Hot Water Heater Sizes

The good news is that just by following a few guidelines you can find the perfect size water heater.

Hot water heater sizes. 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. 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. Climate weather seasonal changes and the. 3 4 fixtures at once you ll need at least 7 gpm.

1 2 fixtures at once you ll need at least 3 5 gpm. 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 1 to 2 people. Sizing storage and heat pump with tank water heaters.

You can estimate the necessary tank capacity in gallons based on the number of people in the house. 2 3 fixtures at once you ll need at least 5 gpm. 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. Consequently these are the two most frequently installed sizes.

What size water heater do i need. 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. 30 40 gallons for 2 to 3 people. Smith pro size sizing program is a tool that can be used to estimate water heater requirements for many common applications.

Pro size is intended to assist in selecting water heaters or boilers that best meet the specific job requirements. However every family has different water demand requirements. Typically residential water heater sizes range from 40 to 100 gallon tanks. If your plan to use 5 or more fixtures at once you may need multiple tankless units in sequence.

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. But if you only need a loose estimate of what size you need versus an exact calculation follow these guidelines. Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs. That s the measure of how much hot water the heater will deliver during a busy hour such as first thing in the morning.