Air purifiers rated 200-400 sq ft
Every AHAM-certified purifier whose tested coverage lands in this range, ranked on smoke CADR — with what each one costs to run continuously, which is how they are actually used.
Data current as of October 23, 2026 · 130 certified units · source AHRI + ENERGY STAR
What it costs to leave running
A purifier only works while it is on, so most people leave it on — and across the 107 units here with a certified wattage that costs anywhere from $30 to $140 a year in electricity at the same tariff, a 5× spread. Median $45. Over five years the gap between the ends is larger than most of these machines cost to buy, and no retailer prints it, because it takes AHAM's certified wattage joined to a power price.
Cheapest to run
Blueair 4542411000 (Blue signature SP1i)
$30 a year · smoke CADR 161 · rated to 250 sq ft
True HEPA
85 of 130
carry a true-HEPA filter. CADR already measures what actually reaches the room, so a high CADR without the HEPA label still cleans — the label is not the performance.
CADR and coverage are AHAM-certified; wattage is AHAM's smoke-mode figure. Annual cost assumes continuous running at $0.1883/kWh, the EIA US average — divide by your own hours if you run it less. Replacement filters are the other running cost and are not in this figure; AHAM does not certify filter price or life, so we do not estimate it.
The 20 highest-Smoke CADR of 130 certified units · 5 with a verified place to buy
| Brand & model | Smoke CADR | Coverage | Dust CADR | Watts | Per year | Buy |
|---|---|---|---|---|---|---|
| Honeywell HPA6000W | 257 | 398 sq ft | 262 | 35 W | $58/yr | no listing |
| Honeywell (Canada) HPA6000WC | 257 | 398 sq ft | 262 | 35 W | $58/yr | no listing |
| Honeywell HPA6000B | 257 | 398 sq ft | 262 | 35 W | $58/yr | no listing |
| Honeywell (Canada) HPA6000BC | 257 | 398 sq ft | 262 | 35 W | $58/yr | no listing |
| Winix 5510 | 253 | 392 sq ft | 252 | 65 W | $107/yr | Buy |
| Winix 5530 | 253 | 392 sq ft | 252 | 65 W | $107/yr | Buy |
| Winix 5520 | 253 | 392 sq ft | 252 | 65 W | $107/yr | Buy |
| Blueair 6541511000 | 252 | 391 sq ft | 276 | not published | — | no listing |
| Blueair 6551511000 | 252 | 391 sq ft | 276 | not published | — | no listing |
| LEVOIT LAP-V201S | 250 | 388 sq ft | 254 | 52 W | $86/yr | no listing |
| LEVOIT LAP-V201S-WUS (Vital 200S-P) | 250 | 388 sq ft | 254 | 52 W | $86/yr | Buy |
| LEVOIT LAP-V201S-WCA (Vital 200S-P) | 250 | 388 sq ft | 254 | 52 W | $86/yr | no listing |
| LEVOIT LAP-V201S-KUS (Vital 200S-P) | 250 | 388 sq ft | 254 | 52 W | $86/yr | no listing |
| LEVOIT LAP-V201S-AUSR (Vital 200S-P) | 250 | 388 sq ft | 254 | 52 W | $86/yr | no listing |
| Winix C710 | 248 | 384 sq ft | 252 | 45 W | $74/yr | no listing |
| Winix C610 | 248 | 384 sq ft | 252 | 45 W | $74/yr | Buy |
| Blueair 3431101000 (Blue Pure 311 Auto) | 244 | 378 sq ft | 249 | 33 W | $54/yr | no listing |
| Insigna NS-APMWH2-C | 242 | 375 sq ft | 235 | 41 W | $68/yr | no listing |
| Winix 5500-2 | 239 | 370 sq ft | 244 | 58 W | $95/yr | no listing |
| Winix 5300-2 | 239 | 370 sq ft | 244 | 58 W | $95/yr | no listing |
Showing the top 20 by Smoke CADR. All 130 certified units in this group are filterable in the full product list — we rank here rather than dump, because a table nobody can read is not a resource.
Capacity and efficiency are AHRI-certified values; $/MMBtu is computed by us from EIA energy prices — see methodology. Heat at 5°F is the number that decides whether a heat pump keeps up in real cold, and most listings omit it.