11 Natural Ways to Clean Indoor Air

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Natural Ways to Clean Indoor Air
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Clean indoor air is so important since most of us spend an average of 93% of our time inside (yikes!). Pet dander, carbon dioxide, and volatile organic compounds (VOCs) are just some of the toxins you’ll find floating in indoor air. This is one of the reasons we use an indoor air filter daily and keep houseplants all around the house.

How Bad Is Indoor Air?

Like most things, air quality depends on several factors. Living next to crowded cities, highways, and chemically sprayed farm fields create a higher risk of indoor air pollution. According to EPA scientists, high temperature and humidity levels also increase certain pollutants.

A whopping 30-50% of all buildings are damp enough to encourage mold and bacteria growth according to EPA reports on air quality and asthma. These pathogens then increase the risk of certain health conditions, like asthma and infectious diseases. The EPA’s Guide to Indoor Air Quality also confirms “air within homes and other buildings can be more seriously polluted than the outdoor air in even the largest and most industrialized cities.”

Of course, spending as much time as possible outside in nature is the best option. But when it is necessary to be indoors, it’s important to have clean indoor air! The more air pollution we have, the higher the risk of immediate and chronic long-term health problems.

What Causes Indoor Air Pollution?

It depends on a lot of factors, but the good news is much of the indoor air quality is under our control. Some common sources of air pollution inside include:

  • Dust
  • Outdoor air pollution leaking in
  • VOCs off-gassing from paint, furniture, flooring, etc.
  • Pet dander
  • Conventional cleaners, air fresheners, and other fragrances
  • Gas stoves and other appliances (especially older ones)
  • Dampness and mold growth
  • Carpet, drapes, and other furnishings that collect dust and dirt

Natural Ways to Purify and Clean Indoor Air

Before we jump to cleaning indoor air, we have to address what’s making it dirty in the first place. Dust, mold, and pet dander are just a few of the things that lurk around the house, causing air pollution. Dust mites love damp, human-inhabited areas, like mattresses, furniture, and carpet.

Although they’re microscopic, dust mite waste can lead to health issues like asthma, gut disease, and eczema to name a few.

Step one to purifying indoor air: pull out the vacuum and DIY dusting spray.

1. Vacuum Away Air Pollution

Invest in a good vacuum and use it regularly. Many experts recommend HEPA filters, though it isn’t always necessary. My favorite (and durable) vacuum is this one. Because carpets hide away pollution and allergens (even when vacuumed), minimizing the amount of carpet in the house will help. Just one square yard of carpet can house 100,000 dust mites!

If you do keep carpet and rugs around, deep cleaning them on occasion will further help purify indoor air.

Here’s more on how to keep allergens and pollution to a minimum with regular cleaning:

  • Keep up on dusting and cleaning (taking out trash, wiping down surfaces, etc.)
  • Clean drapes, blinds, and bedding regularly
  • Leave shoes at the door to avoid tracking pollen and muck into the home
  • Go minimalist, there’s less to dust!

All that said, there is such a thing as too clean. Like our gut, our home has a microbiome. Children who are around pets and farm animals actually have less risk of developing asthma. I keep my cleaning routine simple, no fancy cleaners, and use Homebiotic (which is like a probiotic for your house!).

2. Brush Fido

As much as we love our furry friends, pets are another common source of indoor air pollution. Pets should be regularly bathed and groomed, especially if they have access to outdoors. This will help cut down on dander, pet hair, and dirt in the home.

3. Use Natural Air Fresheners

Conventional air fresheners don’t actually freshen the air, they just coat it in toxins. Natural air fresheners work differently. Instead of hiding smells they neutralize them at the source. Obviously if there’s something stinky in the home (like a bag of old trash or musty items), we’ll need to remove it.

Using natural air fresheners and diffusing essential oils can help remove the lingering odors left behind. These also help reduce microbes, bacteria, and dust mites in the air.

4. Beeswax Candles

Candles are cozy and have an inviting smell, but they’re not all created equal. Paraffin and soy wax candles pollute the air, but beeswax does the opposite.

Ready for some cool science??

Pollution in the air has positively charged ions. When we burn beeswax it creates negative ions which then bond to the positively charged ions. The results are cleaner air and a yummy smelling home.

Beeswax candles are often helpful for those with asthma or allergies and effectively remove common allergens like dust and dander from the air. Beeswax candles also burn more slowly than paraffin candles so they last much longer.

I only use beeswax candles in our house. We buy them by the case and our favorites are:

5. Check the HVAC System

While it’s not as fun as essential oils and beeswax candles, good air conditioning and heating systems are a must for cleaner air. For those who live in more polluted areas, an AC system helps to filter incoming air. If you live in an area where outdoor isn’t much of a concern, then opening up the windows and airing out the house is a good idea.

It’s also important to change HVAC filters regularly. You can even add a few drops of a purifying essential oil to disposable filters. Lemon, lime, orange, lemongrass, and clove are some of my favorites to purify indoor air.

6. Avoid Mold and Mycotoxins

According to the EPA, about 30-50% of buildings have damp conditions prime for mold growth. Mold and the mycotoxins it produces can cause a myriad of health problems such as brain fog, fatigue, immune suppression and much more. For cleaner indoor air, remove any sources of moisture and promptly fix leaks.

You can also test humidity levels in the home inexpensively and determine if you should run a dehumidifier. It’s best for humidity levels to be under 50% in the home.

It’s important to remove any porous moldy or musty items from an indoor space (like drywall, wood, or paper). Non-porous items that have been exposed to mold (like metal, glass, and some plastics) can be thoroughly cleaned and dried.

7. Choose Low VOC Furnishings

That picture-perfect HGTV home may have a dirty secret hiding behind that chaise lounge. Certain fabrics and housing materials emit volatile organic compounds (VOCs) that contribute to indoor air pollution. Flooring, paint, drywall, room sprays, and many cleaners are common sources of VOCs.

According to the EPA, VOCs are known to cause a variety of health issues including headaches, dizziness, and cancer.

Choose low VOC building materials and furnishings when buying new. New furniture can also spend a few weeks in the garage to off-gas before bringing it into the home. Opting for natural cleaners and skipping synthetic air fresheners will also reduce VOCs in the home.

8. Cut Down on Cooking Pollution

It’s hard to imagine, but that Sunday pot roast could be adding to indoor air pollution. The World Health Organization sets the indoor limit of exposure to nitrogen dioxide (NO2) at 106 ppb during a one hour time period.

According to a report from the Rocky Mountain Institute, Gas Stoves: Health and Air Quality Impacts and Solutions, cooking in a gas oven emits 130-546 ppb. This far exceeds safety limits. Cooking on a gas range clocks in at 82-300 ppb. Gas stoves can also emit dangerously high levels of carbon monoxide, a gas that can’t be seen or smelled.

For homes with a gas stove, it’s important to have a well maintained and properly adjusted gas stove. Newer stoves put out significantly less carbon monoxide than older versions, according to the EPA.

It’s also important to vent stoves with an exhaust fan. If the stove doesn’t have a fan, an open window with a fan in it to pull cooking fumes outside is another option.

Certain cooking oils, like extra virgin olive oil have a low cooking temperature. When they’re used on the stovetop it can quickly create smoke and fumes in the air. Opt for oils with a higher cooking temperature, like naturally refined coconut oil and high oleic sunflower oil.

9. Get More Plants!

Many of us have heard of the NASA study that looked at plants to clean indoor air. However, it’s a little more complicated than that. The decades-old study was conducted in a sealed, tightly controlled room. A 2014 review in Environmental Science Pollution Res took another look at the original NASA study in light of more recent research.

While the plant’s ability to take up VOCs is well documented in laboratory studies, the effect of plants on indoor air in complex environments like offices requires further investigations to clarify the full capacity of plants in real-life settings.

Some experts claim it would take an impossible number of plants to make a dent in indoor building air. Others point to evidence showing you would only need 15-18 houseplants in a 1,800 square foot space.

Surprisingly, it may not be the plant only that’s cleaning the air.

Research in 2004 found dirt microbes play a big role in purifying indoor air. Micro-organisms in the potting mix rhizosphere do the bulk of the work. In certain plant species, the plant itself also did some of the leg work in air purification.

While the jury may still be out on this one, my vote is for more greenery in the home. I also might have a slight plant addiction. You can read more here about which plants I’ve tested over the years and found to be the best plants for cleaning indoor air.

10. Use Salt Lamps

Salt lamps are another natural way to clean indoor air. These are made from Himalayan salt crystals and just like the beeswax candles, they release negative ions. Although the amount of negative ions may not be enough to clean air that well, salt lamps may help clean the air in other ways.

They’re also a beautiful light source. The only downside…. my kids like to lick them!

We don’t do night lights in our kids’ rooms, but if we did or if we need a light source at night for reading, we use salt lamps. The natural orange glow doesn’t disrupt sleep hormones like fluorescent or blue lights do and I find it very relaxing.

We have an 8-inch salt lamp that we use regularly (it is also the most cost effective for its size, as the bigger lamps can get very pricey).

11. Put Bamboo Charcoal Around the House

Another natural air cleaning option I recently discovered is bamboo charcoal. I’ve talked about some of my unusual uses for charcoal before and we use a charcoal block water filter to remove toxins from our water.

Activated charcoal is a chemical adsorbent, meaning it binds to toxins and chemicals and neutralizes them. Charcoal can have the same toxin-removing effect on the air. We use bamboo charcoal in burlap bags in our house. They work wonders for odor removal and removing toxins from the air.

I’ve found these are also great for removing odors from cars or the bathroom (especially if you have recently potty-trained boys who don’t always have perfect aim!).

We use these Mosu bags in every room of our house.

12. Invest in Air Filters

While there are many inexpensive and easy ways to clean indoor air, an air filter is still a good idea. Houseplants and opening the windows can only go so far to clean indoor air. Our family uses a combination of all of the above, including keeping air filters in the house. Here’s which air filters work best and are my personal favorites.

This article was medically reviewed by Dr. Tim Jackson. He is a Doctor of Physical Therapy and Orthopedic Rehabilitation, and a Functional Medicine provider. He holds a B.S. Degree in Health Science and Chemistry from Wake Forest University. As always, this is not personal medical advice and we recommend that you talk with your doctor.

What ways have you tried to freshen indoor air? Is there anything on this list you’ll add to your routine? Drop us a comment and let us know!

Katie Wells Avatar

About Katie Wells

Katie Wells, CTNC, MCHC, Founder of Wellness Mama and Co-founder of Wellnesse, has a background in research, journalism, and nutrition. As a mom of six, she turned to research and took health into her own hands to find answers to her health problems. WellnessMama.com is the culmination of her thousands of hours of research and all posts are medically reviewed and verified by the Wellness Mama research team. Katie is also the author of the bestselling books The Wellness Mama Cookbook and The Wellness Mama 5-Step Lifestyle Detox.

Comments

121 responses to “11 Natural Ways to Clean Indoor Air”

  1. Hans Gygax Avatar
    Hans Gygax

    Thanks for the article. I have been researching Beeswax candles and the salt lamps for a few hours. I get mixed reviews on the lamps. What do you think of those who say the testing of the lamps show there is not enough negative ions to make a difference?

    The Beeswax idea I like. We have been using those candles (we make our own) for a few years now.

  2. Lois Howell Avatar
    Lois Howell

    I have a himaladen salt lamp for the first time . Never have used one. My husband has copd, has had quadruple bypass heart surgery in 2008 and he sees a Cardiologist, a pulmonary doctor, has had 2 shoulder surgery, his gallbladder removed and takes heart thinners, blood pressure meds, and meds for his cholesterol . I would like to know if it would be good to use this lamp or would it cause him complications.? Also if I used it , where would I place it and do I keep it on always or what? Thank you

  3. Megan Avatar

    Hello there. Does anyone know if the bamboo charcoal would counteract the benefits of an essential oil diffuser? My boyfriend has horrible allergy and asthma problems so I want to get him a natural air purifier but he does use a diffuser quite frequently. Can anyone help me out with any info or experiences regarding this? Thanks so much.

  4. Claire Graham Avatar
    Claire Graham

    My scientist husband refuses to believe that there are any positive benefits to salt lamps. Do you know of any literature that I could show him? Preferably scientific studies!! That would shut him up!!!

  5. Missy Avatar

    Remember that all smoke (including from beeswax candles) is toxic to human lungs. It is not the content of the smoke, but rather the size of the particulate matter. Visible smoke means that although the particulate matter is small enough to be inhaled, it is still large enough to become imbedded in the moist linings of our lungs. All smoke is toxic, with woodsmoke particularly damaging due to the “sharp edged” nature of its particulate matter. Water vapours are much safer.

  6. Delphine De Marco Avatar
    Delphine De Marco

    I have just subscribed to your blog. And I’ve been going over different subjects and I am truly amazed at how awesome your blog is. So glad I found you.

  7. leah Avatar

    Hi!
    I love my salt lamp but I was recently tagged in a post on FB that basically said that any salt lamp with a 2-prong plug is ‘very dangerous’ as 2prong types do not have a trip-wire (safety/earthing wire) in-built; that is the claim anyway. I am very nervous to keep using mine as I have a7 month old who has just started crawling. Would you be able to dispel these rumours for me!!? I would hate to have to use it only as an ornament!
    Thanks 🙂

  8. Rhiannon Avatar
    Rhiannon

    Any ideas as to places to buy salt lamps in the UK that ISN’T Amazon?

  9. Daphne Avatar
    Daphne

    Beeswax candles huh? They sound so funny! Yet do amazing things! Think I’ll give them a shot if I find one of those.

  10. Saleem Al Balushi Avatar
    Saleem Al Balushi

    Hi, every body
    well i see only ladies around (Mama)
    I was searching for the Salt Lamp for my mother in law actually i was having one as a decore pcs early and i through that out because i thought its just a Rock but thanks Katie after reading this I know what is the Salt Lamp. I ordered 4 pics for my Home Sweet Home.

  11. Lina Avatar

    I don’t know if this is the right post to ask this question…we are planning on doing some remodeling (kitchen remodel, painting in living room) and I am newly pregnant. When would it be safer for the baby for us to do this? First, second, third trimester, or after the baby is born? I hate that we have to do this and I realize that no time is ideal.

  12. Evelyn Avatar

    Are these candles safe for someone with MCS (Multiple Chemical Sensitivity)? I read on the Amazon page that they have a scent of honey.

  13. Millie Avatar

    Hi, I love your post. I was wondering, will melting the beeswax in a crockpot have the same effect as burning a candle??

  14. Joelle Avatar

    Hi. I’m looking to buy at salt lamp. What kind do you have? I have looked on Amazon, and have read a zillion reviews, but it seemed a bunch have a problem with lights burning out, faulty wiring, cracked stuff etc. I kind of like the lots of rocks in a basket. Has anyone bought those?

  15. Shelby Avatar

    I absolutely LOVE all of your posts Katie! You have helped empower me to transform our health and our home, for that I am forever grateful. Thank you!

  16. tam Avatar

    hi, love the site. i have a question that has been debatable. we have salt lamps in every room. i heard you should never turn them off. is this bad for children at night. should i unplug them at night

    1. Wellness Mama Avatar

      We do. We keep one on in the hall so they can see if they need to visit the bathroom at night, but they don’t have lamps on in their rooms.

  17. Barbara Kelly Avatar
    Barbara Kelly

    I love these ideas! One caution for people with cats is that they may want to lick the himalayan salt lamps (which could be harmful to them), so people with cats should probably put such lamps where their cats cannot get to them.

  18. Lily Avatar

    I was wondering if flame less beeswax candles have the same purifying properties? I’m not big on using candles, but would use frameless ones if they worked! Thank you!

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