Average Water Heater Size Gallons

For 1 to 2 people.

Average water heater size gallons.

In most cases you would need a 50 gallon tank water heater in this situation considering most 40 gallon models have a lower fhr. Well to get an accurate answer you d have to calculate out how much hot water you typically use during your busiest hot water using hour. 2 3 people you ll need at least a 40 gallon capacity tank. 5 or more people need a 50 80 gallon water heater.

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

This tank size based on the scenario in step 2 is adequate for the peak hourly hot water requirements. Together that equals 72 gallons of hot water needed. Tankless water heaters capacities aren t measured in gallons stored but in flow rates. Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs.

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. A tankless water heaters flow rate should be equal to your family s peak demand. Typically residential water heater sizes range from 40 to 100 gallon tanks. To determine what size tankless water heater.

1 2 people you ll need a water tank with at least a 30 gallon capacity. 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. 30 40 gallons for 2 to 3 people. Utility water heaters usually range in size from 2 5 to 19 gallons.

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. 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. If you re going with a storage tank water heater here s a rough guide for storage tank capacity. 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. Consequently these are the two most frequently installed sizes. However every family has different water demand requirements.