Standard Hot Water Heater Size

Using a tape measure measure the height of your water heater from its base to the top.

Standard hot water heater size.

Tankless units work by using built in coils to heat water when you need it meaning you ll always have hot water on demand. 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. Pro size is intended to assist in selecting water heaters or boilers that best meet the specific job requirements. Because a continuous flow system supplies hot water on demand and the hot water is endless the most important thing to consider for these water heaters is flow rate.

Then measure the width. The amount of water you use will be the same regardless of your water heater size. Determine the home s fhr or first hour rating. Well to get an accurate answer you d have to calculate out how much hot water you typically use during your busiest hot water using hour.

Sizing storage and heat pump with tank water heaters. This makes these types of water heaters more efficient than traditional storage tank water heaters which could end up reducing your energy bills. As an example an instant hot water heater size for family of 5 would be a 21 litres per minute flow rate vs a hot water tank size for family of 5 would be 230 300l 60 80 gallons. 30 40 gallons for 2 to 3 people.

This is assuming 3 showers running simultaneously with 3 star water saving shower head. 1 or 2. A tankless water heater albeit more expensive upfront will provide you with hot water no matter what. For 1 to 2 people.

You can estimate the necessary tank capacity in gallons based on the number of people in the house. Determine the size of your water heater. If you use hot water intensely for short periods of time like taking showers or baths while doing laundry a low capacity water heater might not do the job. Look for a sticker on the side of your water heater.

It should have the serial number and other information as well as the gallon capacity listed. But if you only need a loose estimate of what size you need versus an exact calculation follow these guidelines. For a tank style heater household size is a simple indicator of hot water needs. The good news is that just by following a few guidelines you can find the perfect size water heater.

Smith pro size sizing program is a tool that can be used to estimate water heater requirements for many common applications. 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. Don t opt for a smaller unit thinking that it ll shrink your energy bill.