For tankless water heaters the key criterion is hot water flow rate.
Water heater sizes dimensions.
Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home.
For tank water heaters the key criterion is hot water storage capacity.
Choosing the right size of water heater also depends on your personal priorities.
2 3 fixtures at once you ll need at least 5 gpm.
The rheem performance tankless electric water heater 8 8 gpm weighs 22 7 lb 10 3 kg and has a maximum flow rate of 8 8 gallons per minute.
To properly size a storage water heater for your home including a heat pump water heater with a tank use the water heater s first hour rating.
Sizing is the technique that matches the capacity of the hot water source to the needs of the homeowners.
3 4 fixtures at once you ll need at least 7 gpm.
Consider the sliding scale between water heater storage capacity vs.
Sizing storage and heat pump with tank water heaters.
Simply locate the appropriate water heater sizes on ecomfort using your information.
The first hour rating is the number of gallons of hot water the heater can supply per hour starting with a tank full of hot water.
Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise.
What size of water heater do you need.
The rheem performance tankless electric water heater 8 8 gpm has an overall height of 18 25 46 4 cm width of 21 625 54 9 cm and depth of 3 5 8 9 cm.
Based on average ground water around 50 degrees here are the sizes you would need for a tankless unit based on your usage.