Consider the sliding scale between water heater storage capacity vs.
Water heater sizes.
Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs.
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.
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.
The largest of these miniature units can also be used to provide hot water to secondary bathrooms that may be situated far from your home s main water heater.
3 4 fixtures at once you ll need at least 7 gpm.
Typically residential water heater sizes range from 40 to 100 gallon tanks.
Choosing the right size of water heater also depends on your personal priorities.
Water heater recovery rate.
This is the balance between how much water your water heater can store and how quickly it can reheat the water in its tank.
Utility water heaters usually range in size from 2 5 to 19 gallons.
However every family has different water demand requirements.
What size water heater do i need.
For a tank style heater household size is a simple indicator of hot water needs.
1 2 fixtures at once you ll need at least 3 5 gpm.
Consequently these are the two most frequently installed sizes.
2 3 fixtures at once you ll need at least 5 gpm.
Sizing storage and heat pump with tank water heaters.