How Many Watts Does A Water Filter Use? (Shocking!)

We use water for many things, from doing the laundry, washing the dishes, and even cooking, and we drink it when we are thirsty. To do all those things, we need quick and easy access to healthy and clean water in our place of living.

Cleaning the water from harmful contaminants, we mostly use water filters, which use about 70 watts of energy, to eliminate the unhealthy and harmful elements.

In this article, we will take a closer look at the power use of water filters and whether they are worth the cost.

Below, we are going to find out how many watts a water filter uses to clean your water supply and look at a few other things you need to know and keep in mind when it comes to your water filter. So let’s get right to it!

How Many Watts Does A Water Filter Use?

To find out how much power your water filter consumes, you need to look at the label at the bottom. It might also be located at the back of the devices, where all the technical detail about the device is displayed.

All appliances and devices that use electricity must have the standard information located somewhere on it about the power usage. This is usually a soft metal label with all the electrical information about the devices and is readable.

The most important information you want to look for are the following readings:

  • Watts (W)
  • Voltage (V)
  • Amperage (A)

If the Watts is available, it will be easy, but if only the voltage and amperage are available, you need to calculate. Calculate the wattage of the device with the following formula to determine its power usage:

Watts = Volts (V) x Amps (A)

For instance, if the Voltage(V) is 110 and the Amps(A) is 1, then the Watts is 110 Watts. A standard water filter will use about 70 Watts of power per hour. That means if it runs for 8 hours per day, it will use 70 x 8 = 560 Watts.

We know that one unit of power usage in your home is measured at kilowatt/hour, and one kilowatt is 1000 watts. So 560 watts is just over one-half kilowatt. Now you just need to determine the cost per unit in your area.

The cost per unit times the wattage used is how much that device will cost you per hour while running.

As you can see, a water filter will use anything between 16 and 17 KW/H of power in one month. How much it will cost you per month can be calculated if you know the price of a single unit.

You can easily find the price of a single unit on the electricity bill you receive from your local municipality. Find the power usage of many different appliances and devices here to determine how much it will cost you to use them.

It would be best if you kept in mind that not all water filter models and brands are made the same. They may slightly differ in power consumption. As mentioned, you can find all the details on the label attached at the back or the bottom of your device.

What Is A Water Filter?

A water filter is the simplest device to decontaminate the water supply you get at home. There are different methods used in a water filter to remove the harmful contents from the water, and they are:

Physical Filtration

This method of filtration removes large particles from the water to make it cleaner and healthier for use. This is a filter where the water flows through it and comes out cleaner on the other side, like a filter.

This filter is great for cleaning out sediment and soil that is not harmful to humans, such as mud and dirt. This type of filter is normally used with water that is already clean and does not contain harmful minerals and chemicals.

Chemical Filtration

This method is very similar to physical filtration, where water passes through a barrier to remove particles from the water.

However, this type of filter has a chemical property that helps to remove harmful substances from the water to make it safe to use.

With this filter, you can successfully remove harmful bacteria and other particles from the water. This method uses water with no contaminants such as soil or sediment but contains trace amounts of harmful bacteria.

Biological Process

A biological process is where pressure is used to force the smaller water molecules through a strainer or filter for clean water. The filter has very small holes, which are too small for the larger molecules to go through it.

This way, the contaminants stay on the one side while the clean water is forced to the other side, and is called reverse osmosis. This method can eliminate up to 99 percent of all harmful particles from the water, even dissolved salt.

Water purification filter

Different Types Of Filters

Now that we know the different methods used in water filters to clean the water, let’s look at the types of filters. Many of these types of filters are used with the different water filtering processes to give you pure drinking water in your home.

Boiling The Water

This time-consuming method has been used by humans for ages and is a very simple process that kills most contaminants. But it is not practical to boil the water every time you need to use it, especially if you need it immediately.

Sand Filters

This filter, also called a biological sand filter, contains a few layers of sand through which the water will sift. This is a bed of graded sand on a layer of gravel through which the water filters to give you clean water for home use.

However, this method does not completely remove all bacteria, which must be removed with other methods.

Solar Distillation

This filter uses a water heating process and condensation to filter the contaminants from the clean water. The solar heat causes the water to heat, vaporize, and then rise to the top, where it condensates.

This condensate then runs off in a clean container to give you clean water.

Reverse Osmosis Filter

As mentioned in the previous section, reverse osmosis uses pressure to force the water through a porous membrane.

This causes the contaminants the stay on one side, and the pure water is forced to the other side, separating the harmful particles from the water.

UV Filtration

With this filter, UV rays run through the water, killing off all types of bacteria, viruses, and germs. This method is combined with the reverse osmosis system to provide healthy water in your home.

Charcoal Filters

The highly porous, activated charcoal will bind with the water’s bacteria and other chemical substances. It will not bond with all types of materials, so there might still be some impurities in the water.

This filter is used in many household filtration systems to provide you with reasonably healthy and safe water. The charcoal may also get clogged after some time, so you must regularly replace the activated charcoal filters.

A water pitcher filter is one of the devices that make use of an activated carbon filter.

Fibre Filters

Fibre filter not using electricity watts

These filters are made from materials spun in many layers to provide you with porous mesh. The contaminants stay back when the water filters through this filter while the pure water is filtered through.

This filter will filter all the water’s sediments and other organic matter to give you clean drinking water. The most common fibre filter is cellulose, spun in a cylindrical pipe shape.


Now that you know how many Watts a water filter uses, you can see that it is not that expensive to use. It is worth spending a few bucks on power so you can have clean and healthy water for drinking and other uses.

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