Average Residential Water Heater Size

What size water heater do i need.

Average residential water heater size.

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. Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. We ll explain why the numbers above are just loose estimates and how they might not accurately meet your hot water needs. We ll also show you how to calculate the exact water heater size that meets your needs and saves you money.

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. Electric units have measurements in the 10 inch high to 7 inch wide range while gas fired. Sizing storage and heat pump with tank water heaters. If you re going with a storage tank water heater here s a rough guide for storage tank capacity.

You can estimate the necessary tank capacity in gallons based on the number of people in the house. Typically residential water heater sizes range from 40 to 100 gallon tanks. 2 3 people you ll need at least a 40 gallon capacity tank. For a tank style heater household size is a simple indicator of hot water 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. 1 2 people you ll need a water tank with at least a 30 gallon capacity.