Water Heater Sizes

3 4 fixtures at once you ll need at least 7 gpm.

Water heater sizes.

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. Utility water heaters usually range in size from 2 5 to 19 gallons. For a tank style heater household size is a simple indicator of hot water needs. However every family has different water demand requirements.

Mobile homes require water heaters specifically made for this type of dwelling. Consider the sliding scale between water heater storage capacity vs. 1 2 fixtures at once you ll need at least 3 5 gpm. You can estimate the necessary tank capacity in gallons based on the number of people in the house.

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

What size water heater do i need. 2 3 fixtures at once you ll need at least 5 gpm. This is the balance between how much water your water heater can store and how quickly it can reheat the water in its tank. Sizing storage and heat pump with tank water heaters.

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