Description
Coway Square Fit Air Purifier (AP-2425H) at a Glance
* Based on manufacturer comparison and test conditions. Perceived noise and space efficiency may vary with placement and usage environment.
Key Features
Square Fit Design for Large Spaces
Its 14 × 14.4-inch footprint and straight-line design sit well in living rooms or offices. Choose White or Pebble Gray to match your space.
4-Stage Filter System That Purifies from Both Sides
Applies the Pre-Filter, Double Deodorization Filter, Deodorization Filter, and Particulate Filter in sequence to manage large dust, everyday odors, and fine particles step by step.
Real-Time Air Quality Display & Smart Mode
Check current indoor conditions with the 4-color LED air quality display and PM readout. Smart Mode automatically adjusts fan speed to the detected air quality.
Ultra-Quiet Sleep Mode as Low as 23dB
Run it quieter at bedtime — a good fit for large bedrooms, quiet living rooms, and workspaces where low noise matters.
Specifications
| Model | AP-2425H |
|---|---|
| Product Name | Square Fit Air Purifier |
| Coverage Area | 2 ACH: 1,403 ft² / 1 ACH: 2,805 ft² |
| Filter Configuration | Pre-Filter · Double Deodorization Filter · Deodorization Filter · Particulate Filter |
| Modes | Smart Mode · Eco Mode · Ultra-Quiet Sleep Mode |
| Air Quality Display | 4-color LED Air Quality Indicator · PM Indicator |
| Size | 14 × 14.4 × 21.1 in (W × D × H) |
| Weight | Approx. 24.3 lb |
| Color | White · Pebble Gray |
Coverage areas are ACH-based: 2 ACH purifies the room's air roughly once every 30 minutes; 1 ACH, roughly once every 60 minutes.
Filters & Maintenance
| Filter | Role | Replacement & Care Info | Official Price |
|---|---|---|---|
| Pre-Filter | First-stage capture of large dust, hair, pet hair, and more | Wash and clean regularly | Washable |
| Double Deodorization Filter | First-stage everyday odor control | No confirmed AP-2425H-specific official listing | No dedicated pricing confirmed |
| Deodorization Filter | Odor and harmful gas management | No confirmed AP-2425H-specific official listing | No dedicated pricing confirmed |
| Particulate Filter | Captures fine particles | No confirmed AP-2425H-specific official listing | No dedicated pricing confirmed |
Filter configurations are confirmed on the Coway USA official product page as of September 2026, but we could not confirm individual replacement filter prices or recommended cycles for the AP-2425H in the official filter shop. We did not apply prices from other models whose compatibility is unconfirmed.
Automatically Adjusts to Air Quality
| Smart Mode | Automatically adjusts fan speed to real-time air quality |
|---|---|
| Eco Mode | Designed to stop the fan while air stays clean and resume when pollution is detected |
| Sleep Mode | Low-noise operation as low as 23dB per manufacturer specs |
| Air Quality | Check indoor air quality via the 4-color LED and PM display |
Rental & Purchase Pricing
| Service Plan | Term | Standard Regular Rate |
|---|---|---|
| In-Home Maintenance | 6 Yrs | $42.99 / month |
| In-Home Maintenance | 5 Yrs | $47.99 / month |
| In-Home Maintenance | 3 Yrs | $52.99 / month |
| Self-Maintenance | 6 Yrs | $38.99 / month |
| Self-Maintenance | 3 Yrs | $48.99 / month |
| One Pay | — | $1,499 |
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 final rates and promotions when ordering or consulting.
Ideal Spaces
Large Living Rooms & Open Living Spaces
With 1,403 ft² of coverage at 2 ACH, it can handle large areas like living rooms, family rooms, and open kitchens.
Noise-Sensitive Bedrooms & Workspaces
The 23dB Sleep Mode and automatic air-quality response keep it running comfortably in quiet environments.
For Homes That Want Auto Operation & Space Efficiency
Smart and Eco modes plus a relatively compact square design balance performance with placement efficiency.
Frequently Asked Questions
What is the coverage area of the AP-2425H?
Per the current Coway USA official product page: 1,403 ft² at 2 ACH and 2,805 ft² at 1 ACH. 2 ACH means the room's air is purified roughly once every 30 minutes.
What filters does the AP-2425H use?
It uses a 4-stage filter system: Pre-Filter, Double Deodorization Filter, Deodorization Filter, and Particulate Filter.
Does the fan speed change automatically with air quality?
Yes. Smart Mode automatically adjusts fan speed to real-time air quality, and the 4-color LED air quality display plus particle readout show current conditions.
How does Eco Mode work?
Designed to cut unnecessary energy use by stopping the fan while air stays clean and resuming when pollution is detected again.
Is it quiet enough for a bedroom?
The manufacturer lists the Ultra-Quiet Sleep Mode's lowest noise at 23dB. Perceived noise may vary with fan speed and installation environment.
What are the dimensions and weight?
It measures about 14 × 14.4 × 21.1 inches and weighs about 24.3 lb.
How do I check replacement filter prices and schedules?
We could not confirm a clearly linked listing with compatible models, prices, and replacement cycles for AP-2425H-specific replacement filters in the current Coway USA official filter shop. Rental customers should follow their Heart Service schedule; self-maintenance and one-time-purchase customers should confirm the latest filter info when ordering.
How much are the rental and one-time purchase prices?
At regular rates: in-home maintenance $42.99/mo for 6 years, $47.99/mo for 5 years, $52.99/mo for 3 years; self-maintenance Standard $38.99/mo for 6 years, $48.99/mo for 3 years. One-time regular price $1,499, taxes not included.
