Maintenance Tips For Indoor Air Quality Systems

Written by: Aaron Patterson
November 13, 2023
Maintenance Tips For Indoor Air Quality Systems

Excellent indoor air quality is vital for health, reducing allergies, asthma, and illness risks. This guide provides essential maintenance tips for indoor air quality systems, outlining strategies for facility managers and homeowners to enhance IAQ, mitigate pollutants, and ensure a healthier environment.

Key Takeaways

  • Open windows to enhance air circulation and dispel indoor pollutants.

  • Tackle pollution sources directly, from mold to chemical emissions.

  • Maintain HVAC systems, focusing on filter cleanliness for dust and allergen control.

  • Use exhaust fans for better ventilation in high-moisture areas.

  • Opt for natural cleaners and maintain low humidity to prevent mold and ensure air purity.

Understanding the Impact of Air Pollution on Indoor Spaces

Indoor air pollution is a critical factor that can degrade household air quality and is often underestimated in its impact on our well-being. Common entry points for outdoor pollutants into our living spaces include windows, doors, and structural imperfections, which can contribute to poor IAQ (Indoor Air Quality)[1]. These pollutants can exacerbate respiratory conditions, leading to a decline in good indoor air quality and an increase in IAQ problems.

Household chemicals, pervasive allergens such as dust mites and pet dander, and combustion pollutants from sources like stoves and heaters are primary offenders in compromising indoor air quality. These elements can lead to various health issues, from minor allergies to serious conditions like asthma, underscoring the importance of maintaining good indoor air quality.

“Indoor air can be up to 5 times more polluted than outdoor air, according to the EPA.”

Regularly Ventilate Your Space

To improve air quality in your indoor space, ventilate it regularly[4]. This can be done by opening windows or using exhaust fans. Natural ventilation helps to circulate fresh air and remove stale air, reducing the concentration of pollutants.

Use High-Quality Air Purifiers or Filters

Investing in high-quality air purifiers or filters is another effective way to enhance indoor air quality. These devices work by capturing and removing contaminants such as dust, pollen, pet dander, and mold spores from the air. Look for filters with a high Minimum Efficiency Reporting Value (MERV) rating for optimal performance.

Minimize the Use of Chemical-Based Cleaning Products

To safeguard indoor air quality and address common IAQ problems, it's advisable to minimize the use of chemical-based cleaning products. These can emit harmful volatile organic compounds (VOCs), deteriorating the quality of your indoor environment. Opt for natural alternatives like vinegar, baking soda, and lemon juice, effectively maintaining indoor air quality by cleaning without releasing harmful substances.

Control Humidity Levels

Proper humidity control is a cornerstone of maintaining good indoor air quality[2]. Excessive moisture can lead to mold and mildew, contributing to poor IAQ and potential health issues. Utilize dehumidifiers in damp areas of your home, such as basements and bathrooms, to manage humidity levels and enhance overall household air quality. Addressing leaks and water damage promptly can also prevent the deterioration of indoor air quality.

Keep Your Space Clean and Dust-Free

Consistent cleaning is pivotal for preserving good household air quality and preventing IAQ problems. Regularly vacuuming with HEPA filters can significantly reduce the presence of dust mites, a notorious indoor allergen, thus contributing to the overall quality of your indoor air. By keeping your living space clean and dust-free, you're taking proactive steps to ensure good indoor air quality and mitigate the risks associated with poor IAQ.

Avoid Smoking Indoors

Cigarette smoke contains numerous harmful chemicals that can severely impact indoor air quality. Avoid smoking indoors altogether as it not only affects your health but also lingers in the air and on surfaces, posing a risk to others. Designate outdoor smoking areas to minimize the negative effects of secondhand smoke.

Maintain Regular HVAC System Maintenance

Your HVAC system is crucial in maintaining air quality inside your house. Regularly schedule professional maintenance for your heating, ventilation, and air conditioning systems.

Controlling Humidity Levels for Healthier Indoor Air

Balancing indoor humidity is key to maintaining healthy air quality. Learn how managing moisture levels can thwart allergens and enhance your living space for optimal comfort and health.

Maintain Optimal Humidity Levels

To ensure healthier indoor air, it's crucial to maintain optimal humidity levels. Aim for around 40% to 60% humidity in your home. This range helps prevent the growth of mold and mildew, which can thrive in environments that are too damp or humid.

Use Dehumidifiers in Damp Areas

In areas like basements or bathrooms where moisture tends to accumulate, consider using dehumidifiers. These devices help remove excess moisture from the air, reducing the risk of mold growth and musty odors. Place them strategically in these damp areas to effectively control humidity levels.

“A single houseplant can purify up to 100 square feet of indoor air, with certain species like the Snake Plant being particularly effective.”

Ensure Proper Ventilation

Proper ventilation is key to preventing excessive moisture buildup in your home. Ensure areas prone to moisture, such as kitchens and bathrooms, have adequate ventilation systems. This allows moist air to escape and fresh outdoor air to circulate indoors when weather permits.

Monitor Humidity Levels with Sensors

Consider installing humidity sensors throughout your home. These sensors can provide real-time information about the humidity levels in different rooms. By monitoring these levels, you can take appropriate measures if they exceed or fall below the recommended range.

Be Mindful of Outdoor Weather Conditions

Outdoor weather conditions can impact indoor humidity levels. During hot and humid weather, it's important to keep windows and doors closed to prevent excess moisture from entering your home. On the other hand, during dry winter, using a humidifier can add moisture back into the air if necessary.

By following these maintenance tips for controlling humidity levels, you can create a healthier indoor environment with better air quality. Remember that maintaining proper humidity not only helps prevent mold growth but also contributes to overall comfort and well-being.

Remember that maintaining proper humidity not only helps prevent mold growth but also contributes to overall comfort and well-being. By following these maintenance tips for controlling humidity levels, you can create a healthier indoor environment with better air excellence.

Choosing Low-Emission Building Materials and Furniture

Choosing the right materials and furniture is crucial. Here are some tips to help you make informed choices:

Make informed choices when selecting materials with low VOC emissions

Volatile Organic Compounds (VOCs) are chemicals that can be released from various products, such as paints, adhesives, and cleaning agents. These chemicals can contribute to poor indoor air quality and may cause health issues. To minimize VOC emissions in your home, consider the following:

  • Look for products labeled as "low VOC" or "zero VOC."

  • Opt for water-based paints instead of oil-based ones.

  • Use natural cleaning products or those specifically labeled as low in VOCs.

Invest in furniture made from sustainable, non-toxic materials

Furniture can also release harmful chemicals into the air, affecting indoor air quality. To reduce these emissions, consider the following options:

  • Choose furniture made from sustainably sourced materials like bamboo or reclaimed wood.

  • Look for furniture certified as low-emission or free of toxic substances.

  • Avoid furniture with foam cushions treated with flame retardants.

Avoid products containing harmful chemicals like formaldehyde

Formaldehyde is a common chemical in many household products, such as pressed wood furniture, cabinets, and flooring. It emits harmful gases that can negatively impact indoor air quality. Here's what you can do:

  • Opt for solid wood furniture instead of pressed wood products.

  • Check product labels for formaldehyde-free certifications.

  • Allow new items to off-gas in a well-ventilated area before bringing them indoors.

By making conscious choices about the materials and furniture you bring into your home, you can significantly improve indoor air quality and create a healthier living environment for yourself and your family.

“HVAC filters with a MERV rating of 7 to 13 are nearly as effective as HEPA filters at trapping airborne particles.”

Regular Cleaning and Filter Replacement for Cleaner Air

Regular cleaning and filter replacement are essential maintenance tips for indoor air quality systems. By following these practices, you can ensure cleaner air in your home or office.

Clean surfaces regularly using microfiber cloths or HEPA vacuum cleaners

To maintain clean air, it's important to clean surfaces using microfiber cloths or HEPA vacuum cleaners regularly. These tools effectively trap dust and allergens, preventing them from circulating in the air. Focus on areas prone to dust accumulation, such as shelves, countertops, and furniture.

Frequently replace HVAC filters according to manufacturer's recommendations.

Air filters play a crucial role in maintaining indoor air quality. They help capture airborne particles like dust, pollen, and pet dander. It's important to replace these filters according to the manufacturer's recommendations frequently. This ensures that they continue to function effectively in filtering out pollutants from the air.

Regularly clean ducts, vents, and other components of your HVAC system

In addition to filter replacement, regular cleaning of ducts, vents, and other components of your HVAC system is vital for maintaining clean air. Over time, these areas can accumulate dirt and debris, which can hinder proper airflow and contribute to poor indoor air quality. Consider hiring a professional service provider specializing in HVAC maintenance to clean these components thoroughly.

By implementing regular cleaning practices and adhering to filter replacement schedules recommended by manufacturers, you can significantly improve the quality of the air you breathe indoors.

Importance of Proper Ventilation and AC Maintenance

Regular HVAC upkeep, including clean coils and ducts, is vital for optimal indoor air quality, preventing dust and allergen buildup and reducing respiratory risks. Ensure unblocked vents for efficient airflow and consider energy recovery ventilators (ERVs) for fresh air exchange. Timely maintenance and repairs not only purify the air but also prolong your system's life, ensuring peak performance and a healthier home environment.

Plants: Nature's Air Purifiers

Plants not only add a touch of greenery to your indoor space but can also help improve the air quality. Certain plants can remove toxins and release oxygen, creating a healthier environment for you and your family[3].

Easy-to-Care-For Air-Purifying Plants

Here are some examples of air-purifying plants that are low-maintenance and perfect for beginners:

  • Snake Plant: Known for its resilience and ability to filter out formaldehyde.

  • Peace Lily: Helps remove common indoor pollutants like benzene and trichloroethylene.

  • Spider Plant: Effective at removing carbon monoxide and other harmful substances.

  • Aloe Vera: Not only does it purify the air, but it also has healing properties for burns and skin irritations.

“Proper humidity control can reduce the survival rate of flu viruses on surfaces and in the air, studies suggest.”

Incorporating Plants into Your Indoor Environment

Now that you know which plants can improve your indoor air quality, here are some tips on how to incorporate them into your living space:

  1. Choose the right location: Place your plants where they can receive adequate sunlight or indirect light if they prefer shade.

  2. Proper watering: Each plant has different water requirements, so make sure to research the specific needs of each plant. Overwatering can lead to root rot, while underwatering can cause wilting[3].

  3. Regular maintenance: Monitor your plants for signs of pests or diseases. Prune dead leaves or flowers to promote healthy growth.

  4. Clean leaves regularly: Dust can accumulate on plant leaves, hindering their photosynthesis ability. Wipe down leaves with a damp cloth periodically.

  5. Rotate positions: To ensure even growth, rotate your plants every few weeks so that all sides receive equal exposure to light.

By incorporating these easy-to-care-for air-purifying plants into your indoor environment and following proper maintenance practices, you can enhance the air quality in your home while enjoying the beauty and benefits of nature.


1. How often should I clean or replace my HVAC filters?

It is recommended to clean or replace HVAC filters every 1-3 months depending on the type of filter used, household size, pets present in the home, and environmental conditions. Regular filter maintenance ensures efficient airflow and helps trap airborne particles effectively.

2. Can I improve indoor air quality by opening windows?

Opening windows can help improve indoor air quality by allowing fresh outdoor air to circulate inside. However, this may not be suitable in areas with high outdoor pollution or during extreme weather conditions. Utilizing proper ventilation systems or investing in mechanical ventilation options like energy recovery ventilators (ERVs) can provide controlled fresh airflow without compromising comfort.

3. How does humidity affect indoor air quality?

High humidity levels can promote mold growth and worsen respiratory issues such as asthma or allergies. On the other hand, low humidity can cause dryness of skin and mucous membranes, leading to discomfort. Maintaining optimal humidity levels between 30-50% can help create a healthier indoor environment.

4. Are air purifiers effective in improving indoor air quality?

Air purifiers can effectively remove certain airborne pollutants, such as dust, pollen, pet dander, and smoke particles, from the air. However, their effectiveness may vary depending on the type of cleaner and the specific pollutants you are targeting. It is important to choose an air purifier that suits your needs and consider factors like room size and filtration technology.

5. Can using natural cleaning products improve indoor air quality?

Using natural cleaning products can help reduce exposure to harsh chemicals in conventional cleaners, which may contribute to poor indoor air quality. Opting for eco-friendly alternatives or making your cleaning solutions using ingredients like vinegar, baking soda, or lemon juice can be a healthier choice for both you and the environment.


Maintaining indoor air quality is essential for a healthy environment. Combat indoor pollution by using low-emission materials, controlling humidity, and ensuring proper ventilation. Regular HVAC maintenance reduces pollutants like dust, allergens, and VOCs, promoting respiratory health and well-being. Adhere to maintenance guidelines for cleaner air and a better quality of life.

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