How Much Electricity Does An Air Purifier Use? (W/Calculator)

  • Author: Irene Batres
  • Date: February 13, 2023
  • Time to read: 5 min.
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Are you seeking an air purifier to breathe easier and cleaner air in your home?

That’s great! But have you thought about how much electricity an air purifier uses?

It’s an important question, especially if you plan on running it 24/7. Because let’s face it, nobody wants a big old electricity bill to ruin their day!

In this post, we’ll dive deep into the nitty-gritty of air purifier electricity consumption so that you can make an informed decision.

We’ll compare different types of air purifiers and their energy efficiency and give you tips on saving your monthly energy bills.

So, buckle up, and let’s get to it!

How Much Electricity Does An Air Purifier Use

How Much Electricity Does An Air Purifier Consume?

A standard air purifier uses about 50 W on average to operate. Energy Star reports that a standard air purifier turned on all day round consumes approximately 458 kWh per year.

This amount of energy is excessive for just air purifiers because even large refrigerators consume much less yearly energy.

Compared to other appliances, a standard incandescent bulb usually runs at 60 W, and a new LCD television at 91.5 W.

Also Read: Can you leave an air purifier on all night

However, it is recommended to use an energy-efficient air purifier. This will help you to save electricity and cut the cost of having an expensive electricity bill.

How many amps does an air purifier use

How Much Does It Cost to Run an Air Purifier?

When it comes to measuring electricity, The kilowatt (kW) is the standard measurement.

Generally, one kW is equal to 1000 watts. And when electricity is consumed, it is billed per kilowatt-hour (kWh). 

To calculate usage, you need to divide the appliance’s wattage by 1000, then multiply by the number of hours the appliance was used.

For example, If you used a 50-watt air purifier for one hour today. We divide the air purifier’s wattage by 1000 (50 W/1000= 0.05 kW). 


his computation shows that you used .05 kW of electricity to keep the air purifier running for today.

If you keep using the air purifier for an hour a day for a month, you must multiply the kW usage per hour by 30 days.

Using the air purifier for 30 days will amount to 1.5 kW.


he total cost of electricity will depend on how much electricity rates are in your locality or country.

You need to multiply the monthly electrical consumption of the air purifier by the electricity rate in your area.

However, note that electricity rates also depend on the price of generation, government taxes, and other operation costs.

class="wp-block-heading">Air Purifier Electricity Calculator

Below you will find a free air purifier electricity calculator.

If you know your wattage and electricity costs (you can find them on your bill), you have to input it into the calculator.

And it will figure out the cost per day, monthly, and yearly. Give it a try.

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Air Purifier Electricity Consumption On Various Brands

Below is an example of how much it costs to power an air purifier. I took the most popular air purifier brands in the USA.

I also based the table on a U.S. average electricity rate of 13 cents per kilowatt-hour. And calculated the electricity if it was run for 24 hours per day for 30 days per month.

Here is an idea of how much the monthly and yearly costs are per air purifier.

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Air Purifier ModelPower Consumption Rate-WattsMonthly Electricity Cost- US$Annual Electricity Cost – US$
Austin Air Healthmate13512.64153.74
Alen Breathesmart 1059.83119.57
Honeywell HPA300013012.17148.04
Blueair 40312011.23136.67
IQAir HealthPro Plus21520.12 244.84
Medify MA-112958.89108.19
Okaysou AirMax 8L504.6856.94
Levoit Core 300454.2151.25
Winix 5500-290 8.42102.49
Dyson HP04Up To 60056.16683.28
Hathspace HSP00140 3.7445.55
Coway Airmega AP-1512HH151.40    17.08
Xiaomi Mi Air Purifier 3H383.5643.27
Rabbit Air MinusA2 484.4954.66

Factors Affecting Air Purifiers’ Energy Consumption?

The wattage of the air purifier and the amount of time it is used in a day are crucial determinants of total electricity consumption.

Air purifiers generally use up a relatively low amount of power per hour. 

However, if you wish to use this appliance for extended periods, the cost that you will have to pay per month will be considerably higher.


eed, all of us are looking to save some money while still getting continuous clean and fresh indoor air, right?

If you want to reduce energy costs when using an air purifier, there are a couple more tips you can do to reduce the energy price and wattage.

Adjust the Fan Speed:


hough most air purifiers do not consume a lot of electricity.

However, another way to further reduce the energy cost is to set the fan on a low setting. This will help the air cleaning device not to overwork.

Replacing Air Filters:


ty filters can cause the air purifier to work much harder than usual. They result in higher energy costs. So to avoid this, replace the filters when needed. You can do this by looking at the operation of the device.

Use An Energy Star Certified Model:

If you wish to run an air purifier all day without your bills getting too crazy, you must opt to buy Energy Star-certified air purifiers to keep your electrical consumption in check. 

rong>Only Use When Necessary:

Use your air purifier only when necessary, such as when the air quality is poor or someone in your household has allergies. Turning the air purifier off when unnecessary can significantly reduce your energy consumption.

Use A Timer or Scheduling Feature:


y modern air purifiers have a timer or scheduling feature that allows you to set the air purifier to turn on and off at specific times.

This feature can help you reduce energy consumption by only running the air purifier when necessary.

Summary – Do Air Purifiers Use A Lot Of Electricity?

Not all air purifiers are made equal.


e are designed to perform excellently and consume much electricity, while others can also perform greatly without using too much electrical power.

Opting for Energy Star-certified products is best if you wish for more cost-effective choices.

Energy Star-certified products to make the most out of your money.


you assessed that there is not enough ventilation in your home for air to circulate properly, it is highly recommended that you purchase an air purifier.

Clean air is essential for maintaining optimal health, and indoor air pollution will only cause many health problems.

I hope this guide was helpful and answered the question of how much electricity does an air purifier take.


if you have enjoyed this article, check out our blog section.


  1. How Much Does It Cost to Run an Air Purifier 24 Hours a Day?

    Running your air purifier all day and all night will cost you about 86 cents a week, around $3.70 a month, and a whopping $44 bucks a year! These estimates are based on the average cost of electricity in the US, which is around 12 cents per kilowatt hour. And here's the thing, most HEPA air purifiers use up to 50 to 100 watts of juice per hour. So, keep that in mind!

  2. Does Using The Auto Mode Save Energy?

    If you want to save on energy and keep the noise down, using your air purifier's auto mode is a good idea. The fan will spend more time at a lower speed, so it won't use as much electricity. Remember that not all air purifiers are created equal, so this might not always be true.

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    Is It More Energy-Efficient to Leave the Air Purifier on Constantly or Turn It Off When Not in Use?

    If you're looking to save on energy, you might want to keep your air purifier running constantly. Trust me; it won't make much difference to your electricity bill. And the good news is when your air purifier is always on, the air in your home stays clean. But if you turn it off, all that indoor pollution will return.


    Further Resources

    If you’re looking for more air purifier resources, consider checking out our other posts on air purifiers.

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    irene mills author of freshairdevices


    Irene Batres is eager to help others create an indoor allergen-free home. She has years of experience testing out air purifiers, dehumidifiers, and other products designed to help with indoor air quality. Learn more about me.