Air purifier · medium-room
Medify MA-25
A compact H13 True HEPA tower that is AHAM-verified for roughly 172 sq ft and competes mainly on its sealed filter and low price.
Total cost of ownership
- Annual filters
- $150/yr
- Device
- $149
- 5-year total
- $899
Certifications
- ANSI/AHAM AC-1smoke, dust, pollen
Overview
The Medify MA-25 is a medium-room air purifier built around a H13 filter. Its Clean Air Delivery Rate is AHAM-verified at 123 cfm, and it uses no ionizer and no ozone-generating stage. Filters run about $150 per year, on the expensive end to run.
By the numbers
- Clean Air Delivery Rate
- 123 cfm (AHAM-verified)
- Real coverage at 4.8 ACH
- ~191 sq ft
- Manufacturer room claim
- 172 sq ft
- Filter
- H13
- Ozone / ionizer
- no ionizer and no ozone-generating stage
- Noise (low)
- 35 dBA
- Power draw
- 35 W
- Annual filter cost
- $150/yr
- 5-year cost of ownership
- $899 (device + filters)
- Certifications
- ANSI/AHAM AC-1
Strengths
- + Safety: 8.0/10
Watch-outs
- - Total Cost of Ownership: 1.0/10
- - Certification: 3.0/10
Who it is for
- · Bedrooms and medium living spaces
- · Anyone sensitive to ozone, or with asthma or allergies
Who should skip it
- · Buyers focused on low running cost - filters are pricey
What to know before buying
- · The MA-25 uses a combined H13 HEPA and activated-carbon filter that Medify rates for roughly 2,500 hours, about three to four months of continuous use.
- · Coverage claims vary by listing, from around 500 sq ft up to 825 sq ft per cycle, so check the time interval attached to any coverage number.
- · Measured noise runs from roughly 20 dB on the lowest setting to about 49 dB on the highest.
How it scored
Verified Performance
7.0/10 · 30%AHAM CADR, true sealed HEPA, air changes per hour, honest room-size match.
- +3AHAM Verifide CADR published A123 cfm (AHAM Verifide) - CADR is third-party verified by AHAM, not a manufacturer claim.
- +2Hits ~5 air changes/hour at rated room B5.4 ACH at 172 sq ft - Delivers at least 4.8 air changes per hour at its rated room size.
- +2Honest room-size claim Brated 172 sq ft, CADR supports 191 - Claimed room size is within what the unit's own CADR can clean.
Total Cost of Ownership
1.0/10 · 25%Computed annual filter cost vs the room-size class median. The number nobody surfaces.
- 0Annual filter cost vs class median A$149.97/yr (above class median (expensive to run)) - Computed annual filter cost scored against the room-size class median.
- +1Washable pre-filter Bwashable pre-filter - A washable pre-filter extends main-filter life and lowers running cost.
Certification
3.0/10 · 15%AHAM Verifide, Energy Star, CARB, published lab efficiency.
- +3Published lab-tested efficiency AAHAM-listed CADR - Filtration performance is independently lab-tested and published.
Safety
8.0/10 · 15%Ozone and ionizer behavior. Ozone generators hard-fail.
- +8No ozone-generating technology Ano ionizer / no ozone - No ionizer, plasma, or ozone-emitting stage.
Practical Fit
6.0/10 · 15%Noise, filter-change indicator, energy draw. Smart features are neutral.
- +4Quiet at low speed B35 dBA low - Runs at 50 dBA or quieter on its lowest useful speed.
- +2Energy draw disclosed B35 W - Discloses power draw at a standard speed.
- ·Smart features (neutral) Capp / auto mode - App control and auto mode are neither rewarded nor penalized.
FAQ
- What filter does the MA-25 take and how often?
- It uses a single combined pre-filter, H13 HEPA, and activated-carbon cartridge rated for about 2,500 hours, which Medify estimates at roughly three to four months of continuous running.
- What room size does it actually cover?
- Listed coverage ranges from about 500 to 825 sq ft, but the larger figures are tied to longer time intervals, so compare the stated time period rather than the square footage alone.
Related guides
This score is our opinion under our published rubric, not a statement of objective fact or a lab test of this product. We score what third-party certifications prove; absence of a certification means we found no verification, not that a product fails to perform. Last reviewed 2026-06-01. Scored under air-v1.0. Prices and certifications are re-verified on a cadence; see the methodology for how each rule fires.