No.  This is a common misconception of tankless water heaters.  A tankless water heater does heat water on-demand instantly, but just like a tank water heater, it will take the same amount of time for the hot water to travel through the plumbing inside your home.  If you would like to get instant hot water, there are recirculation pump systems available to hook-up to your tankless water heater.  Please ask your installer to see what options you may have in getting instant hot water in your home.

Yes.  Tankless water heaters do need a larger gas line since its required Btus are higher than tank water heaters.  The reason why the Btus are higher is because it needs the energy to heat the water to your set temperature in mere seconds.  The actual gas line upgrade size will be depend on which tankless model you choose and the distance from the gas meter.

No.  The amount of energy or Btus required to heat water is the same.  A simple way of explaining this is when you boil a pot of hot water on your stove.  If you were to boil two identical pots of water, but one is on high heat and the other on low heat, the amount of Btus required to boil the water is exactly the same.  The only difference is the amount of time it takes for the water to boil.  So think of the tankless water heater as the high heat and the tank water heater as the low heat.  The energy savings comes in where tankless water heater has a higher energy efficiency and only turns on to heat water when you need it.  Whereas a tank water heater is less energy efficient and wastes gas by regularly heating the water in the tank to maintain the set temperature.

Our tankless water heater's electric power requirement is 120V AC, which is the standard power outlet in U.S. homes. Some local codes have specific requirements on the electric connection.  For example, some local codes do not allow extention cords when connecting to the power outlet.  Our tankless heaters only come in gas models (natural gas or propane) to heat the water, but electricity is required for the digital remote and to power the PC board, which is the brain of the heater.  Also since there is no stand-by pilot light, it uses an electric direct ignition.  Electricity consumption is very minimal.

No. By code, tankless water heaters must use Category III stainless steel venting.  Category III venting is corrosion resistant and gas tight.  The venting must be corrosion resistant because a slightly acidic condensate is formed during combustion.  This condensation can eat away at your current vent pipe’s galvanized metal and cause major damage to your tankless water heater's internal components.  More importantly, the venting must be gas tight to avoid carbon dioxide leakage.  Tankless heaters use a powered exhaust fan to push gas out, as opposed to tank water heaters which use natural draft.

No.  Unfortunately we do not offer any electric tankless heater models for homeowners that only have electricity.  We only offer natural gas and propane models.  Our tankless water heaters are designed for the whole-house, meaning our units can provide enough hot water for an entire home.  There are electric tankless water heaters available on the market, but typically a single unit's output is usually not enough for an entire home.  Other disadvantages include the large amount of energy consumption that is required to heat the water and it usually takes longer to reach the hot water temperature level at start-up.  In areas where there is no gas available, some gas companies do offer gas lines to be installed to your home.  We have heard of gas companies in certain areas to offer free gas line installation to homeowners in their service regions.

No.  It is not required to install a water softner, but if you do live in an area that has very hard water it will eventually harm the performance of your tankless water heater.  Some things you can do is to add a water treatment system such as our ScaleShield which prevents scale from forming inside the heater's copper piping, a water softner system (non-reverse osmosis type), or do a routine flush maintenance (frequency depends on your water hardness level).  The way you can tell if you have hard your water is by either contacting your city's water department for their water test report, testing your water by purchasing a water hardness kit (fairly inexpensive), or by looking at your water fixtures to see if you have mineral build-up.

Our tankless heaters are designed for an entire home.  Our smallest unit can provide up to 6.6 gallons per minute to our largest unit which provides up to 13.2 gallons per minute.  Some heaters have the Quick-Connect feature which allows identical heaters to be linked to double its output.  So how do you figure out how many gallons of hot water you need for your home?  Here are some helpful tips:

1. How much hot water do you use at the same time?  A standard shower head, dishwasher, washing machine is about 2.5 gallons per minute each.  If you typically use all three of these at the same time, that would require 7.5 gallons per minute or the N-0751M series.  Bath tubs are usually 6-8 gallons per minute, and rain head showers and body sprays definitely requires more hot water than a standard shower head.  So if you demand more hot water you will need a larger sized unit or another identical unit with the Quick-Connect feature.

2. Remember to pick the right size unit for realistic situations rather than for your current situation.  For example if you have 3 showers in your home, but you only use one shower, you might think the smallest unit is plenty for your situation.  The problem is if you have visiting guests over or if ever sell your home, the hot water demand may be different and the heater may be undersized, possibly causing difficulty in selling your home.

3. Here's the most important tip to understand.  Tankless water heater's gallons per minute output depends on your tap water's temperature.  Simply put, the colder the water the less output you will get from the heater.  This is because the colder tap water temperature requires the heater to heat the water more than if it was heating water that is warmer.  So we recommend choosing your heater based on your winter season's tap water temperature.  This way you are covering the worse case scenario for your area (consult with your plumber or contractor for final application sizing).  Please click here to view the sizing chart and click here for the flow rates.

No.  Unfortunately, tankless heaters have not been approved for these applications.

Our units are not sold through retailers.  They are only available at professional wholesale distributors.  Tankless water heaters require gas line upgrades, stainless steel vent runs as well as local code requirements.  Therefore our heaters should only be installed by a licensed professional.  Warranty will be void if our units are not installed by a licensed installer.

Noritz tankless water heater comes standard with a remote digital temperature controller, which allows you to adjust the water temperature. The controller is optional only on the N-0531S and N-0631S models. For other models, the control panel can be wired and installed in a remote location; up to 300 feet away from the unit. The water temperature is displayed on the easy-to-use control panel, and can be adjusted using the up and down buttons.

New safety lock-out feature requires the user to follow these steps to go above 120^oF:

1. To go above 120^oF you must first turn off the power on the remote.

2. Press and hold the flow meter alarm set button until a sound is heard (2 sec.).

3. Change the temperature using the setting buttons to go up to 140^oF (WARNING: temperatures above 125^oF are scalding!).

4. Set the power button back to on.

Note: If you want to go above 140^oF, please contact your installer.

Noritz manufactures Natural Gas and Propane models only.

No.  Noritz does not sell products online/retail nor do we give any authorization to online merchants to sell our products.  If a Noritz product is not purchased and installed through a licensed installer, the warranty will be void.  This strict policy is in place to protect the end-purchaser and the quality level of our products.