Do air purifiers make your electric bill go up?

Author: Prof. Zoie Dooley  |  Last update: Thursday, September 4, 2025

On average, air purifiers use between 30 to 100 watts of power—similar to what your laptop or ceiling fan uses—which can increase with larger units or those operating at higher settings. Models with higher energy ratings generally consume more electricity to deliver faster or more thorough air cleaning.

Will an air purifier run up my electric bill?

An air purifier running 24/7 would use around 15-20 kWh per month, or around 0.5 kWh per day. It's not going to be a significant contributor to your usage.

Is it expensive to run an air purifier 24 7?

When running 24/7, most HEPA air purifiers rated 50 to 100 watts per hour would only set you back around $4 to $10 monthly or $72 to $120 in a year.

Are air purifiers expensive on electricity?

Standard room air purifiers, when operated continuously, can use up to 550 kWh of electricity each year. The total cost to run an air purifier depends not only on which model you choose, but also on how you operate it.

Is there a downside to air purifiers?

What are the downsides of air purifiers? There aren't a lot of downsides to having an air purifier in your home aside from the financial investment. Many ionizers, especially older models, can generate ozone when they are operating, which is known to exacerbate asthma.

Air Purifiers: Do They Actually Work?

What is the dark side of air purifiers?

Ozone-Generating Air Cleaners

One mechanism of damage results from ozone-olefin reactions, and another from ozone reacting with electron donors (such as glutathione). Inhalation of relatively small amounts of ozone can cause coughing, chest pain, throat irritation, and shortness of breath.

Is it bad to have an air purifier on all the time?

As you can see, the drawbacks of leaving your air purifier on all the time are minimal. It's perfectly safe to keep the device running continuously, and the amount of energy it consumes is very small.

Can I leave my air purifier running 24-7?

Yes, we recommend running your air purifier 24/7, depending on the season, or your needs.

What uses the most electricity in a home?

Heating and cooling: 45-50%

The largest electricity consumer in the average household is your heating and cooling appliance. By a long shot. Central air conditioners and heaters use tons of energy in order to keep your home set to the right temperature.

How much does it cost to run an air purifier per month?

Finally, to calculate the cost, multiply the daily kWh by the cost of electricity per kWh, which you can find on your local utility bill. If electricity costs $0.12 per kWh, running your air purifier for 10 hours a day would cost you 0.6 kWh * $0.12 = $0.072 per day, or approximately $2.16 per month. Wow, that's cheap!

Where is the best place to put an air purifier?

Keep your device away from moisture or areas with high humidity. Place your device at least 6 inches from walls, furniture, or other items while in use. Place your air purifier near the most likely source of indoor air pollution. Consider investing in an air purifier that shuts off automatically with a timer.

Does an air purifier help with mold?

Mold is an obvious health risk in any home, but investing in an air purifier can help limit your exposure. The best among them will ideally offer HEPA-level filtration, with this level of filtration being able to trap up to 99.97% of airborne particles down to 0.3 microns in diameter.

Are air purifiers expensive to run?

As a rule of thumb, Air Purifiers are reasonably cheap to run. Their power consumption generally depends on the size and power of the unit. Smaller, cheaper units such as the Levoit Core 300 uses 33 watts. This would equate to 27p a day and is considered on the cheaper end as far as appliances are concerned.

Does air filter affect electric bill?

Over time, these filters accumulate dirt and debris, leading to obstructed airflow. When the airflow is hindered, your HVAC system must exert more effort, consuming more energy than usual to maintain your home's comfort levels, leading to increased utility bills.

Do air purifiers remove dust?

Air purifiers assist in eliminating household dust by helping to clean and purify the air in the home. Dyson's advanced purification machines are engineered with technology that traps dust before it settles on your furniture and floors. Dyson purifiers capture 99.95% of dust and ultrafine particles1.

How much electricity does a TV use?

How much electricity does a TV use? Generally, TVs use between 50 to 200 watts (W) of electricity, depending on the model. Most TVs use less than one amp and connect to a 120-volt outlet. Older TVs that use technology such as Plasma and CRT are much less efficient compared to newer LED and LCD TVs.

What runs your electric bill up the most?

What costs the most on your electric bill? Heating and cooling are by far the greatest energy users in the home, making up around 40% of your electric bill. Other big users are washers, dryers, ovens, and stoves. Electronic devices like laptops and TVs are usually pretty cheap to run, but of course, it can all add up.

Do air purifiers use a lot of electricity?

Room air cleaners are portable, electric appliances that remove fine particles, such as dust and pollen, from indoor air. A standard room air cleaner, operating continuously, uses approximately 450 kWh per year in electricity. This is more than the energy used by some new refrigerators!

How to reduce electricity bill?

Our top 10 energy saving tips
  1. Switch off lights and electrical appliances when not using them. ...
  2. Switch to energy-saving LED light globes. ...
  3. Shut doors and close curtains. ...
  4. Save energy in how you wash and dry clothes. ...
  5. Understand and improve your home's energy use. ...
  6. Save energy in the kitchen. ...
  7. Manage your heating and cooling.

Does an air purifier help with smell?

An air purifier and specific filters effectively eliminate harmful gases and unwanted odors from your indoor environment. A standard particle filter is not designed to remove gases and odors. For gas and odor removal, the air purifier should be equipped with a filter that includes activated carbon.

When to turn off air purifier?

This is why most manufacturers will recommend you to leave your air purifier running all day, especially if it comes equipped with an automatic setting. This setting allows your device to monitor the quality of your air in your home for you and to adjust its speed depending on the levels of pollutants that it detects.

Should you run Dyson air purifier 24/7?

Dyson purifiers are optimal when left switched on in auto-mode. This allows the purifier to constantly monitor your air quality, and automatically sense and capture pollutants.

What are the side effects of an air purifier?

Headaches, sore throat, coughing, Asthma attacks, and difficulty breathing are a few of the symptoms that can be brought on by some air purifiers. Yes, that's right. Your air purifier may actually aggravate many of the health issues you hoped it would solve.

Should an air purifier be on the floor or table?

Specialists recommend placing the device on the floor, because it is near the ground that there is a higher concentration of pollutants. Setting it on a shelf can significantly reduce the filtration efficiency. An important issue is also where not to place the air purifier.

Is it bad to sleep next to an air purifier?

Overall, removing contaminants from the air will not have a negative impact on sleep. Here at Molekule we recommend keeping your purifier on at all times so it cleans the air as much as possible. If the white noise is too loud all our units have variable speeds to balance efficiency and sound.

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