2 3 people you ll need at least a 40 gallon capacity tank.
Water heater size for family of 3.
For a tank style heater household size is a simple indicator of hot water needs.
The flow rate through the demand water heater would need to be at least 3 25 gallons 12 3 liters per minute.
For 1 to 2 people.
They provide the same level of performance and will work with electric or gas natural or propane systems.
The good news is that just by following a few guidelines you can find the perfect size water heater.
That s the measure of how much hot water the heater will deliver during a busy hour such as first thing in the morning.
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 size a tankless water heater.
For 2 to 3 people.
2 3 people need a 40 gallon water heater 3 4 people need a 40 50 gallon water heater 5 or more people need a 50 80 gallon water heater now before you make your final decision there is one other consideration to make and it s a big one.
Well to get an accurate answer you d have to calculate out how much hot water you typically use during your busiest hot water using hour.
40 gallons family of 5 or more.
40 gallons family of 3 4.
Before buying a tank water heater most homeowners want to get a rough idea of the water heater size their family needs.
The first factor in choosing a tankless water heater is calculating the size of your hot water heater.
30 gallons family of 2 3.
This is because water heater size directly impacts its cost.
What size water heater do i need.
But if you only need a loose estimate of what size you need versus an exact calculation follow these guidelines.
Family of 1 2.
Determine the home s fhr or first hour rating.
To reduce flow rates install low flow water fixtures.
You can estimate the necessary tank capacity in gallons based on the number of people in the house.
If your space won t accommodate a standard size water heater there are alternatives.
1 2 people you ll need a water tank with at least a 30 gallon capacity.
Simply locate the appropriate water heater sizes on ecomfort using your information.
Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home.
How to determine the size of a water heater tank.
To determine temperature rise subtract the incoming water temperature from the desired output temperature.
