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indoor air quality in autumn

Why Indoor Air Quality Decreases During Autumn

As the vibrant colours of autumn foliage paint the outdoor landscape, the cosy allure of spending more time indoors becomes irresistible. Fall invites us to nestle in the warmth of our homes, savouring the aroma of spiced cider while we cosy up in fuzzy socks.

However, beneath this perfect autumn picture lies a potential hazard that often goes unnoticed: indoor air quality. The very activities that bring us comfort during the fall can inadvertently compromise the air we breathe inside our homes.

In today’s blog, we’ll explore the unsuspecting culprits that impact air quality in fall and what you can do to mitigate air pollution and improve air quality indoors.

6 Reasons For Decreased Air Quality

Combatting Autumn Allergies

To mitigate the impact of these allergens on indoor air quality, proactive measures are necessary. An effective solution lies in the regular maintenance of HVAC systems, particularly through the cleaning or replacement of air filters. By ensuring the unimpeded flow of air through these filters, pollutants are effectively trapped, preventing their circulation within the home environment.


Ventilation Challenges in Fall

Unlike the breezy openness of spring and summer, Fall brings a reduction in natural ventilation as the inclination to keep windows open diminishes with the cooling temperatures. This decrease in airflow limits the dispersion of indoor air pollutants and germs, leading to their accumulation within enclosed spaces.

Implementing a whole-home ventilation system facilitates the dilution of airborne contaminants, ensuring a healthier indoor environment. These systems work by exchanging stale indoor air with fresh outdoor air, even when windows are closed, promoting optimal air circulation and reducing the concentration of pollutants.


Addressing Low Humidity Concerns

While the decline in humidity during Fall offers respite from oppressive summer conditions, it introduces its own set of challenges. The combination of dry outdoor air and indoor heating systems exacerbates atmospheric dryness, resulting in adverse health effects such as dry skin and respiratory irritation.

Installing a humidifier, either as a standalone unit or integrated into the HVAC system, helps maintain optimal humidity levels, fostering comfort and well-being. By releasing moisture into the air, humidifiers alleviate dryness, soothing irritated respiratory passages and enhancing overall indoor air quality.


Preventing Cold and Flu Transmission

The onset of colder weather coincides with the onset of cold and flu season, necessitating proactive measures to minimise the spread of illnesses. With reduced ventilation in the Fall, indoor air quality becomes paramount in combating viral transmission.

Employing a comprehensive approach involving air purification, filtration, and ventilation systems significantly reduces the presence of germs, safeguarding indoor air quality and promoting respiratory health. Air purifiers equipped with HEPA filters effectively capture airborne viruses and bacteria, while ventilation systems ensure the constant circulation of fresh air, diluting indoor pollutants and minimising the risk of respiratory infections.


Mitigating Pollution Effects

Fall brings an uptick in air pollution, attributable to increased energy consumption and heightened vehicular traffic. Elevated indoor pollutant levels pose a significant concern, necessitating the implementation of effective mitigation strategies.

Whole-home air purifiers offer a proactive solution by effectively eliminating airborne contaminants, thereby enhancing indoor air quality and mitigating health risks. These purification systems utilise advanced filtration technologies to remove pollutants such as particulate matter, volatile organic compounds (VOCs), and allergens, ensuring a cleaner and healthier indoor environment.


Controlling Mold Growth

Fall’s increased humidity levels, coupled with sporadic heavy rainstorms, create conducive conditions for mould growth within homes. Left unchecked, mould proliferation can compromise indoor air quality and pose health hazards.

Vigilant cleaning practices, coupled with the integration of HVAC solutions such as high-efficiency air filters and humidity control systems, serve as effective preventive measures against mould infestation. By maintaining cleanliness and controlling moisture levels, homeowners can minimise the risk of mould growth and preserve indoor air quality throughout the Fall season.

autumn season

Tips to Improve Air Quality in Fall

Improving indoor air quality during the fall is essential for your health and well-being. Here are some tips to help you maintain good air quality, with a focus on air quality monitoring.

1. Start Air Quality Monitoring

First, invest in an air quality monitor to establish a baseline for indoor air quality, allowing you to track changes and respond swiftly to fluctuations. Additionally, monitor outdoor air quality in your area to make informed decisions about protecting your indoor air quality.


2. Improve Ventilation & Humidity

Ensure proper ventilation by opening windows and doors when the weather allows, and outdoor air quality is good. Use exhaust fans in bathrooms and kitchens to remove moisture and air pollutants at the source. Seal gaps and cracks in windows and doors to prevent outdoor pollutants from entering your home, and ensure proper insulation for temperature and humidity regulation.


3. Invest in Air Purifiers

Consider using HEPA air purifiers equipped with activated carbon filters to remove airborne particles, allergens, and odours. Maintain indoor humidity levels within the recommended range of 30% to 50% when using humidifiers and dehumidifiers.


4. Start Cleaning Regularly

Dust, vacuum, and mop your home regularly to remove allergens, dust mites, and pet dander. Use natural, non-toxic cleaning products to reduce the release of harmful chemicals. Schedule professional HVAC maintenance to clean and inspect your heating and cooling systems, and replace filters regularly to ensure proper airflow and filtration.


5. Avoid Polluting Activities

Avoid scented candles, air fresheners, and room sprays containing synthetic fragrances, as they can release VOCs and irritants into the air. When painting or engaging in DIY projects involving products containing VOCs, work in well-ventilated areas, use respirators if necessary, and allow time for fumes to dissipate.

Adopting Indoor Air Quality Solutions

The versatility of indoor air quality systems lies in their multifunctional capabilities. Whether adopting a singular system or integrating multiple solutions, the overarching goal remains consistent: enhancing indoor air quality to promote a healthier and more comfortable living environment.


By prioritising proactive measures and investing in comprehensive IAQ solutions, individuals can optimise their well-being and elevate their quality of life amidst the seasonal transitions of Fall. From combating allergens and pollutants to controlling humidity levels and preventing mould growth, proactive management of indoor air quality ensures a safe and comfortable indoor environment for occupants throughout the Fall season and beyond.



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