Views: 30 Author: Site Editor Publish Time: 2025-08-01 Origin: Site
During the summer months, I find myself spending long hours indoors under the comfort of air conditioning – and I am not alone. Whether at home or in the office, air-conditioned environments have become essential for staying cool. But like many, I began to notice a persistent sore throat and occasional cough after several days indoors. At first, I blamed the weather. Later, I realized the real culprit: poor indoor air quality caused by neglected air conditioner filters.
According to the World Health Organization, air pollution – including indoor air – is responsible for an estimated 3.8 million premature deaths annually due to household exposure. Much of this is attributed to pollutants like dust, mold spores, pollen, and volatile organic compounds (VOCs) trapped in enclosed spaces. In summer, when windows remain shut and AC systems run constantly, these airborne particles recirculate through HVAC systems if filters are not properly maintained.
One study published in the International Journal of Environmental Research and Public Health (2021) found that poor ventilation and contaminated air filters in office buildings increased respiratory infection risks by up to 40%. This is especially concerning for vulnerable groups such as children, the elderly, or those with pre-existing respiratory issues like asthma or COPD.
Air conditioner filters serve as the first line of defense against airborne contaminants. When clogged or outdated, they lose efficiency and instead circulate harmful particles back into the room. This results in:
Increased risk of respiratory infections
Elevated indoor allergen levels
Greater energy consumption and reduced system efficiency
Proper filtration plays a key role in reducing microbial buildup and maintaining breathable indoor air.
While regular cleaning helps, not all filters are designed for long-term reuse. Over time, their filtration capabilities degrade. A study by the U.S. Environmental Protection Agency (EPA) suggests that high-efficiency filters (such as MERV 13 or higher) can capture up to 90% of airborne particles, but only if replaced at recommended intervals.
Businesses and facility managers should:
Clean washable filters every 2–4 weeks
Replace disposable filters every 2–3 months
Upgrade to higher-grade filters when indoor pollution levels are high
If you're in charge of maintaining buildings, hotels, shopping centers, or office spaces, indoor air quality is not just a comfort issue – it's a health and productivity factor. Employees working in poorly ventilated offices may experience more sick days, while customers may feel uncomfortable staying in enclosed spaces with bad air.
By partnering with a reliable air filter supplier, you ensure that your HVAC systems function efficiently and your indoor environment stays safe.
At Nanjing Blue Sky Filter, we specialize in high-quality air conditioner filters suitable for commercial, industrial, and residential systems. Whether you need:
Panel filters
Pleated filters
MERV-rated HVAC filters
Custom-sized or OEM/ODM filters
We provide full-scale solutions tailored to your business needs.
With years of experience in filter manufacturing and global B2B supply, we are committed to helping clients improve air quality and reduce health risks through reliable filtration products.
Contact us today at sales@bluesky-filter.com
Visit our website: www.bluesky-filter.com
Nanjing Blue Sky Filter Custom Service
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