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Coway / Air purifiers

Coway Airmega 250

A room purifier with a washable prefilter and a combined carbon/HEPA Max2 filter. Its 465-square-foot room claim uses four air changes per hour.

Sources checked 2026-09-12 to 2026-09-30 · 1 package

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At a glance

Smoke CADR

249 cfm

Compare like-for-like particle ratings; this is not a gas-removal or health-outcome rating.

Sources · 2026-09-12

Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified.Coway: Air-filter ratings and CADR unitsChecked 2026-09-30. We reviewed the official page text on the check date. Checkout options were not verified.

Review due. Check the current source before buying.

Advertised room area

465 sq ft

Area claims at different ACH are not directly equivalent; check ceiling height and layout.

Manufacturer sizing assumes an eight-foot ceiling and maximum fan speed.

Sources · 2026-09-12

Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified.Coway: CADR and room-sizing explanationChecked 2026-09-30. We reviewed the official page text on the check date. Checkout options were not verified.

Review due. Check the current source before buying.

Room-area air changes

4 ACH

Read this together with room area. Actual airflow depends on placement and operating setting.

Source · 2026-09-12

Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified.

Review due. Check the current source before buying.

The purchase package

Coway Airmega 250 — standard US unit

Includes the standard prefilter and Max2 configuration; no spare-filter bundle.

Source · 2026-09-12

Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified.

Review due. Check the current source before buying.

Select: Airmega 250 single purifier.

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Specifications & sources

The starting packages are single room purifiers with standard filters. Particle removal, gas removal and health outcomes are different claims.

Open a field explanation or source for its conditions.

Documented specifications and exact purchase packages
Compare the details	Coway Airmega 250 — standard US unit
US purchase package	Airmega 250 single purifier. Product & sources Includes the standard prefilter and Max2 configuration; no spare-filter bundle. Source · 2026-09-12 Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
External rating	4.7 out of 5 from 79 ratings · Coway US store · Checked October 23, 2026.
Smoke CADR Clean-air delivery rate specifically identified for smoke particles. Compare like-for-like particle ratings; this is not a gas-removal or health-outcome rating.	249 cfm Sources · 2026-09-12 Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified.Coway: Air-filter ratings and CADR unitsChecked 2026-09-30. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Dust CADR Clean-air delivery rate specifically identified for dust. Keep this separate from smoke and pollen CADR.	261 cfm Sources · 2026-09-12 Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified.Coway: Air-filter ratings and CADR unitsChecked 2026-09-30. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Pollen CADR Clean-air delivery rate specifically identified for pollen. Use the same particle type when comparing models.	230 cfm Sources · 2026-09-12 Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified.Coway: Air-filter ratings and CADR unitsChecked 2026-09-30. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
CADR without a named particle type A maker-listed CADR whose particle type is not specified by the cited source. This value is not substituted for a smoke, dust or pollen rating.	Not verified We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice. The source supplies separate smoke, dust and pollen ratings. Source · 2026-09-12 Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Advertised room area The documented room area at the air-change assumption below. Area claims at different ACH are not directly equivalent; check ceiling height and layout.	465 sq ftManufacturer sizing assumes an eight-foot ceiling and maximum fan speed. Sources · 2026-09-12 Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified.Coway: CADR and room-sizing explanationChecked 2026-09-30. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Room-area air changes Air changes per hour used for the displayed room-area claim. Read this together with room area. Actual airflow depends on placement and operating setting.	4 ACH Source · 2026-09-12 Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Rated power The documented rated or maximum electrical input, as qualified by the source. Actual energy use depends on the fan setting. Read the source conditions alongside the value.	64 WManufacturer power-consumption specification. Source · 2026-09-12 Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
App control Whether the listed model supports control through the manufacturer’s app. Check phone requirements, network setup and which controls remain available on the unit.	Not verified We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice. App control is not established for this exact model by the cited page. Source · 2026-09-12 Coway: Airmega 250 US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Standard replacement filter The named replacement for the standard included filter where verified. Match the exact purifier model and distinguish standard filters from optional specialty versions.	Airmega 250 Max2 filter (3109144) Source · 2026-09-12 Coway: Airmega 250 Max2 filterChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Questions to check before buying	This is Airmega 250, not the 250S or 250 Art. App features from those names are not assumed.

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Review Coway Airmega 250 — standard US unit