Description
Coway Ultra Air Purifier (AP-3018B) at a Glance
Coverage shown per the current Coway USA official product page. Note: the previous CowayCA page listed 1,688 ft² at 2 ACH, which differs.
Key Features
Quattro Power with Dual Motors & Fans
Draws polluted air from front and back, then dual motors and fans exhaust purified air upward — a high-capacity design built for fast circulation in large spaces.
Wide Circulation for Even Coverage of Large Spaces
A mode designed to create wide-reaching airflow that purifies the whole space evenly. Ideal for large areas like living rooms, offices, and shared spaces.
Turbo Circulation: Fast Purification Near and Far
Both engines work together to powerfully circulate nearby and distant air at once — handy when you want faster purification.
Large-Capacity Design with Reduced Vibration & Noise
Engineered to reduce resonance noise and vibration, so it fits environments like schools, offices, and reading rooms where large coverage and quiet both matter.
Specifications
| Model | AP-3018B |
|---|---|
| Product Name | Ultra Air Purifier |
| Coverage Area | 2 ACH: 1,496 ft² (138 m²) / 1 ACH: 2,992 ft² (277 m²) |
| KACA-rated area | 1,076 ft² |
| Filter Configuration | Pre Filter · Fine Dust Filter · Deodorization Filter · Particulate Filter |
| Circulation Modes | Wide Circulation · Intensive Circulation · Turbo Circulation |
| Special Construction | Dual motors · dual fans · 14-filter configuration |
| Size | Approx. 19.7 × 12.9 × 31.5 in (W × D × H) |
| Weight | Approx. 44.1 lb |
| Color | White |
Filters & Replacement Schedule
| Filter | Role | Recommended Replacement | Official Price |
|---|---|---|---|
| Pre Filter | First-stage capture of large dust, hair, and more | Wash and clean regularly | Washable |
| Fine Dust Filter | Additional fine-dust capture | 4–6 months | $40 |
| Deodorization Filter | Everyday odor and gas management | 24 months | $46 |
| Particulate Filter | Captures fine particles | 12 months | $69 |
Per the Coway USA official filter shop as of September 2026. Actual replacement timing may vary with usage hours, air pollution levels, and installation environment.
Air Circulation for Large Spaces
| Wide Circulation | Forms wide-reaching airflow to circulate the entire space evenly |
|---|---|
| Intensive Circulation | Quickly purifies air around the unit |
| Turbo Circulation | Uses dual engines to powerfully circulate both nearby and distant air |
| Particle Test | The manufacturer reports 0.01㎛ particle removal test results from a sealed test environment. Actual performance may vary with room size and usage environment. |
Rental & Purchase Pricing
| Service Plan | Term | Standard Regular Rate |
|---|---|---|
| In-Home Maintenance | 6 Yrs | $55.99 / month |
| In-Home Maintenance | 5 Yrs | $63.99 / month |
| In-Home Maintenance | 3 Yrs | $66.99 / month |
| Self-Maintenance | 6 Yrs | $51.99 / month |
| Self-Maintenance | 3 Yrs | $62.99 / month |
| One Pay | — | $1,899 |
Rental and lump-sum promotions may change by period. Check currently available offers.
View This Month's Promotions →Regular rates as of September 2026; taxes not included. Extended regional rates excluded — Standard only. Please confirm the final price when ordering or consulting.
Ideal Spaces
Large Living Rooms & Open Spaces
Its 1,496 ft² coverage at 2 ACH and dual-engine design keep air moving across large living spaces.
Offices, Classrooms & Shared Spaces
Well suited to environments where the Wide and Turbo circulation modes need to move air quickly across large spaces.
For Households That Want Organized Filter Maintenance
The Fine Dust, Deodorization, and Particulate filters each have their own replacement cycle, making it easy to plan regular filter maintenance.
Frequently Asked Questions
What is the coverage area of the AP-3018B?
Per the current Coway USA official product page: 1,496 ft² at 2 ACH and 2,992 ft² at 1 ACH. 2 ACH means the room's air is purified roughly once every 30 minutes.
What is the Quattro Power system?
Dual motors, dual fans, and multi-filter banks front and back draw polluted air from multiple directions across large spaces and exhaust purified air upward.
What circulation modes are available?
Supports Wide Circulation, Intensive Circulation, and Turbo Circulation — even circulation across large spaces, focused purification nearby, and fast circulation both near and far.
How are the filters configured?
It uses a 4-stage filter system: Pre Filter, Fine Dust Filter, Deodorization Filter, and Particulate Filter.
What are the filter prices and replacement cycles?
Per the Coway USA official filter shop as of September 2026: Fine Dust Filter $40 every 4–6 months, Deodorization Filter $46 every 24 months, Particulate Filter $69 every 12 months.
What are the dimensions and weight?
Per the current Coway USA official product page, it measures about 19.7 × 12.9 × 31.5 inches and weighs about 44.1 lb.
Can I see air quality as numbers?
Yes. It's designed to show air quality status along with PM2.5 and PM10 readings on the display.
How much are the rental and one-time purchase prices?
At regular rates: in-home maintenance $55.99/mo for 6 years, $63.99/mo for 5 years, $66.99/mo for 3 years; self-maintenance Standard $51.99/mo for 6 years, $62.99/mo for 3 years. One-time regular price $1,899, taxes not included.
Recent Installation Areas
These are areas where customers have had this product installed. Only cities are shown to protect customer privacy.
- Mc Lean, VA
- Cerritos, CA
- VA
- CA
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