Xiaomi: 1 DOE certified model

Xiaomi has one air purifier basic model certified to DOE as of 2026-11-03, rated smoke CADR 113 cfm. How its efficiency compares with its DOE class is below.

Source: DOE Compliance Certification Database (air purifiers), data as of 2026-11-03.

Air purifiers

1 Xiaomi air purifier. DOE data as of 2026-11-03.
# Photo Model Labels Smoke CADR, cfm Room sizePM2.5 CADRCADR/W Brands
1
XiaomiAC-M18-SC
  • CADR/W 4.5
 113cfm, 175 sq ft 175 sq ft1154.5 1

How efficient is the Xiaomi AC-M18-SC?

Xiaomi AC-M18-SC files CADR/W 4.5. The median among the 66 models in its DOE class (air purifiers, PM2.5 CADR 100 to 149 cfm) is 4.65, so it's below the median: higher than 30 of the 66.

A higher CADR/W means more clean air per watt.

Who makes Xiaomi air purifiers?

DOE's database has no manufacturer field, so the evidence is whose model number each unit is filed under and which other brands file the same unit.

Its one basic model isn't filed by any other brand as of 2026-11-03, and the model number isn't another company's. DOE's records tie it to Xiaomi alone.

How much does a Xiaomi air purifier cost to run?

For Xiaomi AC-M18-SC, DOE's record lists 150 kWh a year, the annual energy figure from DOE's test. That's about $27.24 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.

How does Xiaomi AC-M18-SC compare with other brands?

Picked by rule from models with a matched listing, DOE data as of 2026-11-03.

  • Within 20 cfm of its size, highest CADR/W: Windmill SAP2V1, 130 cfm. Room size 202 sq ft, CADR/W 6.4: about 30% less power for the same clean air.
  • Nearest size in its class with a higher CADR/W: Dreo DR-HAP008, 115 cfm. Room size 178 sq ft, CADR/W 5.5: about 18% less power for the same clean air.
  • Nearest bigger unit: Honeywell HPA5100B, 134 cfm. Room size 207 sq ft, CADR/W 2.6.

Questions about Xiaomi

Is Xiaomi a good air purifier brand?
Its one air purifier basic model, Xiaomi AC-M18-SC, certifies 113 cfm, and its CADR/W of 4.5 is higher than 30 of the 66 in its DOE class (air purifiers, PM2.5 CADR 100 to 149 cfm). We don't test reliability, noise or build quality, so we can't rank brands on those. How we compare models.
What room size are Xiaomi air purifiers rated for?
DOE's effective room size for Xiaomi AC-M18-SC is 175 sq ft, from a certified smoke CADR 113 cfm. CADR and room size.