Hot Water Heater Sizes

Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs.

Hot water heater sizes.

Sizing storage and heat pump with tank water heaters. For 1 to 2 people. Typically residential water heater sizes range from 40 to 100 gallon tanks. The rheem professional prestige high efficiency tankless gas water heater 9 5 gpm weighs 82 lb 37 2 kg and has a maximum flow rate of 9 5 gallons per minute.

2 3 fixtures at once you ll need at least 5 gpm. The rheem professional prestige high efficiency tankless gas water heater 9 5 gpm has an overall height of 27 5 69 9 cm width of 18 5 47 cm and depth of 9 75 24 8 cm. 1 or 2 people 23 to 36 gallons 2 to 4 people 36 to 46 gallons 3 to 5 people 46 to 56 gallons 5 or more people over 56 gallons add 10 gallons per additional person. You can estimate the necessary tank capacity in gallons based on the number of people in the house.

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. 1 2 fixtures at once you ll need at least 3 5 gpm. Smith pro size sizing program is a tool that can be used to estimate water heater requirements for many common applications. But if you only need a loose estimate of what size you need versus an exact calculation follow these guidelines.

Climate weather seasonal changes and the. The good news is that just by following a few guidelines you can find the perfect size water heater. 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. Pro size is intended to assist in selecting water heaters or boilers that best meet the specific job requirements.

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. 3 4 fixtures at once you ll need at least 7 gpm. 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. If your plan to use 5 or more fixtures at once you may need multiple tankless units in sequence.

Determine the home s fhr or first hour rating. However every family has different water demand requirements. Consequently these are the two most frequently installed sizes. What size water heater do i need.