Water Heater Sizes

For a tank style heater household size is a simple indicator of hot water needs.

Water heater sizes. Consider the sliding scale between water heater storage capacity vs. 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. Mobile homes require water heaters specifically made for this type of dwelling. Typically residential water heater sizes range from 40 to 100 gallon tanks.

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. However every family has different water demand requirements. You can estimate the necessary tank capacity in gallons based on the number of people in the house. This is the balance between how much water your water heater can store and how quickly it can reheat the water in its tank.

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

Choosing the right size of water heater also depends on your personal priorities. Utility water heaters usually range in size from 2 5 to 19 gallons. What size water heater do i need. Sizing storage and heat pump with tank water heaters.

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