Water Heater Sizes

2 3 fixtures at once you ll need at least 5 gpm.

Water heater sizes.

What size water heater do i need. You can estimate the necessary tank capacity in gallons based on the number of people in the house. For a tank style heater household size is a simple indicator of hot water needs. Mobile homes require water heaters specifically made for this type of dwelling.

Water heater recovery rate. Consequently these are the two most frequently installed sizes. Utility water heaters usually range in size from 2 5 to 19 gallons. Consider the sliding scale between water heater storage capacity vs.

Sizing storage and heat pump with tank water heaters. However every family has different water demand requirements. Choosing the right size of water heater also depends on your personal priorities. 3 4 fixtures at once you ll need at least 7 gpm.

1 2 fixtures at once you ll need at least 3 5 gpm. If your plan to use 5 or more fixtures at once you may need multiple tankless units in sequence. 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.

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.