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General Questions
Common questions regarding Noritz or company resources
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Does Noritz sell an all Electric tankless heater?
What kind of tankless water heaters does Noritz sell? Electric? Gas? Propane? Noritz America does not make any “electric only”... -
Can I use Solar Power with a Noritz Tankless?
Yes. Our tankless heaters can be powered by solar power as long as the solar system has (or is converted... -
How much can I save with tankless compared to storage tank?
This chart helps to illustrate the money savings from going tankless. -
Noritz Federal Tax Credit Certificate
*** The most up to date rebate and credit information can be found here: https://www.noritz.com/rebates *** Manufacturer Tax Credit How... -
How Do I Register my Warranty?
You can learn more about warranty registration here:http://www.noritz.com/home-owners/warranty/ Or download the warranty registration form: http://www.noritz.com/u/warranty_card_tankless_7_09.pdf -
What does the term “temperature rise” mean?
The difference between the incoming ground water temperature and the set temperature of the tankless unit. For example, if your... -
Can Noritz Tankless Water Heaters be used as pool heaters?
A Noritz water heater cannot be used as a pool heater due to the chemicals that can be harmful to... -
Can I use PEX piping for my domestic hot water service?
Generally speaking yes you can however please refer to your local codes. -
Why does my water heater turn on momentarily sometimes when no one is using hot water or when someone flushes the toilet?
This could be an issue with the water pressure coming to the heater or a plumbing issue such as cross... -
What is the maximum flow rate allowed through the H2Flow?
Although the H2Flow is capable of serving up to 10 gallons per minute water flow, the ideal maximum flow rate... -
Is the 8-10 gallon storage tank necessary for a recirculation system?
It is not necessary; the 8-10 gallon storage tank alleviates cold water sandwiching effects that occur in some installations. It... -
Is a battery backup supply recommended with your units?
Battery backups are not a required item when installing or using a tankless water heater, however they can be a... -
My heater shuts off while I am in the shower or using the sink in the kitchen, why? There are no error codes on my remote.
This type of problem is typically caused by low water flow. Noritz tankless water heaters have a minimum flow requirement... -
What constitutes a qualified installer?
A qualified installer requirement will vary according to their respective states, county or city. Make sure the installer you choose... -
Can I install my heater in a closet/cabinet?
They can be installed in a mechanical closet as long as there is a sufficient supply of air. To ensure... -
What accessories are available for my Noritz tankless heater ?
Please see below (from 2021 product catalog) or download the product catalog HERE A qualified Noritz installer near you can... -
How much money can I save with a tankless (compared to a storage tank)?
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Hot Water Supply Capacity
Hot water supply performance can be found on the specifications sheet for each heater located on our support site as... -
What is Water Hardness?
Water hardness is the measure of dissolved calcium, magnesium, and other minerals in your drinking water. It is typically measured... -
What size pump should I use on my recirculation system?
Selecting the correct size recirculation pump is a fairly involved process and there is not a “one size fits all”... -
Can a Noritz heater be used with a solar preheat system?
Yes. It is best that the preheat system has a mixing valve to eliminate temperature fluctuations and insure that the... -
How does the tankless unit provide hot water without a storage tank?
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Can I install my remote control thermostat outdoors next to my heater?
Yes, However the remote is water resistant; not water proof. In order to install the remote outdoors, the remote must... -
Can a commercial grade heater be installed in a residential application?
Yes, a commercial grade heater can be installed if necessary in a residential application. Applicable Models Models: ALL COMMERCIAL MODELS -
What is the warranty on Noritz heaters?
The heat exchanger warranty for a Noritz tankless water heater will vary from 3 years up to an industry leading... -
For a multi-system application, is one heater firing all the time?
No, the primary firing heater rotates every 24 hours or 8 hours of combustion time. This ensures even usage of... -
Can I use my old 1/2″ gas line from my old tank water heater installation?
While many of our tankless units can be used with a 1/2″ gas line, there are certain requirements that need... -
Can I install a heater if I’m at high elevation?
Yes, but there are simple adjustments that need to be made if installed above 2,000ft. Please see the installation manual... -
Can I install a tankless heater if I live in a cold climate or freezing area?
The freeze prevention will work as long as there is electrical power. Do not install unit outdoors in climates where...
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