Pros & Cons
Pros
- Removes 99.999% of 0.01-micron particles.
- Covers 780 sq ft with 4 air changes per hour.
- Smart Mode adjusts fan speed based on air quality.
- Eco Mode shuts off fan when air is clean.
- 5-year limited warranty included.
Cons
- Stated 3,120 sq ft coverage misleading for 4 ACH.
- True HEPA filters require periodic replacement.
- No remote control listed in features.
Specifications
7 specs
Customer Reviews
Frequently Asked Questions
Common questions about Coway
Is the Coway 400 effective for removing smoke, allergens, and pet dander from the air?
Yes, the Coway 400 is highly effective, removing 99.999% of 0.01-micron particles, including smoke, allergens, and pet dander, with its True HEPA filters. It's an excellent choice for improving air quality for those with allergies or pets.
What is the recommended room coverage for the Coway 400 for optimal air purification?
For optimal air purification, the Coway 400 is recommended for rooms up to 650 sq ft, providing 4 air changes per hour. Its CADR for smoke is 416, indicating strong performance in effectively cleaning the air within this space.
Does the Coway 400 require filter replacements or ongoing subscriptions?
The Coway 400 does not require any subscriptions. However, its True HEPA filters do require periodic replacement to maintain peak air purification performance. It includes two sets of washable pre-filters to extend filter life.
The Coway 400 marketing title mentions coverage up to 3,120 sq ft. Is this accurate for efficient air cleaning?
While the Coway 400's marketing mentions coverage up to 3,120 sq ft, this likely refers to a single air change. For efficient air cleaning with 4 air changes per hour, it optimally covers rooms up to 650 sq ft.
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