What Size Hot Water Heater Do I Need

I ve been boiling water inside a kettle so i ll have some hot water to use in my bathtub when i m bathing but i find that it s time consuming to do that.

What size hot water heater do i need. Now in order to choose an electric breaker multiply the current draw of the water heater with 125 per cent in order to determine the size of the breaker you will need. Water heater s first hour rating fhr the amount of hot water the water heater can produce in a 1 hour period. Tankless units work by using built in coils to heat water when you need it meaning you ll always have hot water on demand. A tankless water heater albeit more expensive upfront will provide you with hot water no matter what.

Add up the hot water demand of all the hot water devices in your home that you assume you d be using in a period of one. Therefore to size a demand water heater you need to determine the flow rate and the temperature rise you ll need for its application whole house or a remote application such as just a bathroom in your home. For a tank style heater household size is a simple indicator of hot water needs. For 1 to 2 people.

Angela waterford january 8 2020 at 4 11 pm. 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. 5 or more people need a 50 80 gallon water heater. 1 2 people need a 30 gallon water heater.

1 or 2. This makes these types of water heaters more efficient than traditional storage tank water heaters which could end up reducing your energy bills. In a us household the current draw for a 1500 watt water heater is 12 5 amps. 2 3 people need a 40 gallon water heater.

3 4 people need a 40 50 gallon water heater. Hot water will be delivered faster when the water heater is closer to the fixture because the length of piping in between the two is shorter. 30 40 gallons for 2 to 3 people. You can estimate the necessary tank capacity in gallons based on the number of people in the house.

Now before you make your final decision there is one other consideration to make and it s a big one. Then add up their flow rates gallons per minute. If you do not have a recirculation pump with the necessary piping system installed the proximity of the water heater to the water fixture will impact how quickly the fixture receives hot water. And they both take normal 5 to 10 minute showers a 40 gallon tank type water heater is all that is needed i will address the use of a tankless water heater in a bit so keep your pants on.

First list the number of hot water devices you expect to use at any one time. If you have one person taking a 10 minute shower with a 2 5gpm showerhead that would be 16 minutes of full hot water. To be certain you have a water heater that s the right size for your home you ll have to do some math.