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    • Home
    • PRODUCT
      • Air Purifier
      • Air Purifier Filter
    • CUSTOMER SUPPORT
      • WARRANTY SUPPORT
      • CERTIFICATION
      • USER MANUAL
      • FAQ
  • Home
  • PRODUCT
    • Air Purifier
    • Air Purifier Filter
  • CUSTOMER SUPPORT
    • WARRANTY SUPPORT
    • CERTIFICATION
    • USER MANUAL
    • FAQ

Frequently Asked Questions

Please reach us at support@siesean.com if you cannot find an answer to your question.

Featuring a 3-stage high-efficiency filtration system, the SIESEAN AP-400 Air Purifiers rapidly cycles the air in a 500 sq. ft. space every 10 minutes, efficiently capturing and reducing smoke particles and dust for improved indoor air quality.


With its advanced filtration that targets particles as fine as 0.1 microns, AP-400 Air Purifiers reduces common allergens like dust, pet dander, and hair, along with persistent odors, for a fresher home environment.


The Air Purifier boasts an impressive CADR rating of 232 CFM for smoke, 240 CFM for dust, and 242 CFM for pollen.Breathe easier with an air purifier designed to significantly improve your home's air.


This lab-tested purifier is proven to effectively capture common household pollutants.It is certified by CARB, UL, and DOE for safety and performance, and independently verified by AHAM for its high CADR rating.Rest assured with operation that is safe, quiet, and dependable.


The AP400 air quality monitor includes a smart filter indicator that alerts you when it's time for a replacement—typically after 800 hours (about 3-4 months) of use. Always choose SIESEAN genuine filters designed for perfect compatibility and longevity (search on Amazon B0FVFQQXDR) 


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