Kiera Jefferson
Keeping the air quality high in your home is important for your health. Major sources of indoor air pollutants include tobacco smoke, gas and wood stoves, pets and pests, mould, furnishings, and construction materials. To reduce indoor air pollution, it is important to identify the source of the pollution and remove it. This can be achieved by prohibiting smoking indoors, reducing other sources of common pollutants, and ensuring adequate ventilation. Additionally, air purifiers, humidifiers, and natural household products can be used to improve indoor air quality.
Strategies to reduce indoor pollution
| Characteristics | Values |
|---|---|
| Cleaner technologies and fuels for cooking, heating and lighting | Solar, electric, biogas, liquefied petroleum gas, and alcohol (e.g. ethanol) |
| Improved housing and ventilation design | Natural ventilation (open windows and doors), mechanical ventilation (HVAC systems), energy-efficient heat recovery ventilators |
| Supportive government policies and economic incentives | Financial support for households to purchase improved energy devices or clean fuels |
| Education and awareness | Understanding household preferences and priorities to stimulate and sustain clean energy-related behaviour changes |
| Mould removal | Fix leaks, clean mould with safe methods and products |
| Air purifiers | High-efficiency particulate air (HEPA) filters and purifiers, Corsi-Rosenthal (CR) boxes |
| Avoid harmful chemicals | Use non-toxic, fragrance-free cleaning products, avoid air fresheners, use safe pest control methods |
| Regular cleaning | Vacuuming or mopping with a HEPA filter vacuum, servicing furnace and air conditioner units annually |
| Avoid outdoor pollutants | Place a floor mat at the front door, avoid opening windows when outdoor air pollution is high |
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What You'll Learn
Use natural ventilation, such as opening windows and doors
Natural ventilation is an effective way to improve indoor air quality. Opening windows and doors can help to reduce indoor pollution by facilitating the exchange of indoor and outdoor air. This process, known as dilution ventilation, involves replacing polluted indoor air with fresh outdoor air, thereby diluting and reducing the concentration of indoor pollutants.
Outdoor air typically contains two to five times fewer pollutants than indoor air. By opening windows and doors, you allow stale indoor air to escape and invite fresh outdoor air to enter your home. This exchange of air helps to remove pollutants, moisture, and odours that may have accumulated indoors.
It is particularly important to ensure adequate natural ventilation during activities that generate high levels of pollutants, such as cooking, painting, or using hobby supplies and chemicals. By opening windows and doors while engaging in these activities, you can prevent the build-up of harmful pollutants and improve the overall air quality inside your home.
In addition to reducing indoor pollution, natural ventilation can also help to control indoor temperatures. Opening windows and doors creates a cross-breeze, allowing hot air to escape and cool air to enter, thereby providing a more comfortable indoor environment, especially in warmer climates.
However, it is important to note that simply opening windows and doors may not be sufficient for optimal indoor air quality. The effectiveness of natural ventilation depends on various factors, including the design of the building, the placement of windows, and the outdoor air quality. In some cases, outdoor air may introduce additional pollutants, such as diesel emissions from nearby freeways or industrial pollution from factories. Therefore, it is crucial to also address the sources of indoor pollution and take steps to prevent them from entering your home.
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Avoid harmful cleaning products and air fresheners
Cleaning products and air fresheners can introduce harmful chemicals into your home, which can be detrimental to your health. To avoid this, it is important to be cautious when selecting cleaning products.
Start by reading the labels on cleaning supplies and household products. Avoid products that contain volatile organic compounds (VOCs), fragrances, irritants, and flammable ingredients. VOCs are hazardous and can cause respiratory system damage, increased cancer risk, and developmental and reproductive harm. These compounds can linger in the air for days, weeks, or even months, contaminating indoor air two to five times more than outdoor air.
Some cleaning products, such as ammonia or chlorine bleach, can be highly toxic. When mixed, they can create dangerous chloramine gas. Avoid using toilet cleaners, oven cleaners, or heavy-duty degreasers that contain hydrochloric acid, phosphoric acid, sodium or potassium hydroxide, or ethanolamines, as these chemicals can cause skin burns, blindness, and lung irritation.
Air fresheners and scented cleaning products can trigger allergies and often contain suspected endocrine disruptors, such as phthalates and synthetic musks. Avoid using air fresheners altogether and opt for fragrance-free cleaning products.
Look for products with full ingredient disclosures and choose those that are certified by reputable organizations, such as Green Seal or Ecologo. These certification programs have rigorous scientific health and environmental standards. If you need a sanitizing or disinfecting product, choose one certified by the Environmental Protection Agency's Design for the Environment program.
When cleaning, ensure proper ventilation by opening windows or turning on fans to circulate fresh air and prevent the buildup of harmful chemicals.
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Clean regularly, using a HEPA filter on your vacuum
Regular cleaning with a vacuum cleaner that has a HEPA filter can help to control the source of allergens and pollutants by removing them from carpets, upholstery, and other surfaces. HEPA, which stands for High-Efficiency Particulate Air, is a type of filter that can trap a large number of very small particles (0.3 microns and larger) that other vacuum cleaners would simply recirculate back into the air in your home. These particles include dust mites, mould spores, pet dander, and pollen.
However, it is important to note that a vacuum with a HEPA filter may not be a comprehensive solution to improving indoor air quality. Some models have air gaps that allow debris to shoot sideways out of the vacuum before reaching the exhaust port, causing a significant amount of dust to be blown out. Therefore, it is recommended to use a vacuum with a HEPA filter in conjunction with an air purifier to provide a more comprehensive approach to maintaining indoor air quality.
Additionally, the act of vacuuming itself, especially with the brush roller spinning, can kick up significant debris and cause an increase in particle pollution in the air. To mitigate this, it is suggested to vacuum with sunlight streaming through a window or to use a strong flashlight to make the dust in the air visible, allowing you to take precautions against inhaling the disturbed dust.
Overall, while a vacuum with a HEPA filter can be beneficial, it should be combined with other strategies such as air purifiers and proper ventilation to effectively reduce indoor pollution and maintain a clean and healthy living environment.
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Use clean cookstoves and fuels, such as liquefied petroleum gas
The use of clean cookstoves and fuels is an essential strategy for reducing indoor air pollution, with liquefied petroleum gas (LPG) being a prominent example of a clean fuel. LPG is a modern fuel that has been used since the late nineteenth century and is relatively clean, even when burned in simple cookstoves. It stands in contrast to solid cookfuels, which are still used by almost 3 billion people worldwide and contribute significantly to household air pollution (HAP). HAP is a major risk factor for health and has been ranked as the single most significant environmental health risk factor globally by the 2013 Global Burden of Disease Study.
LPG is a clean fuel due to its low emission rate, and it is included in the World Health Organization's (WHO) normative guidance for indoor air quality. This guidance outlines specific emission rate targets and fuel recommendations to ensure access to affordable, reliable, sustainable, and modern energy for all. LPG appliances are also known for their performance and durability, making them a reliable choice for reducing indoor air pollution.
In addition to LPG, other clean fuels recommended by the WHO include solar, electricity, biogas, natural gas, and alcohol fuels. These fuels are considered clean for health at the point of use, meaning they do not pose significant health risks when used indoors. It is important to note that the transition to clean cookstoves and fuels may require behavioral changes related to social and cultural practices, such as adopting new cooking methods or fuel sources.
To facilitate the adoption of LPG and other clean fuels, effective policies and economic incentives can play a crucial role. Governments can provide financial support to households to purchase improved energy devices or clean fuels. Additionally, policies can encourage the manufacture and distribution of clean household energy options, increasing their supply and availability.
In summary, the use of clean cookstoves and fuels, such as LPG, is a critical step towards reducing indoor air pollution. By transitioning from solid cookfuels to LPG and other recommended clean fuels, significant health benefits can be achieved, particularly for women and children who are disproportionately affected by the use of polluting fuels and technologies.
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Remove mould and fix leaks to prevent mould growth
Mould is a top contributor to poor indoor air quality. It is a type of fungus that grows in areas with a lot of moisture and warmth, such as bathrooms, kitchens and basements. Mould can rot wood surfaces, cause unpleasant smells and trigger allergies or serious respiratory problems. It often has a musty odour and looks like green, black or white dots.
To prevent mould growth, you must control the dampness in your home. Leaks and water seepage are common causes of mould in households. To address this, you can waterproof your house. Fixing the source of moisture is the only way to prevent mould growth and recurrence. Repair any leaks and install exhaust fans in the bath, kitchen, basement or laundry room.
To remove mould, it is important to wear protective equipment, such as a mask or an N-95 respirator, rubber gloves, and goggles without ventilation holes. For hard surfaces, scrub the mould with detergent and water and let the surface dry completely. For more porous surfaces, use a cloth instead of a brush so you don't damage the surface. To remove mould from wood, you may need to sand the wood before cleaning it with detergent. You can also use a vacuum with a HEPA filter to clean up any sawdust. Always dry any area you clean thoroughly.
To remove mould from hard surfaces in kitchens and bathrooms, you can use undiluted white vinegar. Apply it directly to the mould. You can also use a solution of 10% bleach and 90% water. Spray or brush on the solution, let it sit for 10 minutes, then rinse it off and let it dry. There are also mould removal cleaning products available, as well as natural products.
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Frequently asked questions
There are several ways to improve indoor air quality and reduce indoor pollution. Natural ventilation is one of the most effective ways to improve indoor air quality. Opening windows and doors to let fresh air in can reduce indoor pollutants. Using ventilation systems, such as chimneys or hoods, can also reduce exposure to smoke indoors. However, it is important to be mindful of outdoor sources of pollution, such as smoke or refuse, and only open windows when outdoor air pollution is low.
Using cleaner technologies and fuels for cooking, heating, and lighting can significantly improve indoor air quality. For example, solar, electric, biogas, liquefied petroleum gas, and ethanol are considered clean sources of energy. Additionally, improving housing and ventilation design, such as strategic window placement, insulated walls, and reflective roofs, can reduce the demand for space heating in cool climates.
Yes, there are several other ways to reduce indoor pollution. Firstly, it is important to address any mould in your home, as mould is a top contributor to poor indoor air quality. You should also avoid using cleaning products with harmful chemicals and air fresheners, opting instead for nontoxic, fragrance-free alternatives. Regular cleaning by vacuuming or mopping can also help remove less hazardous pollutants. Furthermore, if you have pets, it is important to manage pet dander, as it can contain allergens that can circulate in the air.
Yes, there are several products available that can help improve indoor air quality. High-efficiency particulate air (HEPA) filters and air purifiers can be used to reduce pollutants in the home. Additionally, Corsi-Rosenthal (CR) boxes are DIY or commercially available air purifiers that are more efficient, affordable, and quiet than standard air purifiers. However, it is important to note that no air cleaner can remove all pollutants from the air, and some may release ozone gas, a known lung irritant.
