How much electricity does an air purifier use?

  • By: WPEagle
  • Date: January 20, 2022
  • Time to read: 3 min.

Once you’ve decided to invest in an air purifier for your home, you’ll want to know how much it will cost to run and the energy efficiency. Here we’ll show you how to calculate how many kWh’s an air purifier uses and compare some of the best-rated models on the market.

How much electricity does an air purifier use?

Typically electric air purifiers use between 35 and 150 watts per hour, depending on the model. You can calculate this by taking the wattage of the device (in watts) and multiplying it by the number of hours you’ll be using it for.

Here are some recommended air purifiers that have low energy usage:

MOOKA Air Purifier for Home Large Room up to 430ft2, H13 True HEPA Air Filter Cleaner, Odor Eliminator, Remove Allergies Smoke Dust Pollen Pet Dander, Night Light(Available for California)
Recommended!
Honeywell HPA300 HEPA Air Purifier Extra-Large Room (465 sq. ft), Black
Winix 5300-2 Air Purifier with True HEPA, PlasmaWave and Odor Reducing Carbon Filter,Gray
LEVOIT Air Purifier for Home Allergies Pets Hair in Bedroom, H13 True HEPA Filter, 24db Filtration System Cleaner Odor Eliminators, Ozone Free, Remove 99.97% Dust Smoke Mold Pollen, Core 300, White
Product
MOOKA Air Purifier for Home
Honeywell HPA300
Winix 5300-2
LEVOIT Air Purifier for Home
Energy Usage
8w - 40w
40w - 100w
70w
45w
Noise Level
<35db
<63db
<28db
<24db
Price
$59.97
$199.99
$149.99
$89.97
MOOKA Air Purifier for Home Large Room up to 430ft2, H13 True HEPA Air Filter Cleaner, Odor Eliminator, Remove Allergies Smoke Dust Pollen Pet Dander, Night Light(Available for California)
Product
MOOKA Air Purifier for Home
Energy Usage
8w - 40w
Noise Level
<35db
Price
$59.97
Recommended!
Honeywell HPA300 HEPA Air Purifier Extra-Large Room (465 sq. ft), Black
Product
Honeywell HPA300
Energy Usage
40w - 100w
Noise Level
<63db
Price
$199.99
Winix 5300-2 Air Purifier with True HEPA, PlasmaWave and Odor Reducing Carbon Filter,Gray
Product
Winix 5300-2
Energy Usage
70w
Noise Level
<28db
Price
$149.99
LEVOIT Air Purifier for Home Allergies Pets Hair in Bedroom, H13 True HEPA Filter, 24db Filtration System Cleaner Odor Eliminators, Ozone Free, Remove 99.97% Dust Smoke Mold Pollen, Core 300, White
Product
LEVOIT Air Purifier for Home
Energy Usage
45w
Noise Level
<24db
Price
$89.97

Do air purifiers use a lot of electricity?

Air purifiers use less electricity than your average household appliance. For example, a hair dryer uses 1800 watts/hour, while an air purifier only uses 5-100watts/hour.

So if you plan to use your purifier for six hours, it will use about 30 to 600 kWh’s. If you need an estimate of how much that would cost in your area, you can check out this tool:

Are air purifiers costly to run?

The short answer is yes, but how much it costs to run depends on where you live, your air quality and your energy rates. It also depends on the size of the room and the purifying capacity required for your space. The larger the room or more air that needs to be cleaned, the higher cost per kWh will be.

The other cost consideration when running an air purifier is the filters. These can vary considerably in cost depending on the level of filtration required.

In conclusion, if you want an air purifier for your home it will cost a few cents per hour to run. In general, models using less electricity are the most energy-efficient and will provide cleaner air at a lower operating cost.

Air purifier energy and cost calculator

The power rating of your air purifier. You can usually find it on the box or back of the unit.
Your electricity rate

Should I leave my air purifier on all the time?

You can leave your air purifier on 24/7, but it’s not necessary. If you do decide to leave your machine running in standby mode, make sure it automatically powers off when there is no longer any detectable particulate matter in the air.

It’s better for your energy bill if you program when you want it to come on. Just turn it on 15 minutes before you enter the room, or whatever time works best for your schedule.

Can I run an air purifier all night?

Yes, but its best to us a purifier has a pre-set timer that will automatically power off after a set amount of time.

How many air purifiers do I need?

The right number of air purifiers depends on what you are trying to accomplish. For example, if you have a large area that needs cleaned, then more air purifiers would be required to provide proper coverage. And, if you want to improve the air quality in your entire house, you would need one for each room.

What do the decibel levels mean on an air purifier?

Decibels (dB) measure sound pressures levels. Since sound is created by vibrations that travel through the air, this measurement is used to quantify the intensity of a sound.

Since decibels measure pressure levels, they can be used to describe how much louder something is than another sound. For example, a quiet library might measure 30-35 dB’s while a busy street might be in the 60-65 dB range.

Does the Dyson air purifier use a lot of electricity?

The Dyson range of purifiers uses up to 95 watts per hour, based on the model. This is an average amount for this type of purifier. However if you use a model with a heating function the energy usage can rocket up to 1500 watts!

In Summary

There are many benefits to air purifiers, but they do require electricity. Filters also need regular replacement which can increase operational costs. Be aware of the costs involved before purchasing, and be sure to invest in an efficient model with a proven track record.

Essential Reading

Calculate the Energy Usage of your Air Purifier

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