Water Heater Sizing Calculation

What size tankless water heater depends on your gpm at peak hot water demand.

Water heater sizing calculation. Flow rate and temperature rise. Pro size is intended to assist in selecting water heaters or boilers that best meet the specific job requirements. 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. 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.

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. 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. Tankless water heater sizing calculator. Tankless water heater sizing calculator.

Use our sizing calculator to determine your. The state statesize sizing program is a tool that can be used to estimate water heater requirements for many common applications. And your temperature rise which is determined by your incoming water temperature subtracted from your hot water setting. As an example i will show you what came out for me.

Smith pro size sizing program is a tool that can be used to estimate water heater requirements for many common applications. Where are you located. Statesize is intended to assist in selecting water heaters or boilers that best meet the specific job requirements. The flow rate through the demand water heater would need to be at least 3 25 gallons 12 3 liters per minute.

Rinnai strongly suggests that you only purchase our products from rinnai independent dealers and that you have the products installed only by licensed professionals who have attended a rinnai installation training class licensed professionals who have attended a rinnai installation training class. Looking to purchase a new tankless water heater but having trouble figuring out what size or model you need. As an amazon associate we earn from qualifying purchases. If it s not do this quick test.