How To Pick The Right Size Water Heater Tank


Nobody likes the idea of waking up to a cold shower in the morning. But nobody wants to pay for wasted energy either. That is why it's crucial to do your research so you have the perfect size water heater for your home.

How To Pick The Right Size Water Heater Tank

What are the options for water heater tank capacity sizes?

There are water heater tanks in almost an unlimited amount of different sizes, there are even tankless ones. Some get as small as 2.5 gallons which are known as point of use water heaters. They are used more for things like outposts or garages. There are also very large water heater tanks that are used for hotels and apartment complexes.

Typically, a home water heater ranges from a 30-80 gallon tank.

What size water heater do I need?

Here is a general guideline for picking a water heater capacity: water heater size guide

But as we all know it depends on more variables than how many people are in your home, so here is a more detailed way to find the right size water heater so you don't run out of hot water.

Water heater tank capacity calculator:

To get a more exact measurement of the size water heater you need, you should find out how much hot water you estimate you will be using at the peak time of the day. To do this you should write down every appliance that you would be using and how much water that appliance takes for the use. For example, an average adult takes about 1- gallons of hot water per shower.

Then you should multiply that by how many times you would be doing that task in one hour and add all of the numbers together. This number is the tank size you should get for your home.

Tips so you don't run out of hot water:
  • Spread out shower times between people in the home
  • Wash laundry on cold when possible
  • Clean with a bucket rather than running water constantly
  • Turn off the water while lathering soap in the shower or while washing your hands
How long does it take for a water heater to refill?

For a 50 gallon tank, it takes about an hour for the water heater to refill and heat itself. If you think that your hot water usage will be more spread out (longer than an hour), you can opt for a smaller tank.

What is the lifespan of a hot water heater?

The life span of a hot water heater is about 8-10 years. After this, they will take longer to heat the water.

Preventative Tip:

If you're worried about your hot water heater breaking or needing to be replaced soon, check into getting an appliance repair plan. It's an annual plan that allows you to get unlimited service on your appliances. Check out ours here.