Persistently high TVOC levels can be a concern. This issue is typically caused by a combination of factors related to indoor pollution sources, ventilation, and the purifier itself.
Possible Causes:
1. Release from Indoor Pollution Sources:
Renovation Residue: Continuous off-gassing of formaldehyde, benzene, and other chemicals from building materials like engineered wood, paints, adhesives, and furniture.
Everyday Products: Use of cosmetics, perfumes, cleaning agents, as well as exposure to cigarette smoke, cooking fumes, and printer ink.
Building & Decorative Materials: Volatilization of chemical agents from carpets, curtains, and wallpaper.
2. Insufficient Ventilation:
A tightly sealed room (e.g., when using air conditioning in summer or heating in winter) leads to poor air circulation, causing pollutants to accumulate instead of dispersing.
3. Issues with the Purifier Itself:
Expired Filter: The activated carbon filter, which is crucial for adsorbing TVOCs, may have reached its saturation point. A saturated filter can no longer absorb pollutants and may even release them back into the air (secondary release).
4.Inadequate Purifier Capacity: The room may be too large for the purifier's CADR (Clean Air Delivery Rate), meaning it cannot process the volume of air fast enough to be effective.
Recommended Solutions:
1.Replace the Filter: Ensure your purifier is equipped with an activated carbon filter, the key component for adsorbing TVOCs. If it has been in use for 6-12 months or has reached the manufacturer's recommended replacement cycle, replace it promptly.
2.Use High Fan Speed Mode: For short-term, rapid reduction of high TVOC levels, run the purifier on its maximum fan speed setting to accelerate air circulation and purification.
3.Improve Room Ventilation & Reduce Sources:
Ventilate your home regularly by opening windows, especially after cooking or cleaning.