Water Heater Sizes

Consider the sliding scale between water heater storage capacity vs.

Water heater sizes.

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. If your plan to use 5 or more fixtures at once you may need multiple tankless units in sequence. Choosing the right size of water heater also depends on your personal priorities. Mobile homes require water heaters specifically made for this type of dwelling.

Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs. 1 2 fixtures at once you ll need at least 3 5 gpm. Typically residential water heater sizes range from 40 to 100 gallon tanks. 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.

Consequently these are the two most frequently installed sizes. 3 4 fixtures at once you ll need at least 7 gpm. You can estimate the necessary tank capacity in gallons based on the number of people in the house. However every family has different water demand requirements.

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. What size water heater do i need. Utility water heaters usually range in size from 2 5 to 19 gallons.

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