Gas Water Heater Sizes

Smith pro size sizing program is a tool that can be used to estimate water heater requirements for many common applications.

Gas water heater sizes.

You can estimate the necessary tank capacity in gallons based on the number of people in the house. 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. Direct vent furnaces venting. Consider the sliding scale between water heater storage capacity vs.

1 2 people you ll need a water tank with at least a 30 gallon capacity. Sizing storage and heat pump with tank water heaters. Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. So i need to know what size tankless water heater is best for a family of 4.

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. Since i live in boston i should be looking at a gas tankless water heater since they work best in cold climates. Utility water heaters usually range in size from 2 5 to 19 gallons. Simply locate the appropriate water heater sizes on ecomfort using your information.

2 3 people you ll need at least a 40 gallon capacity tank. Water heater recovery rate. 3 4 people you ll need at least a 50 gallon capacity tank electric or a 40 gallon capacity tank natural gas or liquid. Smith signature 40 gallon tall 6 year limited 35500 btu natural gas water heater.

Choosing the right size of water heater also depends on your personal priorities. I wrote a really detailed article reviewing the best gas tankless water heaters for different sized households that you should read by clicking here. Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise. Find the right water heater where to buy rebate finder.

Pro size is intended to assist in selecting water heaters or boilers that best meet the specific job requirements. 1 or 2 people 23 to 36 gallons 2 to 4 people 36 to 46 gallons 3 to 5 people 46 to 56 gallons 5 or more people over 56 gallons add 10 gallons per additional person. This is the balance between how much water your water heater can store and how quickly it can reheat the water in its tank.