Water Heater Size For 5 Person Family

How to size a tankless water heater.

Water heater size for 5 person family.

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. 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. However keep in mind that this is a very loose estimate and it may not be accurate for your household s water usage. We ll also show you how to calculate the exact water heater size that meets your needs and saves you money.

Storage tank hot water heaters are sized based on btu input and capacity in gallons. We ll explain why the numbers above are just loose estimates and how they might not accurately meet your hot water needs. Again the more you rely on hot water on a regular basis the more btus and capacity you ll need. 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.

The first factor in choosing a tankless water heater is calculating the size of your hot water heater. You can estimate the necessary tank capacity in gallons based on the number of people in the house. Sizing storage and heat pump with tank water heaters. The fhr is always on the heater s yellow energyguide label but if you want to double check it yourself use the following formula and a four bedroom house as an example.

Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise. For a tank style heater household size is a simple indicator of hot water needs. Simply locate the appropriate water heater sizes on ecomfort using your information.