NRC71 Series Residential Tankless Water Heaters

by Noritz

Standard tank-type water heaters consume energy around the clock to keep the water in the tank hot, yet you don't use hot water 24 hours a day. Noritz Tankless water heaters provide a continuous flow of hot water, so there's no need to suffer through a cold shower if you're the last one in the shower. Having a Noritz tankless water in your house ensures the hot water is always there when you need it, and uses much less energy producing it. The more energy we can save through energy efficiency, the more we help save our natural resources, reduce greenhouse gases and the risks of global warming.

Noritz NRC71 Series Condensing Tankless Water Heaters

Replaces old series NRC711 - same great features with a new part number
  • Perfect choice for homes with 1-3 showers providing an endless supply of hot water to an entire home
  • Standard single flame burners maximize output and provide temperature stability while maintaining low emissions
  • Space and energy efficient - wall-hung unit with fully modulating dual burner design precisely tracks the needs of the system
  • Indoor models (DV) include a 6 ft. power cord for inside home installation and are designed to be vented horizontally or vertically and include special flue adapters that are compatible with 3" Schedule 40 and Schedule 80 PVC or CPVC pipe
  • Outdoor units (OD) are designed for installation outside of the home and require no additional venting as a horizontal vent is built right into the unit
  • High performance single flame burners provide optimum combustion to maximize heat output, maintain low emissions and ensure temperature stability
  • Fully modulating design and automatic air regulator monitors internal temperature and adjusts burner according to need, providing accurate and efficient response to hot water demands
  • Direct electronic ignition means no standby pilot light to waste energy
  • Built in freeze prevention device for additional peace of mind
  • Thermal fuse offers automatic overheat protection
  • High elevation adjustment compensates for lower air pressures to maximize proper combustion and efficient heat output
  • Temperature lockout - safety feature function of optional remote control - limits maximum temperature output for scald protection
  • View more specifications

Flow Rates for Noritz NRC71-DV and NRC71-OD
Temperature Rise (°F) 30 40 45 50 60 70 80 90 100
Flow Rate (GPM) 7.1 7.1 6.5 5.8 4.9 4.2 3.7 3.2 2.9

Model Number Description Natural Propane
NRC71-DV Indoor Tankless Water Heater - Direct Vent $1,295.62 $1,295.62
NRC71-OD Outdoor Tankless Water Heater - Outdoor Vent $1,295.62 $1,295.62

Due to size/weight and to ensure safe delivery, certain items ship by truck and have an additional shipping fee per freight item.
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Accessories for Noritz Tankless Water Heaters

Remote Controller

Recommended accessory by the manufacturer, the remote controller allows the user to access the maintenance menu, view error codes, and adjust temperature settings.
Image Description Size Price & Quantity
Remote controller cord Remote Controller 10 Feet $151.22
Remote Controller 26 Feet $160.39

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Pipe Cover

A pipe cover not only hides unsightly plumbing, it can help protect your plumbing pipes from freezing temperatures.
Image Description Price & Quantity
Pipe cover Pipe Cover for Noritz NRC71 Tankless Water Heater $103.56

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Brass Pressure Relief Valves

Image Description Size Price & Quantity
Pressure relief valve Brass Pressure Relief Valve
  • A pressure relief valve is required for all tankless water heaters. In some areas, a temperature and pressure relief valve is required. Check your local plumbing code for more information
3/4" FIPS x 3/4" MIPS $18.29 Enter a quantity and

Brass Temperature & Pressure Relief Valves

Image Description Size Material Price & Quantity
Pressure and temperature relief valve Brass Temperature and Pressure Relief Valve 3/4" FIPS x 3/4" MIPS FOR Potable Water $94.05 Enter a quantity and
3/4" FIPS x 3/4" MIPS NOT FOR Potable Water $14.93 Enter a quantity and

"The Isolator" Isolation Valves

Complete inlet/outlet valve system that provides everything you need for a secure installation including full port testing and flushing of the system with easy to install union connections. 2014 Federal Safe Drinking Water Act compliant.
Image Description Size Price & Quantity
Isolation valve set Isolation Valve - Set   (Hot & Cold)  3/4" FIP Union x 3/4" FIP $121.23
Isolation valve set Isolation Valve - Set   (Hot & Cold)   3/4" FIP Union x 3/4" Sweat $122.18

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Gas Connectors

Image Description Size Price & Quantity
Plastic coated stainless gasflex Stainless Gasflex 1" OD (3/4" ID) x 24"
with adapter to 3/4" FIP x 3/4" MIP
Gas ball valve Gas Ball Valve 3/4" $10.18

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Ball Valves

Image Description Size Price & Quantity
3/4inch ball valve FIP Ball Valve   3/4" FIP $14.42
3/4inch ball valve sweat Ball Valve   3/4" Sweat $13.36
Stainless steel nipple adapter Stainless Steel Nipple Adapter 3/4" MIP x 1-1/2" Long $5.35

 Order 10, 50, 100 or more of the same item for additional savings!
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Flexible Corrugated Water Flexes

Image Description Material Size Length Price & Quantity
Stainless steel water heater flexes Flexible Corrugated Water Flex Stainless Steel 3/4" FIP x 3/4" FIP 18" $9.79 Enter a quantity and
3/4" FIP x 3/4" FIP 24" $11.36 Enter a quantity and
Copper / Stainless Steel 3/4" FIP x 3/4" Nominal Sweat 18" $11.14
3/4" FIP x 3/4" Nominal Sweat 24" $13.01 Enter a quantity and

Related Items and Accessories

Please note: For potential safety reasons, we do not recommend using PVC to vent gas tankless water heaters. For the best results, we recommend using Category 3 stainless steel gas vent pipe for all gas tankless water heaters.

Common Plumbing Terms
FIP Female Iron Pipe (NPT threads)
MIP Male Iron Pipe (NPT threads)
NPT National Pipe Thread
FNPT Female National Pipe Thread
MNPT Male National Pipe Thread
Nom. Nominal: Used to describe copper pipe and fittings in plumbing. Refers to the inside diameter of the pipe which varies by thickness of the pipe
Sweat Copper pipe solder fitting

Frequently Asked Questions

Q. "How does a tankless heater provide hot water without a storage tank?"
A. Tankless water heaters heat on demand. The water is heated as it flows through the unit. Automated valves control water and gas flow so that your water comes out at the temperature you set it to.

Q. "Your products specify the 'temp. rise' based on the GPM flow; what do you mean by this?"
A. Temperature rise is the amount the heater raises the temperature of the incoming water, based on the flow rate shown of that water.

Q. "What's the difference between a conventional flue and a direct vent?"
A. A conventional flue is what most people are familiar with. It typically consists of a double-wall flue pipe going from the top of the heater through the roof, venting outside. The fixture draws its combustion air from the space around it (utility room, garage, hallway, etc.). A direct-vent unit not only vents exhaust to the outside but also draws its combustion air through a specially designed pipe from the outside via an adjacent wall.

Q. "How does the Water Heater Scale Inhibitor System prevent corrosion?"
A. It forms a thin protective layer on the inside of pipes and metal parts. This film or layer is microscopic in thickness and will not build up over time.

Q. "How does a condensing tankless water heater differ from a traditional tankless water heater?"
A. A traditional tankless water heater has one burner assembly that heats the water as it passes back and forth through one heat exchanger. A condensing tankless water heater uses two heat exchangers. Water is heated as it passes through a primary heat exchanger and also a secondary heat exchanger. The secondary heat exchanger is positioned above the primary heat exchanger and captures the heat from the exhaust gas used during the heating process of the primary heat exchanger. The incoming water is plumbed to enter up through the secondary heat exchanger first, allowing the incoming water to be preheated before it flows into the primary heat exchanger.

Q. "What are the best reasons to install a Scale Inhibitor System?"
A. A Scale Inhibitor System helps protect the system by reducing scale buildup and adding to the longevity and efficiency of the heater.

Q. "What do you mean by commercial grade heat exchanger?"
A. This Noritz tankless hot water heater has a heat exchanger made with Type K copper piping, which is 25% thicker than the average heat exchanger in most tankless water heaters. Since the heat exchanger is what conducts the heat from the burner to the water, it is subject to a lot of stress. Having thicker copper means that the unit is more durable and will heat more water before the heat exchanger needs to be replaced. This Noritz residential tankless water heater has a 12 year limited heat exchanger warranty for residential use.

Q. "Will an instantaneous water heater save me money on my utility bills?"
A. In many applications you can see a savings. There are some variables that could reduce the amount you save. One example is you will not run out of hot water, so longer showers could cut into your savings. Also, the cost of electricity, propane and natural gas in your area will affect the amount of money saved. The higher the cost for the energy type used to heat your water, the quicker you can recover the higher initial cost of installing a tankless versus tank style water heater.

  • You will never run out of hot water. "You want an hour long shower? No problem!"
  • Electric units can be installed at the point of use.
  • You're not paying energy costs to heat water 24 hours a day.
  • Our electric units don't require a T&P valve (no tank!) - if code allows.
  • Installing a tankless water heater can indeed be a bonus to the environment. (Why choose wastefulness when we're talking about finite natural resources?)
  • They all need a minimum flow rate & pressure to turn on.
  • Electric units need heavy gauge wire, while gas units need a much larger, special flue pipe and larger gas supply than a conventional water heater.
  • At times they can produce very hot water. It's easier to get scalded - but this is easily mitigated with anti-scald valves.
  • With some brands, parts are hard to find (not a negative if you originally purchase from us, as we like to carry parts for the units that we sell).
Tankless water heaters have their place. They're not "the answer" to every hot water need, but if they're used correctly they can be the solution to many of them.

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