**Rated by their gallon-capacity, water heaters most typically come in the following sizes:**

- 40-gallon water heater.
- 50-gallon water heater.
- 66-gallon water heater.
- 75-gallon water heater.
- 80-gallon water heater.
- 120-gallon water heater.

## Considering this, how do you size a water tank?

**Capacity Calculation Formula**

- Total Water Requirement = Number of persons X Minimum Water requirement = 10 X 135 Litres = 1350 Litres.
- We know, 1 m3 = 1000 litres of water.
- So the required storage volume for 1350 Litres = 1.35 Cubic Metre.
- Now we have calculated the volume of water requirement.

**2 showers in an hour**(if you’re not using any other water appliances).

## Correspondingly, how many showers can you put in a 50 gallon water heater?

On a national average of 8 minutes to take a shower you can can get **2 showers** out of a 50 gallon water heater. Based on 17 minutes of hot water run time at 2.1 gallons per minute shower head flow calculation also from a 50 gallon water heater.

## Is a 10 gallon water heater enough for a shower?

Determining how much hot water your water heater should provide per shower depends largely on the size of your hot water tank. For instance, **a typical shower uses about 10 gallons of hot water**. So, if you have a 40-gallon hot water tank, you should be able to get four average-length showers out of your hot water tank.

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

**For a four-person family, a 50-gallon water heater is sufficient**. 50-gallons is good if you’re using electricity, and 40 gallons will work for natural gas or propane. Families with more than five persons may benefit from an 80-gallon electric water heater or 50-gallon gas water heater.

## Is a 50 gallon water heater enough for a family of 7?

Water Heater Sizes

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.

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

**50-gallon water heaters have a longer lifespan**. In general, 40-gallon heaters last for about eight years, while 50-gallon heaters can last 12 years. This is because 50-gallon heaters have thicker tanks.

## Should I get a 40 or 50 gallon water heater?

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.

## What brand of water heater is the most reliable?

**15 Best & Most Reliable Water Heater Brands in the World**

- A.O. Smith. …
- Rheem. Rheem was founded in 1925 by two brothers, Donald and Richard Rheem – and with financial backing from a third brother, William. …
- Kenmore. …
- Bradford White. …
- American Standard. …
- American Water Heaters. …
- Bosch. …
- EcoSmart.

## What size hot water tank do you 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)**.

## 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.