Storage tank hot water heaters are sized based on btu input and capacity in gallons.
Water tank sizes and dimensions.
For a tank style heater household size is a simple indicator of hot water needs.
You can estimate the necessary tank capacity in gallons based on the number of people in the house.
If you use all the water in the tanks they can be refilled on the next rain cycle or water can be hauled in.
1 or 2.
Sizing storage and heat pump with tank water heaters.
If your family size is 5 or more you ll need an 80 gallon tank electric or a 50 gallon tank natural gas or liquid propane.
Dimensions in feet ft or inches in or metric dimensions in meters m or centimeters cm.
Just be aware that when one speaks of a 40 gallon tank for example it may be 40 gallon long tank a 40 gallon breeder tank each with different aquarium dimensions.
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.
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.
Assumes inside dimensions of the tank.
The aquarium dimensions of breeder tanks vary based on the gallon size and water volume but they generally are deeper in terms of width.
3 4 people you ll need at least a 50 gallon capacity tank electric or a 40 gallon capacity tank natural gas or liquid propane.
With flat tank heads calculator use.