can air purifiers catch fire

Can Air Purifiers Catch Fire? Reasons, Dangers, and Precautions

For air purifiers users it’s the talk of the town can air purifiers catch fire? Air purifiers are a way to keep the air in your home, school, or office clean and healthy. They have all sorts of benefits, from reducing allergies to removing smells and even improving sleep quality by giving off healthier air for better breathing at night. However, some people are concerned about whether or not air purifiers can catch fire, which is why we put together this guide on why air purifiers catch fire and how you can avoid it so you can breathe easier knowing that your home will be healthier while also being safer!

Can air purifiers catch fire?

In a nutshell, the answer is yes. First of all, it’s important to note that any electronic or mechanical device is capable of failing. There are many reasons why an air purifier might catch fire or be a safety risk. While some fires occur due to faulty manufacturing or poor quality control, others are caused by user error. Regardless of what causes your air purifier to malfunction, you can take steps to avoid fires in your home. To determine if your air purifier poses a danger, you need to understand how they work and what risks they pose.

Reasons for Can air purifiers catch fire

Here you can see some reasons for air purifiers catch fire.

can air purifiers catch fire

Air Purifiers Cause Fires due to faulty manufacturing.

Electronic air purifiers are known to cause fires due to faulty manufacturing; as such, you must look for high-quality filters if you want an air purifier for indoor use. If your device has a defect in its design or quality, it could lead to damaging results in your home or office.

There have been several stories where an air purifier caught fire because of improper wiring – not all air purifiers are created equal! A study conducted by firefighters suggests that even relatively small appliances can cause electrical fires under certain conditions: Firefighters are called on more than 3,000 home structure fires each year involving space heaters.

Air Purifiers Cause Fires due to dirty air filters.

Like most people who use air purifiers in their homes, you may be very aware of how dirty your filter is. But did you know that some filters can become so filled with dirt and debris that they’re a fire hazard? If not cleaned regularly or replaced entirely (depending on your machine), these filters can ignite in your bedroom or office. Before long, flames could travel through your ducts and spread to other parts of your home—before you notice anything wrong.

Air Purifiers Cause Fires due to overheating.

Electric components heat during use and require more energy to cool down. This can cause an appliance to overheat if enough outlets are used or if more energy is being used than what is originally required by that appliance. If your air purifier starts to smoke or smell like burning plastic, then unplug it immediately and contact your local fire department. In comparison, rare a faulty air purifier caused fires that have resulted in hospitalization due to carbon monoxide poisoning.

Causes of A Fire Due To An Air Cleaner malfunctioning

Using an air cleaner improperly can be dangerous. The main causes of fire due to air cleaners are overfilling it with dust particles or other flammable materials such as paper, plastic, or wood. That’s why you should use your air cleaner at least two feet away from papers or other combustible items. Also, try not to leave your vacuum cleaner for a long time in one spot; if it stays there for hours, it might cause dust buildup.

How To Avoid The Risk Of A Fire From Your Air Purifier

can air purifiers catch fire

One of my friends lost a big chunk of her house due to an incident involving her air purifier. Luckily no one was hurt, and they could get out safely. An air purifier is a great investment if you have allergies or asthma; however, there’s always some risk involved with most things. That’s why I want to share these tips to keep you safe in case your air purifier ever catches fire.

Unplug it from its power source

Unplugging it from its power source is crucial to avoid a potential fire hazard. An air purifier may still ignite even when it’s not plugged in. And don’t assume that an automatic shutoff feature protects you firefighters have reported some air purifiers catching fire even after being unplugged. Don’t take chances; ensure your cleaner is unplugged at all times.

Turn off any fans that are near it 

To avoid fan fires in air purifiers, make sure that you turn off any fans that are near your air purifier. This is important if you have a forced-air heating system for your home or business. If there’s a risk of overheating due to too much airflow in an area, your air conditioner may try to increase its airflow by activating its fans more frequently; because of other precautions (below), though, it can still cause trouble for your cleaner.

Open up windows and doors so smoke can escape 

As much as possible, air out your home by opening windows and doors so smoke can escape. This is especially important for smokers or those with sensitive respiratory systems. If you don’t have a balcony or patio, you may want to open a window in each room on opposite sides of the house. Make sure to open them away from any trees or other flammable plants. Most importantly, do not use an air purifier when doors and windows are closed!

Try putting out any flames

You may find yourself with limited options in an emergency like an explosion or fire. Being prepared for any scenario that can endanger your life is vital. This means having a plan of action, so you know exactly what to do if something serious happens around you. A good first step is learning to put out fire not all fires are created equal. If your air purifier catches fire, here’s how to deal with it

Alerting your local fire department.

You can call your local fire department if you think your cleaner might be a fire hazard. They should know what they’re doing (or at least be able to point you in the right direction). If there’s smoke coming out of it or its wires, have burned through or anything like that, shut it off immediately. And if you already have a history of fires in your house (with no obvious explanation), think twice about leaving an air purifier on overnight.

You can also check out our other related article Can I use an air purifier with a ceiling fan?

How Does Smoke In The Home Affect One’s Health And Wellbeing

When wildfire smoke enters a home or apartment, it directly impacts our health. Smoke particles are small enough to float in air currents throughout your home. The wildfire smoke particles that enter your home will be absorbed into any clothing, furniture, or carpeting in your home that has come into contact with outside air. The indoor air quality of many homes is so compromised by airborne particulate matter from wildfires that residents should evacuate their homes immediately if advised to do so by emergency services.

Direct dangers of purifiers

it could start a fire if you don’t clean it often enough. Some HEPA filters tend to fill up with small dust particles over time. Cleaning your purifier can reduce such dangers. Be sure to follow manufacturer instructions regarding how often you should clean it. For example, some manufacturers suggest cleaning HEPA filters every month or two months. It is also important to change them at least once a year. Not doing so may cause fires due to the buildup of dust in air filters.

Indirect dangers of purifiers

It might be much easier to understand how an air purifier can catch fire if you learn about some of its other dangers. One of these indirect dangers involves electricity. Without proper grounding, a unit could spark and electrocute anyone nearby when plugged in. On top of that, faulty wiring can also result in a fire. Hepa filters work for wildfire smoke: A HEPA filter can trap smoke particles down to 0.3 microns; however, it doesn’t affect wildfire smoke.

Do HEPA filters work for wildfire smoke?

HEPA stands for High-Efficiency Particulate Arrestance. This means it removes 99.97% of all particles from 0.3 to 0.12 microns in size! This makes it incredibly effective at removing smoke particles, pollen, and other fine particulates that may trigger allergic reactions or asthma attacks. A quality air purifier will remove around 90% of these smoke particles from your home or workplace!

can air purifiers catch fire

What are Ionizers 

These are air purifier models that release charged particles into a room. Some people prefer ionizers because they attract dust particles like a magnet. But experts caution that ionizers might also cause fires. So if you have one of these machines, don’t leave it unattended. And keep flammable items away from your ionizer—especially fabric (blankets, pillows, etc.). That’s why many manufacturers include warning labels about fire hazards with their products.

Safety guidelines:

  • Get an air purifier with a UL rating; look for either label on your device. 
  • Read all instructions before using any product.
  • Place your air purifier on a non-flammable surface away from anything flammable or combustible. 
  • Do not use an extension cord with your appliance.
  • Make sure your air purifier is turned off when cleaning it. 
  • Clean lint out of filters regularly. If you see sparks or smoke coming from your machine, turn it off immediately and unplug it. 
  • Then call customer service for help troubleshooting. Remember that when looking at fire hazards related to indoor air quality, there’s more than one factor at play.


Get the answer to your questions.

Can you leave an air purifier at the night?

The short answer is yes. However, you should avoid leaving an air purifier on all night unless there’s a specific reason. In most cases, your air purifier will be sitting idle while you sleep.

Can I leave my air purifier on 24 7?

If you have a small cleaner, you can leave it on 24/7 without any worries. However, if your unit is larger or more powerful, you should only run it when there’s smoke in your home. This way, you won’t waste energy while your family is sleeping or away from home.

Can an air purifier explode?

That depends on several factors. Some air purifiers are made for smoke particles, others for pollen, and others to remove odors. If you have an air purifier that’s not meant to deal with fires or smoke particles (e.g., one made to remove allergens), ensure it’s far away from a heat source like a fireplace.

Should I leave my air purifier on when I’m not home?

We all enjoy fresh air inside our homes – especially during cold or flu season. Using an air purifier is one of the best ways to improve indoor air quality (IAQ).

Where is the best place to put my air purifier?

It’s important to have your air purifier placed in a space with adequate ventilation. If you live in a small room, place it in an open area of your house for optimal results.


There are many reasons why an air purifier can catch fire. While manufacturers do their best to create a safe product, there is always some risk associated with operating electrical devices close to oxygen. It’s important to stay diligent and follow all precautions to avoid fire due to air purifier use. The most dangerous air purifiers typically have high-voltage motors (especially in HEPA models). Still, even low voltage motors pose a serious fire risk if they malfunction or break. Basic safety measures such as using extra caution when cleaning can ensure you don’t set your home on fire while caring for indoor pollutants.

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