Average Water Heater Capacity

Typically residential water heater sizes range from 40 to 100 gallon tanks.

Average water heater capacity.

Simply locate the appropriate water heater sizes on ecomfort using your information. Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs. Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise. 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.

On average gas fired heaters are more efficient and heat the water. 3 4 people need a 40 50 gallon water heater. 5 or more people need a 50 80 gallon water heater. But if you only need a loose estimate of what size you need versus an exact calculation follow these guidelines.

If you re going with a storage tank water heater here s a rough guide for storage tank capacity. How to determine the required size of a tankless hot water heater. 2 3 people need a 40 gallon water heater. For 1 to 2 people.

Sizing storage and heat pump with tank water heaters. Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. Consequently these are the two most frequently installed sizes. For a tank style heater household size is a simple indicator of hot water needs.

Tankless water heaters come in two types gas or electric. 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. Water heaters running on 120 volt power have a long recovery time which is impractical for most households. Tankless water heaters capacities aren t measured in gallons stored but in flow rates.

You can estimate the necessary tank capacity in gallons based on the number of people in the house. Utility water heaters usually range in size from 2 5 to 19 gallons. However every family has different water demand requirements. 1 2 people you ll need a water tank with at least a 30 gallon capacity.

For 2 to 3 people. 120 volt elements consume 1125 watts while residential 240 volt heaters use 4 500 watts. A tankless water heaters flow rate should be equal to your family s peak demand.