LUFTRUM: 2 DOE certified models
LUFTRUM has 2 air purifier basic models certified to DOE as of 2026-11-03, rated smoke CADR 243 cfm. How their efficiency compares with their DOE class is below.
Source: DOE Compliance Certification Database (air purifiers), data as of 2026-11-03.
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Air purifiers
| # | Photo | Model | Labels | Smoke CADR, cfm | Room size | PM2.5 CADR | CADR/W | Brands | Amazon |
|---|---|---|---|---|---|---|---|---|---|
| 1 |  | LUFTRUMC3500 |
| 243cfm, 377 sq ft | 377 sq ft | 246 | 5 | 1 | Check price on Amazon |
| 2 | LUFTRUMC3500 |
| 243cfm, 377 sq ft | 377 sq ft | 246 | 5 | 1 |
How efficient are LUFTRUM air purifiers?
Of the 2 LUFTRUM air purifiers, none files a higher CADR/W than the class median: 2 fall below it.
| DOE class | LUFTRUM models | Above median | Class median | Best LUFTRUM |
|---|---|---|---|---|
| Air purifiers, PM2.5 CADR 150+ cfm (140) | 2 | 0 | CADR/W 5.5 | C3500 CADR/W 5 |
A higher CADR/W means more clean air per watt.
Who makes LUFTRUM 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.
None of the 2 LUFTRUM basic models is filed by another brand as of 2026-11-03, and none uses another company's model number. DOE's records tie them to LUFTRUM alone.
How much does a LUFTRUM air purifier cost to run?
DOE's annual energy figures for the 2 LUFTRUM air purifiers that file one run from 281 to 281 kWh a year: about $51.03 to $51.03 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 LUFTRUM C3500 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: DREAME CVF20B, 224 cfm. Room size 347 sq ft, CADR/W 8.8: about 43% less power for the same clean air.
- Nearest size in its class with a higher CADR/W: Winix C610, 248 cfm. Room size 384 sq ft, CADR/W 6.2: about 19% less power for the same clean air.
- Nearest bigger unit: MEDIFY AIR MA-50-V3.0, 264 cfm. Room size 409 sq ft, CADR/W 6.3.
Questions about LUFTRUM
- Is LUFTRUM a good air purifier brand?
- How its 2 air purifiers compare on efficiency with their DOE class is above. Both are filed under LUFTRUM alone. 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 LUFTRUM air purifiers rated for?
- DOE's effective room size for its 2 rated models is 377 sq ft, from a certified smoke CADR 243 cfm. CADR and room size.
- Which LUFTRUM air purifier is the most efficient for its size?
- LUFTRUM C3500 and LUFTRUM C3500 tie at CADR/W 5: higher than 59 of the 140 in its DOE class (air purifiers, PM2.5 CADR 150+ cfm).