The Korea Consumer Agency found that 16 of 20 low-price compatible air-purifier filters failed to meet performance standards [1].
These findings suggest that budget-friendly alternatives to brand-name filters may not provide the air quality protection consumers expect. The results highlight a potential health risk for users who rely on these third-party products to remove toxins from their homes.
The agency evaluated five different harmful gases, including formaldehyde, ammonia, and acetaldehyde [1]. To meet the required performance standard, filters must show a removal efficiency of at least 70% [1]. However, only four of the 20 products tested met this benchmark [1].
Among the 16 products that failed, the average removal efficiency ranged from 20% to 63% [1]. This indicates a significant gap in efficacy compared to the safety requirements set for air purification technology.
Beyond performance failures, the agency detected the presence of methylisothiazolinone, known as MIT, in some of the filters [1]. This chemical is banned because it is known to cause skin irritation and allergies [2].
"Only four out of 20 products met the criteria for harmful gas removal performance," said reporter Oh Dong-gun of YTN News [1].
The agency conducted the tests as consumers increasingly turn to cheaper compatible filters to reduce maintenance costs. The results indicate that the lower price point often comes at the expense of both efficacy and safety [1].
“Only four out of 20 products met the criteria for harmful gas removal performance”
The failure of 80% of the tested compatible filters demonstrates a lack of quality control in the third-party air filter market. Because these products are often sold as 'compatible' with major brands, consumers may falsely assume they meet the same rigorous safety and performance standards as original equipment manufacturer (OEM) parts. The discovery of banned chemicals like MIT further suggests that some low-cost manufacturers may be bypassing safety regulations to reduce production costs.
