Water Heater Sizing Calculation

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Water heater sizing calculation.

The flow rate through the demand water heater would need to be at least 3 25 gallons 12 3 liters per minute. Size a water heater based on number of people in a household if you don t want to bother with any calculations here is an easy reference chart you can use to figure out the right tank capacity for your home. Tankless water heater sizing calculator. What size tankless water heater depends on your gpm at peak hot water demand.

Use our sizing calculator to determine your. Flow rate and temperature rise. To select the right state water heater for your home try our xpert product selector for personalized estimates of the performance and estimated energy cost. As an example i will show you what came out for me.

Calculate your family s first hour water heater rating by multiplying the average water use in gallons per minute for each fixture used during the single busiest hour of water usage in your home. Use our handy calculator to determine your needed flow rate and temperature rise then find models that match your needs. The state statesize sizing program is a tool that can be used to estimate water heater requirements for many common applications. Statesize is intended to assist in selecting water heaters or boilers that best meet the specific job requirements.

As an amazon associate we earn from qualifying purchases. Looking to purchase a new tankless water heater but having trouble figuring out what size or model you need. Pro size is intended to assist in selecting water heaters or boilers that best meet the specific job requirements. And your temperature rise which is determined by your incoming water temperature subtracted from your hot water setting.

Tankless water heater sizing calculator. 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. Where are you located. Its evident from this chart that a family of 5 which is very common in the us requires a 56 80 gallon size water heater.