Average Water Heater Size Gallons

Together that equals 72 gallons of hot water needed.

Average water heater size gallons.

But if you only need a loose estimate of what size you need versus an exact calculation follow these guidelines. An average shower will be between 104 106 and uses 2 6 gallons of water. This tank size based on the scenario in step 2 is adequate for the peak hourly hot water requirements. Tankless water heaters capacities aren t measured in gallons stored but in flow rates.

To determine what size tankless water heater. In this instance you would need a water heater with a first hour rating of at least 72 gallons before you run out of hot water during that 1 hour period. 2 3 people you ll need at least a 40 gallon capacity tank. Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs.

You can estimate the necessary tank capacity in gallons based on the number of people in the house. In most cases you would need a 50 gallon tank water heater in this situation considering most 40 gallon models have a lower fhr. Small storage tank water heaters known as point of use or utility water heaters are good choices for adding hot water to outbuildings shops or garages. For 1 to 2 people.

Sizing storage and heat pump with tank water heaters. 30 40 gallons for 2 to 3 people. 3 4 people need a 40 50 gallon water heater. Choose a hot water heater with a tank size in the range of 50 to 60 gallons on the fhr label.

Utility water heaters usually range in size from 2 5 to 19 gallons. However every family has different water demand requirements. Assuming your water temperature is 40 coming into your home and you want to produce enough hot water to run 2 showers at the same time what temperature rise would you need to produce to accomplish this. 5 or more people need a 50 80 gallon water heater.

Typically residential water heater sizes range from 40 to 100 gallon tanks. For a tank style heater household size is a simple indicator of hot water needs. What size water heater do i need. A tankless water heaters flow rate should be equal to your family s peak demand.

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. If you re going with a storage tank water heater here s a rough guide for storage tank capacity. Consequently these are the two most frequently installed sizes.