Hot Water Heater Sizes

Utility water heaters usually range in size from 2 5 to 19 gallons.

Hot water heater sizes. Hot water will be delivered faster when the water heater is closer to the fixture because the length of piping in between the two is shorter. The flow rate through the demand water heater would need to be at least 3 25 gallons 12 3 liters per minute. Figure the home s maximum occupancy as the number of bedrooms plus 1. For example you might not be able to run more than one shower at a time without someone getting an arctic blast of cold water.

2 3 fixtures at once you ll need at least 5 gpm. 1 2 fixtures at once you ll need at least 3 5 gpm. Based on average ground water around 50 degrees here are the sizes you would need for a tankless unit based on your usage. However every family has different water demand requirements.

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. For a tank style heater household size is a simple indicator of hot water needs. Consequently these are the two most frequently installed sizes. You can estimate the necessary tank capacity in gallons based on the number of people in the house.

Mobile homes require water heaters specifically made for this type of dwelling. 3 4 fixtures at once you ll need at least 7 gpm. Typically residential water heater sizes range from 40 to 100 gallon tanks. Having a water heater that is too small will result in it not being able to produce enough hot water for your household demand.

In this case we have 4 bedrooms so we add 1 and get 5. In fact it is the most important part of choosing a new unit for your home. For example a family of 5 or more could live very comfortably on a 30 gallon tank water heater while a household of 2 might find that a 30 gallon tank can t provide enough hot water for their needs. Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs.

For example let s say you expect to simultaneously run a hot water faucet with a flow rate of 0 75 gallons 2 84 liters per minute and a shower head with a flow rate of 2 5 gallons 9 46 liters per minute. The temperature of the piping between the water heater and the location of the water fixture is another factor that may impact hot water delivery.