Water Heater Sizing Calculation

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Water heater sizing calculation.

And your temperature rise which is determined by your incoming water temperature subtracted from your hot water setting. Where are you located. Use our handy calculator to determine your needed flow rate and temperature rise then find models that match your needs. Looking to purchase a new tankless water heater but having trouble figuring out what size or model you need.

Smith pro size sizing program is a tool that can be used to estimate water heater requirements for many common applications. 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. Use our sizing calculator to determine your. Tankless water heater sizing calculator.

Tankless water heater sizing calculator. 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. As an example i will show you what came out for me. What size tankless water heater depends on your gpm at peak hot water demand.

The flow rate through the demand water heater would need to be at least 3 25 gallons 12 3 liters per minute. Flow rate and temperature rise. 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.

If it s not do this quick test. 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. The state statesize 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.