Sizing Charts For Noritz

TANKLESS HOT WATER HEATER - ESTIMATION GUIDE

Noritz prides itself on being the best tankless water heater manufacturer to supply all of your residential hot water needs. To determine which tankless water heater model is right for you, you first need to identify your peak hot water usage.  The estimation chart shown can guide you to find the right sized residential tankless hot water heater for your home. 

 

Each showerhead illustrated below is about 2.5 GPM, which is roughly what a standard showerhead, bathroom sink, dishwasher, and washing machine would use. To meet all residential hot water heater needs, these tankless hot water heaters can be linked together to provide on-demand hot water for every application. The number of showerheads next to each series shows the heater's capacity of providing hot water simultaneously.

 

PLEASE NOTE:
The chart is for ESTIMATION ONLY.  Before installation, have a registered plumber size the application according to Noritz Specification Sheets to ensure the model can accommodate your hot
water needs.
 

Noritz Tankless Hot Water Heater Sizing Guide

 

FLOW RATE

 

The flow rate of a tankless water heater depends upon the temperature of the incoming water.  In general, the warmer the incoming water temperature is, the more flow you will get from a tankless water heater.  This flow rate can be simply determined by calculating the temperature rise.  The temperature rise is basically how much you need to heat the water to reach the desired temperature setting.  For example, if you set the heater's temperature to 105oF and your area's ground water temperature  is 60oF, the difference is 45oF in temperature rise.  It is always recommended that you choose a residential tankless hot water heater based on the colder seasons so that you will get the peak demand you need for hot water.


PLEASE NOTE:

The chart is for ESTIMATION ONLY.  Actual temperature of your incoming water will vary by geographic location. Before installation, have a registered plumber size the application according to Noritz Specification Sheets. As the leading tankless water heater manufacturer, we create these sheets to ensure all of your residential applications are met, every time.

 

 

Water Flow Rate Chart for Noritz Tankless Water Heaters