Contents

- 1 What size hot water heater do I need for a family of 6?
- 2 What size water heater do I need for a family of 5?
- 3 Is a 40 gallon water heater enough?
- 4 Is a 20 gallon hot water heater big enough?
- 5 How do I size a residential water heater?
- 6 How long can you shower with a 40 gallon water heater?
- 7 What size water tank do I need for a family of 4?
- 8 Is a 50 gallon water heater enough for a family of 4?
- 9 What water tank size do I need?
- 10 How long does it take for a 20 gallon water heater to get hot?
- 11 Is there a big difference between a 40 gallon and 50 gallon water heater?
- 12 How long does it take for a 20 gallon hot water heater to get hot?

## What size hot water heater do I need for a family of 6?

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.

## What size water heater do I need for a family of 5?

3 – 4 people, you’ll need at least a 50-gallon capacity tank (electric) or a 40-gallon capacity tank (natural gas or liquid propane). If your family size is 5 or more, you’ll need an 80-gallon tank (electric) or a 50-gallon tank (natural gas or liquid propane).

## Is a 40 gallon water heater enough?

A very common size, the 40 gallon water heater works well for 2 – 4 people. These tanks are often found in homes that have 1.5 bathrooms. If you are running out of hot water with a 40 gallon tank, it is often possible to upgrade to a 50 gallon tank without much modification.

## Is a 20 gallon hot water heater big enough?

20 – gallon water heaters are a unique size. They’re large enough for smaller homes that don’t require large amounts of hot water, yet they’re an excellent choice for high-demand point-of-use (POU) applications such as bathrooms with showers. The versatility of the 20 – gallon size makes these heaters ideal for many uses.

## How do I size a residential water heater?

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

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

## How long can you shower with a 40 gallon water heater?

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

## 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.

## 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 water tank size do I need?

You should determine the size by multiplying the area of your roof by the average rainfall in your region. This value represents the maximum measurement of water that you can expect to capture. Next, calculate how many days you expect it not to rain, and multiply that figure by your average daily amount of water usage.

## How long does it take for a 20 gallon water heater to get hot?

The average gas heater takes between 30 and 40 minutes to fully heat up the water in its tank. The average electric heater takes about twice as long as the average gas heater to fully heat up the water in its tank, so you can expect it to take between an hour and an hour and 20 minutes to heat up.

## 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.

## How long does it take for a 20 gallon hot water heater to get hot?

It takes a little more than an hour for the electric 20 – gallon hot water tank to completely replenish itself.