Mi Air Purifier Sensor Not Working—Why And What To Do?

With the rise of health concerns over the past few years, air purifiers have become essential home appliances.

They filter the air in your home so you only breathe in fresh, clean air, providing peace of mind that you're are relatively safer from all sorts of germs and viruses in the air—which is why when our Xiaomi Air Purifier Sensor stops working, we become frustrated. How do we fix this? Let’s discuss.

If the sensor needs to be fixed, it may be because it has been covered with dust and dirt, making the reading inaccurate. Here’s how you can clean the sensor of your Xiaomi Air Purifier:

  • Remove the power source before turning your machine.
  • Turn the unit sideways and locate the back cover. You should find the latch inside the filter compartment.
  • Undo the latch by pushing up a finger on the cover.
  • Clean the sensor using a blowgown to remove the dust particles. Never use hot air. 

Having an air purifier in the house will give you an idea of how many allergens are in your place so you can adjust your cleaning routine accordingly.

They filter out harmful particles that can ruin furniture and lower your home’s air quality, so it’s essential to maintain them properly to ensure these benefits in the long term.

Keep reading below to learn more about how to take care of your Xiaomi Air Purifier.

Air purifier in modern house. Fresh air and healthy life., Mi Air Purifier Sensor Not Working - Why And What To Do?

How To Clean Your Mi Air Purifier

Air freshener, air cleaner device

Regardless of the Model (3H, 2H, 2C, 2S, 3C, etc.), dirt is often the main culprit of sensor malfunction. Since the machine filters out dirt, it is bound to get dirty.

Mi Air Purifiers have a sleek and somewhat polished appearance, so it’s easy to think it might be immune to dust and dirt—but that’s not the case at all.

Here’s how you can clean your Mi Air Purifier in action:


How do air purifiers work?

Air purifier on wooden floor in comfortable home. Fresh air and healthy life.

Air purifiers work either by filtering out the particles in the air or by simply neutralizing without filtering. They sanitize the air, removing toxins and pollutants.

Air purifiers are generally effective, but they won’t be able to remove particles that have already stuck to furniture surfaces.

They can only neutralize and sanitize the particles still freely “floating," but you’ll need a different cleaning method for particles already in beddings or couches.

Benefits of Having an Air Purifier

Air freshener, air cleaner device

Many benefits come with having an air purifier.

They settle our concerns over the air quality, an especially notable problem in a post-COVID world.

Below are some of the most essential benefits of having an air purifier.

Read: Can You Use An Air Purifier And Humidifier Together?

Check out this Air Purifier on Amazon

Removes harmful free radicals in the air

Harmful free radicals such as Radon are a silent killer. Natural radioactive elements produce a colorless radon gas that can seep through hard materials such as rocks and granite, affecting your home.

These harmful radicals can penetrate your house through surface cracks, especially floors and plasterwork. Radon can damage your lungs' inner cell linings, which can cause cancer.

Fortunately, air purifiers can effectively reduce—even eliminate—this risk as they sanitize the air. Because of this, people living in vulnerable areas can have a longer and healthier lifespan.

Of course, make sure to immediately repair any cracks that appear on your house for your security and safety.

Neutralizes bad smells

Smells coming from gasoline or volatile organic compounds can cause breathlessness. Humans aren’t equipped to continue inhaling these kinds of smells.

The HEPA filters in air purifiers can trap the particles causing these unpleasant odors, causing you to breathe better.

They don’t only eliminate odors caused by chemicals; they also get rid of smoke smells.

If a smoker enters your house or someone smokes near your home's entrance, air purifiers can reduce the chances of the smell sticking to your upholstery or furniture.

Aside from this, they also neutralize the smell left by unbathed pets. Pets will inevitably stink even if you bathe them a lot, so having an air purifier around will help reduce the unpleasant odor.

Reduces viruses and germs in the air

With the rise of airborne diseases over the years, an air purifier have become an essential part of the home—and for good reason. HEPA filters effectively trap viruses and bacteria that cause flu, colds, and allergies.

Will air purifiers help protect against COVID-19?

Although air purifiers can safeguard your home against various bacteria and viruses, it is still unclear whether it can trap COVID-19 particles. The CDC still recommends mask-wearing and social distancing to prevent the spread of the virus.

Reduces harmful chemicals

If you live in the city center, where you are constantly exposed to gases and chemicals emitted by cars and trucks, your lungs will be vulnerable to diseases.

Keeping your windows closed is not ideal since you must open them occasionally. Without any form of protection, your lungs can be affected over time.

This is where an air purifier becomes essential. Air purifiers can effectively filter out harmful gas particles and prevent you from contracting diseases.

Extended exposure to these harmful gases can cause cancer as well as dementia and Alzheimer’s disease.

Even if you live in a suburban area where vehicles aren't relatively standard, your house can still be exposed to these chemicals by continuously using cleaning agents that can harm your lungs.

Removes mold-causing bacteria

Molds are microscopic allergens that can be dangerous when not addressed immediately. They make your home smell musty and disgusting, and you wouldn’t want to inhale their spores since they can pose many health risks.

Air purifiers can effectively trap mold spores, but an air purifier would not be enough to eliminate your mold problem.

You would need to apply a more stringent cleaning solution since an air purifier may be unable to keep up with the mold’s growth rate.

Can air purifiers remove dog hair?

Dog Pug Breed and Air purifier in cozy white bed room for filter and cleaning removing dust

Pet hairs usually range between 5 and 10 microns, so HEPA filters, which can filter particles as small as 0.3 microns, can remove the smallest pet hairs undetected by other cleaning materials.

This is essential, especially if you or someone in your house may be allergic to pet hair.

However, air purifiers will not completely solve the problem. Pet hair stuck into your carpet or trapped in your bedding will need a different solution.

Read: Does A Dyson Air Purifier Remove Pet Hair?

Can air purifiers filter outside air?

Air Purifier In Living Room For Fresh Air, Healthy Life And Removing Dust

Air purifiers can filter out the dust and dirt outside your house. However, you must incorporate other solutions to prevent these dirt and dust from becoming trapped in your home.

For instance, you can implement better ventilation systems around your home. This will make your air purifier perform better and have better indoor air quality and indoor climate.

Are air purifiers expensive?

Because of their effectiveness, air purifiers can be costly. This is because they have a high-end HEPA filter, and most are highly energy-efficient.

Aside from that, they also have a competitive clean air delivery rate. This means that air purifiers can clean 100 cubic feet of air per minute and remove 80% of harmful particles.

How much do air purifiers cost?

Air purifiers cost anywhere between $200-$900. You also have to factor in cleaning costs and energy costs. Mid-range air purifiers can cost you between $3-8 per month, depending on your hourly usage.

Is an air purifier worth it?

Air purifiers, white and sometimes pricy, are an investment in your health.

Air purifiers are worth every penny, especially if you live with children or elders vulnerable to various health concerns. It’s more expensive to cure sickness than it is to prevent it.

Final Thoughts

Air purifiers have become an integral part of your indoor system. They have a lot of benefits, so we must know how to clean them effectively so they won’t break down quickly.

Cleaning them regularly can lengthen their lifespan, saving you money in the long run and giving you peace of mind, knowing you’ll be safe from airborne diseases.

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