Reader's Question >>>
“The family wants to buy an air purifier, but the market is full of options. Can you ask the reporter to help us get expert advice?†Ms. Wu called in, explaining that as winter smog increases, she wants to add an air purifier to her home. However, with so many products available and a wide range of prices, she’s seeking more professional guidance to make an informed decision.
Reporter's Interview >>>
The reporter discovered that while there are many air purifier brands on the market, not all of them meet quality standards. Some manufacturers even mislead consumers through exaggerated advertising or unclear marketing strategies.
Choose Higher CADR at the Same Price
Experts suggest that when the price is similar, consumers should look for higher CADR values. CADR, or Clean Air Delivery Rate, measures how effectively an air purifier can clean the air. A higher CADR means better performance, making it a key factor when comparing models within the same price range.
Consider CCM for Long-Term Performance
Air purifiers differ from other appliances because they need to be evaluated based on both their purification capability and their lifespan. The 2016 national standard for air purifiers now includes two core parameters: CADR (clean air delivery rate) and CCM (cumulative contaminant mass), which represent the device’s cleaning ability and long-term efficiency.
CADR reflects how quickly a purifier can remove pollutants, while CCM shows how long the device can maintain its effectiveness. The higher the CCM, the longer the purifier will perform efficiently, meaning it’s more durable and cost-effective in the long run.
Don’t Be Tempted by High Prices
According to a comparison test conducted by Jiangsu’s Quality Supervision Department on 20 air purifier brands, there is no direct correlation between price and performance when it comes to removing particulate matter. Therefore, consumers don’t need to go for the most expensive models. Instead, they should choose one that fits their specific needs and room size.
For example, if the ceiling height is between 2.4 to 2.6 meters and the room area is around 16 square meters, the applicable area of the purifier can be estimated using the formula: applicable area = CADR × k, where k ranges from 0.08 to 0.12. Choosing a model that matches your space ensures optimal performance without unnecessary costs or energy waste.
Replace Filters Regularly to Avoid Secondary Pollution
One important thing to note is that users must replace the filter regularly to prevent secondary pollution. According to survey data, many users are unaware that filters need to be replaced on a schedule. Industry experts warn that the filter is the core component of the purifier and has a limited lifespan. If not replaced in time, the filter may become saturated, reducing its ability to capture pollutants like PM2.5 and potentially causing re-pollution.
Additionally, air purifiers do not produce oxygen. Prolonged use in a sealed space can lead to lower oxygen levels, which may affect health. It’s recommended to open windows occasionally when using an air purifier for extended periods to ensure proper ventilation.
AST Industry Co.,LTD , https://www.astsoundchip.com