Residential Water Heater Sizes

Smith is proud to be a leading manufacturer of residential water heaters.

Residential water heater sizes. Pro size is intended to assist in selecting water heaters or boilers that best meet the specific job requirements. The tankless water heaters shown here may or may not be suitable for your application depending on other factors such as wiring electrical needs home plumbing configuration water quality and more. Before we get to how to use the calculator to size a tankless water heater let s talk about the factors that go into understanding what size inline water heater you need. Typically residential water heater sizes range from 40 to 100 gallon tanks.

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. Since tankless water heaters don t store water you don t have to worry about capacity size. Simply locate the appropriate water heater sizes on ecomfort using your information. Tankless water heater sizing calculator.

We already covered gpm. Learn what size water heater you need based on your specific needs and priorities. Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. For tankless water heaters the key criterion is hot water flow rate.

Tankless water heater sizing guide for residential applications. Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise. Match the capacity of the hot water source to your exact needs. 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.

Flow rate and temperature rise. Consequently these are the two most frequently installed sizes. The first hour rating is the number of gallons of hot water the heater can supply per hour starting with a tank full of hot water. Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs.

Now you need to understand what temperature rise means. To determine the water heater flow rate needed you ll want to add up the flow rates of all the appliances you plan to use at the same time showers washing machines etc. What size of water heater do you need. Sizing storage and heat pump with tank water heaters.

Smith pro size sizing program is a tool that can be used to estimate water heater requirements for many common applications. For tank water heaters the key criterion is hot water storage capacity.