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Compare two products
Pick any two products from our reviews and see specifications, price, buyer ratings and our scores in one table.
Recorded evidence
What separates these listings
- Price snapshot
- $105.99 price gap
- Product A has the lower captured price. This excludes delivery and ongoing costs.
- Editorial assessment
- 0.8-point score gap
- Product B has the higher research score, not a measured performance advantage.
- Specification coverage
- 14 of 15 fields shared
- Shared labels have recorded values on both sides; matching labels do not guarantee matching units or test conditions.
Product A
GermGuardian HEPA Air Purifier Tower - 22" - Gray - AC4825E
- Potential fit
- Small bedrooms and personal workspaces
- Trade-off to resolve
- Limited CADR restricts coverage to small spaces
Product B
COWAY Air Purifier for Home Up to 1,748ft², HEPA Filter for Smoke
- Potential fit
- Mid-sized living areas and bedrooms
- Trade-off to resolve
- Recurring filter costs
Side-by-side evidence
15 of 15 recorded specification fields shown
| Side by side |  |  |
|---|---|---|
| Buyer rating | 4.6 | 4.6 |
| Price | $124.00 | $229.99 |
| Our score | 7.3/10 | 8.1/10 |
| Ratings count | 63,635 ratings | 29,325 ratings |
| Brand | GermGuardian | COWAY |
| Best for | Small bedrooms and personal workspaces | Mid-sized living areas and bedrooms |
| Filtration capability | 8.8/10 | 8.8/10 |
| Effective room sizing | 6.8/10 | — |
| Noise management | 7.0/10 | — |
| Build and controls | 7.2/10 | — |
| Operating economy | 6.5/10 | — |
| Acoustic control | — | 7.9/10 |
| Energy efficiency | — | 7.3/10 |
| Long-term value | — | 8.1/10 |
| Usability | — | 8.4/10 |
| Power Source | Corded Electric | Corded Electric |
| Particle Retention Size | 0.1 micrometer | 0.3 micron |
| Wattage | 55 watts | 77 watts |
| Control Method | Touch | Touch |
| Filter Type | HEPA, Carbon, UV-C | HEPA |
| Floor Area | 743 square_feet | 361 square_feet |
| Noise Level | 55 db | 53.8 db |
| Controller Type | Rotary Dial | Button Control |
| Contaminant Filtration Capability | True | Cigarette Smoke, Dust, Odors, Pet Dander, Pet Hair, Pollen, Volatile Organic Compounds (VOCs), Wildfire Smoke |
| Special Features | H13 Grade Filter, HEPA filter 99.97%, UV-C Light Traps Bacteria, Up to 743 sq. ft. coverage | Air Quality Indicator, Filter Life Indicator, Manual, Smart Mode |
| Software Update Supported to Date | unknown | unknown |
| Filter Class | HEPA | HyperCaptive |
| Model Number | AC4825E | AP-1512HH(W) |
| Brand Name | GermGuardian | Coway |
| Model Name | Not recorded | Airmega AP-1512HH |
| Our verdict | This compact tower relies on true HEPA media, making it capable of capturing 0.3-micron particles rather than relying on loose 'HEPA-type' claims. The narrow form factor fits tight corners, but the modest CADR limits its efficacy to small rooms. Factor annual replacement filter costs into the modest upfront purchase price. | The AP-1512HH remains a benchmark for mid-sized rooms, balancing effective True HEPA filtration with a compact frame. Factor in the recurring cost of filter replacements, as the long-term expense will eventually surpass the initial unit cost. |
| Pros and cons |
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Prices and buyer ratings are captured snapshots. A dash means the detail was not recorded, not that a feature is absent. Editorial scores are research assessments, not laboratory measurements.
Sources and limits
This page summarizes our research reviews of Amazon listings, listed specifications and captured buyer ratings. It is not a hands-on test. Scores are editorial assessments, not measured performance; prices are recorded snapshots and may change. A category can include both main products and accessories, so its overall price range is not the cost of a complete setup.
Most recent product record update: October 18, 2026. Individual records may be older; this is not a verification date for every claim. Prices on this page were read from the listings Nov 8, 2026 – Nov 13, 2026.
- Amazon listing: GermGuardian HEPA Air Purifier Tower - 22" - Gray
- Amazon listing: COWAY Air Purifier for Home Up to 1,748ft², HEPA
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