Water Heater Sizes

Consider the sliding scale between water heater storage capacity vs.

Water heater sizes.

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

For a tank style heater household size is a simple indicator of hot water needs. However every family has different water demand requirements. 3 4 fixtures at once you ll need at least 7 gpm. Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs.

Sizing storage and heat pump with tank water heaters. Typically residential water heater sizes range from 40 to 100 gallon tanks. What size water heater do i need. 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.

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