Coway Air Purifiers
Coway Air Purifier Rentals & Purchases
Rent or buy Coway air purifiers — Noble Air, Square Fit, Multi-Action, Slim Air, and Ultra Air — across 13 U.S. states. We'll recommend the right model for your room size and space, with in-home or self maintenance depending on the model.
- Model recommendations by room size
- Choose in-home or self maintenance
- Installation across 13 U.S. states
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How to Choose an Air Purifier
Based on the U.S. Environmental Protection Agency (EPA)'s air purifier guidance, here are three things to check before choosing a model.
Measure Your Room
Multiply your room's length by its width to get the area (sq ft), then compare it with the maximum recommended area shown on the product.
Check the CADR
CADR is the amount of clean air delivered per minute. To reduce small particles, make sure the "smoke" CADR is sufficient for your room size.
Look at Filter Types
Particles are handled by high-efficiency filters like HEPA; odors and gases by gas-removal filters like activated carbon.
Filters & Certifications: What to Know
What Makes a HEPA Filter
As defined by the U.S. Department of Energy, a HEPA filter theoretically captures at least 99.97% of 0.3-micron particles. 0.3 microns is the hardest size to capture — larger and smaller particles are filtered even more efficiently.
Coway air purifier filter configurations vary by model — we'll walk you through them during your consultation.
Source: US EPA – What is a HEPA filter?California CARB Certified
Since 2010, portable indoor air purifiers sold in California must be certified by the California Air Resources Board (CARB). Electronic air purifiers must emit no more than 0.050 ppm of ozone.
Anyone can check the certified product list on the CARB website.
Source: CARB – List of CARB-Certified Air Cleaning DevicesAir Purifier FAQs
Which model fits my home size?
Tell us your room size and space type (bedroom, living room, open area) and we'll recommend the right model. As a rule of thumb, look for a CADR of about 65 or more per 100 sq ft.
How are the filters maintained?
Depending on the model, choose technician-visit maintenance or self-maintenance where you replace filters yourself. We'll confirm each model's options during your consultation.
Are there standards for air purifiers sold in California?
Yes. Portable indoor air purifiers sold in California must be CARB certified, and electronic models must meet the 0.050 ppm or less ozone emission standard.
Are there any rental promotions?
Air purifier rental promotions change monthly. See this month's promotions
Not Sure Which Model Fits?
Just tell us your room size and space type, and we'll recommend the right model plus this month's offers.