# Often asked: What Size Water Heater Do I Need Calculator?

## How do I determine what size water heater I need?

You can estimate the necessary tank capacity (in gallons) based on the number of people in the house:

1. 1 or 2 people—23 to 36 gallons.
2. 2 to 4 people—36 to 46 gallons.
3. 3 to 5 people—46 to 56 gallons.
4. 5 or more people—over 56 gallons (add 10 gallons per additional person)

## Is a 50 gallon water heater enough for a family of 4?

The answer to this question will vary depending on the total number of kids you have. For example, a family of 3 to 4 people should purchase a 50 – 60 gallon water heater. On the other hand, a household with 5 – 7 people may require a water heater with a 60 – 80 gallon water tank.

## What size water heater do I need for a 4 bedroom house?

1-2 people need a 30-gallon water heater. 2-3 people need a 40-gallon water heater. 3-4 people need a 40-50 gallon water heater. 5 or more people need a 50-80 gallon water heater.

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## What size water heater do I need for a family of 2?

For 1 to 2 people: 30-40 gallons. For 2 to 3 people: 40-50 gallons. For 3 to 4 people: 50-60 gallons. For 5+ people: 60-80 gallons.

## How long can you shower in a 40 gallon tank?

A 40-gallon water heater can provide up to 2 showers in an hour (if you’re not using any other water appliances).

## How long of a shower can I take with a 50 gallon water heater?

Using the 70% rule, a 50 gallon tank will deliver approximately 35 gallons of water hot enough for a shower. At ~ 2 gallon per minute +,, you get about 17 minutes or less of shower. Check your watch.!

## How long does it take for a 50 gallon water heater to get hot?

A 50-gallon hot water heater with 5,500-watt elements set to 120 degrees takes about 1 hour and 20 minutes to heat water coming in to the unit at 60 degrees. Conversely, when the water entering this same tank is 40 degrees, it takes 1 hours, 47 minutes to heat it up.

## Is 40 gallon water heater enough for a family of 4?

Typically, the rule-of-thumb is that you want a 40 gallon tank for 1 to 4 people, a 50 gallon tank for 4 to 6 people, and a 50 gallon high recovery or 75 gallon tank for 6 to 8 people. Energy consumption for 40 and 50 gallon standard water heaters is quite comparable.

## Is there a big difference between a 40 gallon and 50 gallon water heater?

With the energy factors being equal, the difference in cost of running a 50-gallon heater over a 40-gallon heater is essentially insignificant.

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## What size water tank do I need for a family of 4?

For an average 4-person household, this works out to an average of 452 litres per day. Please note that this only includes a small amount of water for a very small courtyard style garden.

## Can a tankless water heater fill a tub?

Please remember that tankless water heaters also come in different sizes, and you need to get a unit that will deliver a strong flow to the tub. A small tankless water heater can take a long time to fill a large tub. Whatever way you choose, at least now you’ll finally be able to relax in a nice, hot whirlpool tub.

## What is the downside of a tankless water heater?

The primary disadvantage of on demand or instant hot water heaters is the upfront cost. The smaller units that you often see won’t produce enough hot water to serve most households. They’ll only serve one faucet at a time—a problem if you want to shower while the dishwasher is running.

## Is it worth switching to a tankless water heater?

The big advantage of tankless water heaters is that they use less energy since they only heat up water when you need it. You can save hundreds on your energy bill each year. Because they don’t waste power, you can also enjoy the fact that your home will be more sustainable and eco-friendly.