Rinnai super high efficiency plus 9 8 gpm indoor natural gas tankless water heater.
Tankless gas water heater sizes.
Simply locate the appropriate water heater sizes on ecomfort using your information.
Determine your water flow rates.
Just follow the three simple steps below to choose the right model and size you need.
So you ll need a tankless water heater that can produce at least a 60 degree rise in temperature at 5 2 gallons per minute.
Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise.
How to determine the required size of a tankless hot water heater.
The right size is a tankless water heater that can heat enough gallons of water to a specific temperature per minute to keep up with the demand.
Like a hot water tank for 5 people will require at least a 60 gallon tank.
Looking to purchase a new tankless water heater but having trouble figuring out what size or model you need.
Use our handy calculator to determine your needed flow rate and temperature rise then find models that match your needs.
Choose the right tankless electric water heater for you.
Measure your cold water temperature.
Gallons per minute gpm is the key when it comes to sizing tankless water heaters.
Determine the mounting space.
If you want to upgrade your water heater size from 40 or 50 gallons storage water heater or replace it you won t necessarily need a big tankless water heater.
Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home.
You ll need to raise the incoming water temperature from 40 degrees to 105.
Since tankless water heaters supply endless hot water you don t have to worry about capacity but instead think in terms of water flow rate.
Rheem tankless electric water heaters make it easy to enjoy instantaneous continuous hot water space saving design and significant energy cost savings.