HomeBLOGAir PurifiersDo Air Purifiers Help With Mold?

Do Air Purifiers Help With Mold?

As the famous saying goes, “love is in the air,” but actually, particles travel through the air around us, and as we breathe, there is an excellent probability of inhaling them. In addition, molds can be microorganisms that we accidentally breathe in, and it is good that air purifiers are there to make the air clean for us.

Whether an air purifier can remove molds depends on the type of air purifier that will be used, and there is an excellent chance of eliminating it through the said device. 

What Is Mold and How Does It Grow?

What Is Mold and How Does It Grow

Molds can be seen everywhere since they thrive in an environment where there is a presence of oxygen and moisture. Belonging to a fungi family, it can grow anywhere indoors or outdoors. If an area is dark, moist, and lacks ventilation, a mold would probably spurt, and they will continue growing as long as the area is humid and has enough nutrition for them. They can also live on painted walls, especially after it gets wet.

Inside our own homes, it also tends to grow in woods, papers, carpets, food, as well as insulation. However, its primary source of growth is water, so moisture is the most significant factor. Other things that contribute to a mold’s development are a food source, oxygen, and temperature, particularly between 40 and 100 degrees Fahrenheit. It feeds through its hyphae filaments, which act as their digestive enzymes, as it spreads through the affected surface.

These molds are found anywhere – indoors, outdoors, and even in the air we breathe. Through its stalks, molds produce microscopic spores that travel through the air. Though they are helpful for the environment since they act as decomposers, unfortunately, some molds contain toxic substances that may pose risks to our health.

Is Mold Dangerous? What Are Mold Health Risks?

Not all molds are dangerous, but some may be harmful to our bodies, specifically in people with suppressed immune systems. It becomes a bridge for opportunistic infections to enter the body as allergens, irritants, and mycotoxins, commonly known as toxic substances or chemicals, may be produced by molds. Thus, inhaling or having contact with its spores may lead to aggravated asthma attacks and allergic reactions, whether the mold is dead or alive.

Since this fungus can be found everywhere, it is common to have an immediate or delayed allergic reaction. Symptoms that might occur to the body once a contact has been made with molds are similar to flu, including runny nose, headache, sneezing, red eyes, and skin rash.

Exposure to molds can irritate the eyes, skin, nose, and throat, whether allergic or not. Breathing mold spores can also lead to lung problems, such as a rare disease called Hypersensitivity Pneumonitis. In addition, there is an inflammation of the airways in the lungs brought by inhaled environmental allergens. However, as reactions to molds closely resemble other diseases, it is best always to consult a health professional first.

How To Test For And Identify Mold

How To Test For And Identify Mold

Since molds are common in houses and we are unsure if they are toxic, it is always better to test them. Not all molds can be seen with the naked eye, and if it is harmful, they should not be cleaned without protection. Before removing them, it will be best to test them first to see what kind of mold we will deal with. A professional can be trusted to handle mold testing, and they may use different tests depending on the organism.

Bulk, Tape, or Swab Tests 

These can be used if the molds are visible. However, these tests can be inconvenient since bulk testing requires cutting a piece of the infected area, while tape and swab tests can potentially ruin the sample under the microscope.

Air Tests

Standard and wall cavity air tests can be utilized to determine potential air contamination. In addition, a portable air pump collects air as samples to be analyzed in laboratories.

Petri Dish Tests

Petri Dish tests are done using an agar solution, which involves letting it stay in the area where molds might grow. The bad side is that it is time-consuming, which takes almost two weeks to be tested.

Different Types of Household Mold

Even if we have no control over the molds that grow outdoors, we should keep them from having their habitat in our homes to avoid health complications later on. Though it is difficult to distinguish them, different types of mold can be commonly seen indoors.


One of them is called acremonium, which can be found in moist areas such as drainpipes, and is said to produce potent toxins that might lead to bone marrow diseases.


Alternaria is green or brown with a velvet texture and is mainly found in bathtubs and shower areas, with symptoms similar to allergic reactions such as watery eyes and sneezing. However, this type of mold spreads quickly and should be removed immediately.


Found in fabrics around the house like carpet, Cladosporium is linked to respiratory infections and allergic reactions.


Another mold type that can trigger lung problems is penicillium, which is airborne and seen in mattresses and wallpapers but is also used for health purposes to create antibiotics.


Lastly, the Stachybotrys, also known as black mold, is the most feared due to its reputation of causing severe health problems. Found in damp areas with increased humidity, black molds are linked to cases of bleeding in the United States.

What Is Mildew? 

What Is Mildew

Mildew is a kind of mold. Typically, these are black, gray, or yellow, making their affected area look speckled with dust. As time passes by, its color darkens. Known for its foul and musty smell, its odor is commonly described as the scent of damp fabrics, which are unpleasant due to its microbial volatile organic compounds that can be seen over time. Mildew is also an umbrella term used for mold growth.

What Is The Difference Between Mold and Mildew?

Its first distinction is color. Molds are commonly blue, brown, gray, white, yellow, or green, while mildew is white, yellow, or gray, then turns brown as it ages. If a mold looks fuzzy or slimy, mildew looks fluffy or powdery. The former can also damage its entire area, while the latter only affects the surface. One reliable method to know whether it is a mold or mildew is to spray bleach on the affected area. If half an hour later, the spots turn white, then it is mildew. If it gets a different color, it is a mold. This can be traced to the insulation and condensation process, which affects mold growth.

Do Air Purifiers Help With Mold?

Air purifiers can trap mold spores to make the air in our homes clean. However, once there is a visible mold problem, it takes more than just an air purifier to eliminate them. It can only work on airborne spores, and in this way, filters the air to stop the moisture and contaminants of the molds from spreading. Though proven effective against mold spores, how it is responsible for removal depends on the type of product used.

What’s The Best Air Purifier For Mold?

Air Purifier uses different filters and other components to make everything that we breathe clean enough for the body. In eliminating molds, there are factors to consider, such as HEPA filters and UV light.

Air Doctor 5000 Air Purifier

AirDoctor 5000 Air Purifier

With its sleek and minimalist design that can fit any style of the house, this air purifier can capture 100% of airborne particles at 0.003 microns in size, capable of filtering mold spores at 10 microns.

Proven effective in laboratories to remove mold spores, it is ideal for making our homes safe. For convenience, it can be moved around the house due to its handle and wheels, and it is also suitable for larger rooms up to 2002 square feet and even high ceilings because of the six fan speeds it offers.

With its medical-grade H13 UltraHEPA-based filtration system, it can remove even the COVID-19 virus to make the air we breathe as clean as possible. Its Whisperjet fans allow maximized capacity at a very quiet system.

However, the machine itself is pricey, and the replacement filters. It also needs regular maintenance to ensure quality.

Read the full AirDoctor 5000 air purifier review.


  • Modern design
  • Large coverage area
  • 6 Fan Speeds
  • Enery Efficient


  • It has many filters that should be replaced regularly = costly

Alen BreatheSmart 75i Air Purifier

AlenBreatheSmart 75i Air Purifier

Alen’s medical-grade True HEPA-fresh filter is said to remove 99.9% of bacteria, airborne viruses, and particles that should be more significant than 0.1 microns. Aside from its capability of eliminating molds, it can also eliminate its odor because of the Heavy Odor Filter installed in this machine.

Allergens are easily trapped throughout the filtration process, as they can clean a room of 1300 square feet. Its LED sensor will also guarantee us that it is working. Running every day and every hour can last up to 12 to 15 months. It is also energy-efficient, quiet, and equipped with low maintenance costs, and its only downside is the higher initial cost needed to be paid for 75i.

Read full Alen Breathesmart 75i air purifier review.


  • A lot of great features
  • Sleek design
  • Energy Efficient
  • Low maintenance costs


  • High price

People Also Ask

What’s Better for a Mold – Air Purifier or Dehumidifier?

Dehumidifiers can remove humidity, which is the source of molds. Air purifiers specialize in making the air clean for us to breathe. Though these two products can go well hand-in-hand to assure stopping the mold permanently from growing, if needed to choose, dehumidifiers are better since they can make the molds dormant.

Are HEPA Filters Effective Against Mold?

HEPA filters are proven effective against airborne spores, in which molds are included. It can eliminate nearly 98% of particles and be classified as safe since it can decrease the chance of getting health problems due to inhalation of mold spores.


Mold growth

Molds are just there, and we cannot do much about it. Useful for the environment as it may be, it can still wreak havoc in our personal lives, especially in our safety. As technology gets more and more advanced, air purifiers are there to solve a common indoor problem, which is mold growth.

Though air purifiers cannot directly kill the molds from their area, at least they can clean the air for us to breathe without worrying if it might pose some risks to our health.

Filtering air can be the least that we can do, and this device, without a doubt, can help us to assure safety amidst the fungi growth that can be beyond our control.

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