Noritz NRC66DVNG Indoor Condensing Tankless Hot Water Heater
$489.99 price checked August 2026
If you need a high efficiency system with a remote thermostat for easy adjustments, this is the one to price-check.
Where the Noritz NRC66DVNG Fits
The Noritz NRC66DVNG Tankless Water Heater is for homeowners needing high-volume flow who require a 6.6 GPM output for consistent hot water.
Running out of hot water mid-shower happens when a standard tank cannot keep up with multiple fixtures being used at once. This occurs because the volume of water demanded exceeds the heater’s current supply capacity.
The Noritz NRC66DVNG Tankless Water Heater provides a solution by offering a 6.6 GPM flow rate. This capacity exceeds the 3.5 GPM threshold required for a standard shower head, ensuring consistent temperature even during peak usage.
We evaluated the Noritz NRC66DVNG against the other tankless water heater installation options we compared for this category. This review is for budget-conscious shoppers who need a high-efficiency system that includes a remote thermostat and a 6′ power cord.
For a compact electric option, view the ECOTOUCH ECO90 spec breakdown.
How Green Writer picked: we started from the 49 most-reviewed tankless water heater installation listings in our retail dataset, removed duplicates, accessories and off-category products, and 32 qualified. This product is one of 15 from that pool chosen for a full review. Our scores blend buyer satisfaction (60%), price position against comparable products (25%) and rating volume (15%). Specifications come from manufacturer listings and ratings from verified Amazon buyer reviews (data checked August 2026).
The Short Answer on the Noritz NRC66DVNG
Best for: you need a high-efficiency natural gas unit that provides consistent flow for a standard household without the space requirements of a traditional tank.
The Noritz NRC66DVNG is a practical choice at the $489.99 price point.
- Pro: The 6.6 GPM flow rate exceeds the 3.5 GPM threshold required for a standard shower head.
- Pro: It includes a remote thermostat and a 6′ power cord to simplify the control setup.
- Pro: Low NOx and high-efficiency ratings help meet strict environmental and energy standards.
- Con: The 6.6 GPM flow rate falls short of the 10 GPM threshold needed to run two showers and a sink simultaneously.
- Con: As a condensing unit, it requires specific venting and installation handled by a qualified professional to meet local building codes.
Don’t buy this if: your household requires a flow rate higher than 6.6 GPM to support multiple high-demand fixtures at once.
Price assessment: At $489.99, this unit offers a fair price for a high-efficiency condensing model with a 4.3 rating.
Green Writer score: 7.7/10 (data-driven – see “How we picked” above)
Consider the GREATBEAR ECO13 performance review if you need an electric alternative.
Researching different brands? View our ranking of the best condensing tankless hot water heater options.
The Specifications That Matter
| Fuel Type | Natural Gas |
| Flow Rate | 6.6 GPM |
| Efficiency | High Efficiency |
| Ventilation | Vented with Schedule 40 PVC Pipe and Fitting |
| Dimensions | 13.8″W x 23.6″H |
| Low NOx | Yes |
| Included Accessories | Remote thermostat, 6′ power cord |
The Noritz NRC66DVNG provides a 6.6 GPM flow rate, which exceeds the 3.5 GPM threshold required for a standard shower head.
Before You Buy: Noritz NRC66DVNG Checklist
The first thing to check is whether your existing gas line can supply the required BTU demand for a high-efficiency unit like the Noritz NRC66DVNG.
- ☐ Confirm gas line capacity—verify your home’s infrastructure can support the BTU requirements of a 6.6 GPM natural gas unit.
- ☐ Measure venting clearance—ensure there is adequate space for Schedule 40 PVC Pipe and Fitting.
- ☐ Budget for professional installation—hire a qualified installer to manage the venting and gas connections to meet local building codes.
- ☐ Verify power access—ensure a 6′ power cord reach is sufficient for your mounting location.
- ☐ Check remote placement—confirm where you want to mount the included remote thermostat.
You should not buy this product if you intend to perform the venting or gas line upgrades yourself without professional oversight.
Performance: What the Specs Deliver
Low Nox Emissions
Low Nox emissions on the Noritz NRC66DVNG mean the unit reduces the production of nitrogen oxides during combustion. This helps you maintain a cleaner indoor air environment, which is a key consideration for high-efficiency gas appliances in residential settings.
Remote Temperature Control
Remote temperature control on the Noritz NRC66DVNG allows you to adjust the water heat from a convenient location rather than at the unit itself. Because a remote thermostat is included, you can set your preferred temperature without needing to access the heater’s primary housing during daily use.
Vented PVC Compatibility
Vented PVC compatibility means the Noritz NRC66DVNG works with Schedule 40 PVC pipe and fitting. This standard allows for a specific type of ventilation setup that simplifies the material requirements for your installation. You must confirm your local building codes allow for PVC venting before beginning the project, as a qualified installer must perform the actual mounting and venting.
Simultaneous Shower Capacity
The 6.6 GPM flow rate of the Noritz NRC66DVNG provides enough hot water for two showers running at the same time. Since the category threshold for running two showers and a sink simultaneously is 10 GPM, you should verify if your specific plumbing layout allows for the 6.6 GPM output to reach both fixtures without a pressure drop.
How the Noritz NRC66DVNG Compares to Alternatives
The Noritz NRC66DVNG provides a high 6.6 GPM flow rate for a lower price point than several high-output alternatives in our comparison.
- The Noritz NRC66DVNG costs $140 less than the CAMPLUX Natural Gas Tankless Hot Water Heater.
- The Noritz NRC66DVNG offers a 6.6 GPM flow rate compared to the 3.9 GPM of the CAMPLUX Classic RV Tankless Water Heater.
- The FOGATTI Natural Gas Tankless Water Heater has a higher 7.5 GPM flow rate but costs $200 less than the Noritz NRC66DVNG.
- The Noritz NRC66DVNG ranks as the 2nd highest-rated option among the 6 products we evaluated.
- The CAMPLUX Climatech 5 Tankless Propane Water Heater provides a higher 8.4 GPM flow rate but costs $109.01 more than the Noritz NRC66DVNG.
If you need the highest possible flow rate for a large household, the CAMPLUX Climatech 5 Tankless Propane Water Heater is the better choice despite the higher cost.
You may also want to see our full review of the Noritz NRC66DVLP.
Where This Price Sits
The Noritz NRC66DVNG sits $7 below the $497 average of the similar tankless water heater installation products we compared. At the $489.99 price point, you receive a high-efficiency unit with a 6.6 GPM flow rate and low NOx emissions. You gain the ability to produce endless hot water and a remote thermostat, though you may find fewer auxiliary features than units priced toward the $699.99 upper limit of the comparison group.
To determine your monthly operating costs compared to a traditional tank, check the unit’s specific BTU input and your local gas rates, as high-efficiency ratings typically reduce monthly fuel consumption by lowering heat loss during the heating process.
Where this sits in the buyer data: Among the 31 products screened for this category, this one’s 4.3 rating places it #14, on 118 ratings – below the 170-rating median of that group, so treat the average as less settled than its comparables. On price it undercuts 20 of them.
The Noritz NRC66DVNG: Remaining Questions
Does the Noritz NRC66DVNG make a lot of noise or vibrate against the wall?
The Noritz NRC66DVNG provides a 6.6 GPM flow rate, but the technical specifications do not list a specific decibel rating or vibration level. You should confirm the operational noise level with a local distributor or check user reviews for specific feedback on wall mounting vibrations during high-demand periods.
Is the Noritz NRC66DVNG suitable for high-efficiency needs?
Yes, this unit is a High Efficiency model featuring Low Nox technology to meet modern environmental standards. The Noritz NRC66DVNG supports a 6.6 GPM flow rate, which exceeds the 3.5 GPM threshold required for a standard shower head.
Does the Noritz NRC66DVNG include a remote controller?
Yes, a remote thermostat is included with the Noritz NRC66DVNG to allow for convenient temperature and flow adjustments. The unit also comes with a 6′ power cord for electrical connection.
Is the Noritz NRC66DVNG a good value for the price?
If you are looking for a budget-friendly entry into on-demand heating, the $489.99 price point is competitive for a high-efficiency unit. The Noritz NRC66DVNG holds a 4.3 rating from 118 buyers, indicating a solid performance-to-cost ratio for residential use.
Is the Noritz NRC66DVNG Right for You?
The Noritz NRC66DVNG suits 5 kinds of buyer and is the wrong choice for 4 jobs, listed below with the reason for each.
Who the Noritz NRC66DVNG is for, and what it does well
Who the Noritz NRC66DVNG suits
- Homeowners in small apartments — the compact indoor design and 6.6 GPM flow rate fit small living spaces
- Eco-conscious homeowners — the high efficiency and low NOx ratings reduce environmental impact
- DIY home renovators — the included 6′ power cord and remote thermostat simplify the installation process
- Small families — the endless hot water supply ensures consistent temperature for multiple showers
- Property managers — the natural gas fuel type and durable construction suit multi-unit residential upgrades
What the Noritz NRC66DVNG handles well
- Back-to-back showers — the endless hot water spec
- Kitchen sink dishwashing — the 6.6 GPM flow rate
- Eco-friendly heating — the high efficiency and low NOx rating
- Remote temperature control — the included remote thermostat
- Indoor utility room installation — the vented with Schedule 40 PVC pipe design
What the Noritz NRC66DVNG is the wrong choice for
- Large commercial laundries — the 6.6 GPM flow rate limit
- High-volume industrial kitchens — the 6.6 GPM flow rate limit
- Propane-fueled homes — the natural gas fuel type requirement
- Outdoor installations — the indoor condensing design
What to budget alongside the Noritz NRC66DVNG, and what to skip
Worth buying at the same time
- Natural gas supply line — the natural gas fuel type requirement
- Schedule 40 PVC piping — the vented with Schedule 40 PVC pipe requirement
- Wall mounting bracket — the indoor condensing unit requires a secure mounting surface
- Gas shut-off valve — the natural gas fuel type requires a dedicated safety shut-off
- Water line connectors — the 6.6 GPM flow rate requires proper plumbing hookups
What you can skip
- External thermostat — the remote thermostat is already included
- Standard power extension cord — the 6′ power cord is included
- Propane conversion kit — the unit is specifically for natural gas
Selecting the right power source is vital, so see how to choose your fuel type for tankless water heaters.
Where to Buy the Noritz NRC66DVNG
These retailers sell Tankless Water Heater Installation generally – we do not track which of them has this particular model in stock, so check availability and the current price with the retailer before making a trip.
- Ferguson (online and physical stores) — specialist trade accounts and professional-grade selection
- SupplyHouse (online only) — specialist focus on plumbing components and wholesale pricing
- Build.com (online only) — large online catalog with detailed technical specifications
- Home Depot (online and physical stores) — large selection of major brands and in-store pickup
- Lowe’s (online and physical stores) — wide inventory of residential units and local availability
- Amazon (online only) — extensive variety of models and fast shipping options
Final Verdict on the Noritz NRC66DVNG
You need a high-efficiency natural gas solution that provides a 6.6 GPM flow rate for a standard home while keeping costs low. The Noritz NRC66DVNG is the right choice for this requirement at a price of $489.99.
The Noritz NRC66DVNG ranks well among the options we compared, maintaining a 4.3 rating from 118 buyers while providing low NOx emissions and a remote thermostat for consistent temperature control.
Skip it if: you require a flow rate higher than 6.6 GPM to support multiple simultaneous fixtures or if your local building codes require a non-condensing unit.
Every Tankless Water Heater guide in this category
- Choosing the Best Natural Gas Tankless Hot Water Heater
- The Propane Tankless Hot Water Heaters That Work Best for Home Use
- Which Outdoor Tankless Hot Water Heater Is Best?
- Best Condensing Tankless Hot Water Heaters
- Electric Point of Use Water Heaters Compared
- Choosing the Best Tankless Hot Water Heater for High Flow