Impact of Extreme Weather on Indoor Air Quality and Solutions
Extreme weather is occurring more frequently and has a direct impact on indoor air quality. Many people do not realize that heavy rain, heatwaves, haze, and storms can significantly reduce indoor air quality, both in residential homes and commercial buildings.
If not properly managed, extreme weather can lead to increased humidity, pollutant buildup, and the growth of harmful microorganisms that pose health risks.
How Does Extreme Weather Affect Indoor Air Quality?
1. Heavy Rain and Flooding Increase the Risk of Mold
One of the most common forms of extreme weather in Indonesia is heavy rainfall and flooding. These conditions increase indoor humidity levels. Humidity above 60% can reduce indoor air quality because it triggers:
- Mold growth
- Airborne mold spores
- Musty odors
- Increased risk of allergies and respiratory issues
Within 24–48 hours of water exposure, mold can begin to grow and further deteriorate indoor air quality.
2. Heatwaves Trap Pollutants Indoors
During extreme heatwaves, people tend to keep buildings tightly closed and run air conditioning throughout the day. As a result:
- Natural ventilation decreases
- Carbon dioxide (CO₂) levels increase
- Volatile Organic Compounds (VOCs) become trapped
- AC filters become dirty more quickly
These conditions lead to declining indoor air quality and increase the risk of virus transmission in enclosed spaces.
3. Haze and High Pollution Increase PM2.5 Exposure
Extreme weather events such as forest fires and pollution spikes cause a surge in PM2.5 particles. These fine particles can enter buildings through door gaps, windows, and ventilation systems. Without adequate filtration, indoor air quality can deteriorate even when occupants remain inside the building.
4. Strong Winds and Storms Bring Dust and Allergens Indoors
Extreme weather in the form of storms and strong winds can increase the infiltration of dust and allergens. If the HVAC system is not properly maintained, indoor air quality will further decline due to particle buildup in ductwork and filters.
Solutions to Maintain Indoor Air Quality During Extreme Weather
Maintaining indoor air quality during extreme weather requires a comprehensive approach:
- Maintain ideal humidity levels between 40–60%
- Use at least MERV 13 or HEPA filters
- Perform routine HVAC maintenance
- Monitor indoor air quality regularly
- Use technologies that support AC system cleanliness
One solution widely used in the commercial sector is Gelair technology.
Maintaining indoor air quality during extreme weather requires a comprehensive approach:
- Maintain ideal humidity levels between 40–60%
- Use at least MERV 13 or HEPA filters
- Perform routine HVAC maintenance
- Monitor indoor air quality regularly
- Use technologies that support AC system cleanliness
One solution widely used in the commercial sector is Gelair technology.
The Role of Gelair in Supporting Indoor Air Quality
Gelair Air Treatment is applied to AC filters and HVAC systems to help maintain system cleanliness. Its function supports improved indoor air quality by:
- Helping reduce bacterial and mold growth on filters
- Minimizing unpleasant odors caused by high humidity
- Supporting filtration performance during extreme weather
- Helping maintain HVAC system hygiene
During extreme weather conditions such as heavy rainfall or heatwaves, additional protection for air conditioning systems becomes increasingly important to keep indoor air quality stable.
Conclusion
Extreme weather has a real impact on indoor air quality through increased humidity, pollutant accumulation, and the infiltration of harmful particles. Without proper management, indoor air quality can decline and negatively affect occupant health and comfort. Therefore, humidity control, optimal filtration, routine HVAC maintenance, and the use of technologies such as Gelair are effective preventive measures to address the challenges posed by extreme weather.
FAQ: Extreme Weather & Indoor Air Quality
1. Does extreme weather affect indoor air quality?
Yes. Extreme weather such as heavy rain, heatwaves, and haze can reduce indoor air quality by increasing humidity, trapping pollutants, and allowing PM2.5 particles to enter buildings. This may lead to mold growth, musty odors, and respiratory issues.
2. Why does indoor air quality worsen during the rainy season?
Indoor air quality often worsens during the rainy season because humidity levels rise above 60%. This condition promotes mold and bacterial growth on walls, carpets, and AC systems, making indoor air damp, odorous, and unhealthy.
3. How can indoor air quality be maintained during extreme weather?
To maintain indoor air quality during extreme weather:
- Control humidity at 40–60%
- Use at least MERV 13 or HEPA filters
- Perform routine HVAC maintenance
- Use air treatment technology to maintain filter cleanliness
These steps help prevent mold growth and pollutant buildup.
4. Can outdoor pollution enter and affect indoor air?
Yes. Outdoor pollution such as haze can enter through ventilation systems and building gaps. During extreme weather events, indoor PM2.5 levels can approach outdoor levels if proper filtration is not in place.
5. What is the ideal humidity level for maintaining indoor air quality?
The ideal humidity level for maintaining indoor air quality is 40–60%. Above 60% increases mold risk, while below 40% may cause respiratory irritation and dry skin.
6. What is the impact of extreme weather on commercial buildings and hotels?
Extreme weather can increase humidity, accelerate microbial growth in HVAC systems, and reduce indoor air quality in hotels and commercial buildings. This affects guest comfort, reputation, and occupant health risks.
7. What is the most effective solution to maintain indoor air quality in large buildings?
Effective solutions include high-quality air filtration, automated humidity control, IAQ monitoring, and the use of technologies such as Gelair Air Treatment to help maintain AC system cleanliness and improve indoor air quality.
Check the following topic link for the application of using Gelair in HVAC systems.