Water Heater Sizes

Water heater recovery rate.

Water heater sizes.

2 3 fixtures at once you ll need at least 5 gpm. What size water heater do i need. Sizing storage and heat pump with tank water heaters. Mobile homes require water heaters specifically made for this type of dwelling.

You can estimate the necessary tank capacity in gallons based on the number of people in the house. Consequently these are the two most frequently installed sizes. However every family has different water demand requirements. Utility water heaters usually range in size from 2 5 to 19 gallons.

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. For a tank style heater household size is a simple indicator of hot water 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. 1 2 fixtures at once you ll need at least 3 5 gpm.

Choosing the right size of water heater also depends on your personal priorities. 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.

Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs.