Dreo 338 Air Purifier
#1 in Small roomsFull review
A cheap, certified bedroom purifier with auto mode for rooms under about 180 sq ft.
Amazon $59.98$59.98
The Dreo 338 Air Purifier is the better air purifier overall, rated 3.5 to 3.4. The Dreo 338 Air Purifier leads on value. The Dreo 338 Air Purifier costs $90.01 less ($59.98 vs $149.99).
IKEA STARKVIND Air Purifier
#5 in Small roomsFull review
A good-looking small-room purifier with cheap filters, best for IKEA smart-home users.
IKEA $149.99$149.99
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Dreo 338 Air Purifier for value ($0.52 per cfm of smoke CADR vs $1.22 per cfm of smoke CADR).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every small rooms air purifier; a clear win is highlighted. How we rank explains each one.
| Factor weight | Dreo 338 Air Purifier | IKEA STARKVIND Air Purifier |
|---|---|---|
| Overall rating | 3.5/5 | 3.4/5 |
| Value 25% | 99 $0.52 per cfm of smoke CADR | 52 $1.22 per cfm of smoke CADR |
| Filter cost 20% | 50 filter price or life not published (neutral score used) | 56 $50 a year in filters |
| Quiet 20% | 50 noise at top speed not published (neutral score used) | 47 53 dB at top speed (maker rating) |
| Efficiency 15% | 44 5.5 cfm per watt | 50 efficiency not certified (neutral score used) |
| Auto mode 10% | 70 PM2.5 sensor, auto mode | 70 PM2.5 sensor, auto mode |
| Warranty 10% | 0 1-year warranty | 50 warranty not published (neutral score used) |
Specifications
| Dreo 338 Air Purifier | IKEA STARKVIND Air Purifier | |
|---|---|---|
| Performance | ||
| Smoke CADR | 115 cfm | 123 cfm |
| Dust CADR | 121 cfm | 126 cfm |
| Pollen CADR | 131 cfm | 135 cfm |
| PM2.5 CADR | 118 cfm | - |
| CADR certified by | AHAM Verifide | AHAM Verifide |
| Room size (AHAM) | 178 sq ft | 190 sq ft |
| Coverage (maker) | 856 sq ft | - |
| Noise | - | 24 to 53 dB |
| Efficiency | ||
| Efficiency (IEF) | 5.5 cfm/W | - |
| ENERGY STAR | Yes | No |
| Energy use | 125 kWh/year | - |
| Power at top speed | - | 33 W |
| Filters | ||
| Filter | 3-in-1 filter with carbon layer (HEPA-grade only in sleep mode per Dreo) | EPA12 particle filter; optional gas (carbon) filter sold separately |
| Activated carbon | Yes | No |
| Replacement | DR-HPA032 | STARKVIND particle filter (304.619.43) |
| Replacement cost | $22.98 | $25 every 6 months |
| Yearly filter cost | - | $50/year |
| Ionizer | No | No |
| CARB certified (ozone) | Yes | Yes |
| Controls and build | ||
| Air-quality sensor | PM2.5 | PM2.5 |
| Auto mode | Yes | Yes |
| Wi-Fi app | No | No |
| Fan speeds | 4 | 5 |
| Dimensions | 14.21 x 9.21 x 9.21 in | 21 x 20 x 7 in |
| Weight | 5.6 lb | 13 lb |
| Warranty | 1 years | - |