One unit, 2 brandsP297WH
SUMASHI MW-PA16 = Meowant P297WH · Air purifier filed by Meowant and 1 other brand
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Meowant - SUMASHI
DOE certified smoke CADR, every brand
145cfmDOE test
Dust 153 · PM2.5 149 cfm
145 cfm under every nameChoose on price, warranty and what's in stock.
DOE data as of 2026-11-03DOE record
MW-PA16 (Meowant and SUMASHI): all filed with DOE under one basic model, P297WH, certified at 145 cfm. DOE data as of 2026-11-03.
Sold as
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MW-
PA16, P297, P297H, P297W, P297WH 145 cfm
Check price on Amazon -
MW-
PA16, P297, P297H, P297W, P297WH 145 cfm
No Amazon listing matched as of 2026-11-03.
The filings
DOE lists 5 individual model numbers under basic model P297WH, filed under 2 brand names. Every filing lists the same figures: smoke CADR 145 cfm, PM2.5 CADR 149 cfm and a 224 sq ft room size.
| Brand | Model numbers | Smoke CADR | CADR/W | Room size, sq ft | Listing |
|---|---|---|---|---|---|
| Meowant | MW- | 145 | 3.3 | 224 | Check price on Amazon |
| SUMASHI | MW- | 145 | 3.3 | 224 | None matched |
How we know it's one unit
Every brand here filed its model numbers under the same DOE basic model, P297WH. DOE's definition of a basic model (10 CFR 430.2) covers "all units of a given type of covered product (or class thereof) manufactured by one manufacturer" with "the same primary energy source" and nearly identical "electrical, physical, and functional (or hydraulic) characteristics that affect energy consumption, energy efficiency, water consumption, or water efficiency." So one set of DOE figures covers every name on the list. Both brands file P297WH itself as their model number, so the number alone doesn't say which of them builds it.
Brands may still differ in color, controls, accessories, warranty and support. Full record and every model number: Meowant P297WH.
How much does the P297WH cost to run?
DOE's record lists 310 kWh a year, the annual energy figure from DOE's test. That's about $56.30 a year.
At 18.16¢ per kWh, the US average residential price for August 2026 (EIA Electric Power Monthly, table 5.6.A). Worked out from the certified figures.
Among 66 air purifiers, PM2.5 CADR 100 to 149 cfm
Smoke CADR (cfm)145
At the class maximum, with 1 other.
93145 cfm
Efficiency (CADR/W)3.3
Higher than 12 of 66. 3 others share 3.3.
2.49.1
Who makes the P297WH, and is it the same under every brand?
- Who makes the SUMASHI MW-PA16?
- DOE's records don't say. The SUMASHI MW-PA16 is filed under basic model P297WH along with the Meowant MW-PA16. Both brands file that same number as their model, and DOE's database has no manufacturer field.
- Is the SUMASHI MW-PA16 the same as the Meowant MW-PA16?
- Yes, by DOE's records. Both are filed under basic model P297WH and list the same certified figures: smoke CADR 145 cfm, PM2.5 CADR 149 cfm and a 224 sq ft room size.
- Which brand of P297WH is cheapest to run?
- They tie: every brand files smoke CADR 145 cfm, PM2.5 CADR 149 cfm and a 224 sq ft room size, so each costs about $56.30 a year to run.
Related units, shared brands
More: all units sold under several brands · all air purifiers