) measures efficiency. A score of 0.81 indicates how effectively the unit converts fuel to hot water. Higher UEF means less wasted energy. When comparing tankless water heaters, look for higher UEF scores for better long-term performance. This metric helps you estimate operational efficiency relative to other models in the market.
Design and build details
The Noritz NR66ODNG is built for exterior environments. According to the listing, it lacks a protective finish. This design choice suggests the internal components are engineered to withstand outdoor exposure without relying on cosmetic coatings. You should ensure the unit is placed in a location protected from direct debris accumulation, as the bare metal surfaces may require routine cleaning to maintain optimal performance.
The physical dimensions are 26.6 inches in height, 17.6 inches in width, and 10.7 inches in length. This compact footprint allows for flexible mounting options on exterior walls. The unit weighs 36 pounds. This weight is manageable for standard residential mounting hardware, but you must verify that your chosen wall can support the load securely. Proper anchoring is essential to prevent vibration or movement during operation.
The layout is straightforward, with controls and connections accessible from the front. Since this model is specified for outdoor installation only, you cannot place it indoors or in enclosed spaces. The natural gas connection is integrated into the base, requiring standard gas line compatibility. You should consult local codes for venting requirements specific to outdoor tankless units. The design prioritizes durability and efficient heat exchange over aesthetic integration with home siding.
Setup and everyday use guide
Installing the Noritz NR66ODNG requires planning for its outdoor placement. The unit measures 26.6 inches in height, 17.6 inches in width, and 10.7 inches in length. It weighs 36 pounds, making it manageable for a single installer with proper support. You must ensure the location allows for adequate ventilation and access to natural gas lines. The listing specifies this model is for outdoor use only. Do not attempt to install it indoors. The lack of a protective finish means you should keep it clear of direct debris accumulation. Daily operation begins with connecting the gas supply and verifying electrical requirements for ignition. The 140,000 BTU heating capacity ensures rapid water heating. You will experience a flow rate of up to 6.6 gallons per minute. This output supports multiple fixtures simultaneously, such as a shower and a kitchen sink. The unit provides endless hot water by heating water only when you turn on the tap. You benefit from a Uniform Energy Factor of 0.81, indicating efficient energy use. Low NOx emissions suggest compliance with strict environmental standards in certain regions. You do not need to wait for a tank to refill. The system responds instantly to demand. Regular maintenance involves checking for gas leaks and ensuring the exterior remains clean. Since it lacks a display or remote in the provided data, you adjust settings via the unit itself. This straightforward interface reduces potential points of failure. You get consistent performance as long as the gas pressure and water flow remain within specified limits. The compact footprint allows for flexible mounting options on exterior walls.
Before You Buy This Unit
Before purchasing the Noritz NR66ODNG, verify your gas line capacity. This unit requires a natural gas supply rated for 140,000 BTU. An insufficient line will reduce performance. Ensure your outdoor space meets the dimensional requirements. The unit stands 26.6 inches tall and weighs 36 pounds. You need a stable mounting surface that can support this weight. Since it lacks a protective finish, consider the local weather. Rain and snow may impact longevity without proper shielding. Check local building codes for outdoor installation rules. Venting requirements must also be confirmed with a professional. This model suits those needing high flow rates for multiple fixtures. It fits well alongside other outdoor units if you prioritize natural gas efficiency. Compare its 6.6 GPM output against your household’s peak demand. If you need lower flow, other options may be more suitable. Regular maintenance ensures the 0.81 UEF rating holds over time.
Check before you buy
- Verify natural gas line capacity supports 140,000 BTU input.
- Confirm outdoor mounting surface can hold 36 pounds.
- Check local codes for exterior tankless heater placement.
- Ensure venting options meet manufacturer specifications.
The product at a glance
Noritz Outdoor Natural Gas Water Heater 6.6 GPM
Best for: outdoor natural gas homes needing 6.6 GPM
- Fuel Type
- Natural Gas
- Flow Rate
- 6.6 Gpm
- BTU
- 140,000 Btuh
- Installation Location
- Outdoor
- Dimensions
- 26.6 x 17.6 x 10.7 inches
- Weight
- 36 pounds
View on Amazon: Noritz Outdoor Natural Gas Water Heater 6.6 GPM Affiliate link
This Noritz outdoor tankless water heater runs on natural gas and delivers up to 6.6 GPM of continuous flow. It provides a maximum heat output of 140,000 Btuh with a 0.81 UEF rating. Designed exclusively for exterior mounting, it frees interior wall space and requires no indoor venting. It suits you if you need moderate outdoor flow capacity.
Pros
- Delivers up to 6.6 GPM continuous water flow
- Provides up to 140,000 Btuh heating output
- Outdoor installation eliminates indoor venting runs
- Low NOx operation with a 0.81 UEF rating
Cons
- Restricted strictly to outdoor installation locations
- Operates only on natural gas rather than liquid propane
Good fit if
- You have an exterior wall space suitable for outdoor mounting.
- You use natural gas as your fuel supply.
- You need peak demand support up to 6.6 GPM.
Skip if
- You require an indoor-mounted water heating unit.
- You run your utilities on liquid propane or electricity.
Verdict: Noritz 6.6 GPM Outdoor Natural Gas Water Heater fits households that require outdoor natural gas heating for flow rates reaching 6.6 GPM.
Specifications side by side
| Spec | Noritz Outdoor Natural Gas Water Heater 6.6 GPM |
|---|---|
| Fuel Type | Natural Gas |
| Flow Rate | 6.6 Gpm |
| BTU | 140,000 Btuh |
| Installation Location | Outdoor |
| Dimensions | 26.6 x 17.6 x 10.7 inches |
| Weight | 36 pounds |
| Color | No Finish |
| Model | NR662-OD-NG |
Frequently asked questions
What is the flow rate of the Noritz NR66ODNG?
This unit delivers 6.6 gallons per minute of hot water. This flow rate supports multiple simultaneous uses, such as a shower and a kitchen sink. It ensures consistent water pressure without the lag associated with storage tanks. You get immediate hot water on demand.
Is this water heater suitable for outdoor installation?
Yes, the Noritz NR66ODNG is designed specifically for outdoor use. It is built to withstand exterior environmental conditions. The listing indicates it lacks a protective finish, relying instead on internal component durability. You should place it in a location that meets local code requirements for exterior appliances.
What fuel type does the Noritz NR66ODNG use?
It operates on natural gas. You must have a natural gas supply line connected to the unit. The system is not compatible with propane unless specifically converted, which is not mentioned in the standard specifications. Ensure your gas line provides adequate pressure for optimal performance.
How big is the Noritz NR66ODNG unit?
The dimensions are 26.6 inches in height, 17.6 inches in width, and 10.7 inches in length. It weighs 36 pounds. These measurements help you plan the mounting space. Ensure your outdoor area has enough clearance for ventilation and maintenance access around the unit.
Can this heater handle cold inlet water temperatures?
The unit has a 140,000 BTU heating capacity, which helps raise water temperature effectively. Higher BTU ratings allow for better performance in colder climates or with colder incoming water. This power ensures you maintain desired output temperatures even when supply water is cold.
What is the model number for this Noritz outdoor heater?
The model number is NR662-OD-NG. This identifier helps you find replacement parts or verify compatibility with your existing gas lines. You should use this exact number when consulting installation manuals or contacting support for technical assistance regarding your specific outdoor installation.
Does the Noritz NR66ODNG require a special finish?
No, the unit does not have a special protective finish listed in the data. It is engineered for exterior exposure without relying on cosmetic coatings. You should still protect it from direct debris impact. The internal components are designed to handle outdoor conditions as intended.