What Size Tankless Water Heater

The temperature of water entering the unit groundwater temp the desired temperature of water exiting the unit together these 2 items determine the temperature rise required for the tankless water heater and.

What size tankless water heater. Because sizing a tankless water heater is based on 3 things. Looking to purchase a new tankless water heater but having trouble figuring out what size or model you need. The required hot water flow rate based on shower heads and faucets. Tankless water heater sizing calculator.

Where are you located. As an example i will show you what came out for me. Use our sizing calculator to determine your. Just follow the three simple steps below to choose the right model and size you need.

Electric units have measurements in the 10 inch high to 7 inch wide range while gas fired. I live in boston so my groundwater temperature is around 47 f. Tankless water heater sizing calculator. And your temperature rise which is determined by your incoming water temperature subtracted from your hot water setting.

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. Rheem tankless electric water heaters make it easy to enjoy instantaneous continuous hot water space saving design and significant energy cost savings. Simply locate the appropriate water heater sizes on ecomfort using your information. What size tankless water heater depends on your gpm at peak hot water demand.

Flow rate and temperature rise. Tankless water heater sizing calculator. Tankless water heaters are rated by the maximum temperature rise possible at a given flow rate. Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home.

Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise. Therefore to size a demand water heater you need to determine the flow rate and the temperature rise you ll need for its application whole house or a remote application such as just a bathroom in your home. Choose the right tankless electric water heater for you. Tankless water heaters are much smaller than units with a storage tank allowing them to be wall mounted.