LUFTRUMC3500
Air purifier
DOE certified smoke CADR
243cfmDOE test
Dust 249 · PM2.5 246 cfm
Effective room size 377 sq ft (DOE)
DOE data as of 2026-11-03DOE record
Does it fit your room? How DOE sizes rooms
LUFTRUM C3500: certified to DOE with smoke CADR 243 cfm, dust 249, PM2.5 246, effective room size 377 sq ft. DOE data as of 2026-11-03.
Every model number on this record
Filed with DOE under basic model C3500. A listing with any of these numbers is this unit.
| Model number | Filed by |
|---|---|
| C3500 (DOE basic model) | LUFTRUM |
| C3500i | LUFTRUM |
How much does the LUFTRUM C3500 cost to run?
About $4.25 a month, or $51.03 a year, on DOE's annual energy figure of 281 kWh.
Electricity at 18.16¢/kWh, the US residential average for August 2026 (EIA Electric Power Monthly, table 5.6.A). Each 1¢/kWh you pay above or below 18.16¢ moves the yearly figure by $2.81.
How does the LUFTRUM C3500 rank in its DOE class?
In its DOE class (air purifiers, PM2.5 CADR 150+ cfm), 63 models have a matched Amazon listing. Its CADR/W of 5 is tied for 31st of the 63, and level with their median of 5.
DOE's annual energy figure for it is 281 kWh, against their median of 266 kWh: $2.72 a year more at the US average price.
Air purifiers for 300 sq ft (44 with a listing)Among 140 air purifiers, PM2.5 CADR 150+ cfm
Smoke CADR (cfm)243
Higher than 71 of 140. 1 other shares 243.
143591 cfm
Efficiency (CADR/W)5
Higher than 59 of 140. 2 others share 5.
313.5
Three to compare with
From models with a matched listing.
Within 20 cfm of its size, highest CADR/W
DREAME CVF20B224 smoke CADRRoom 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 C610248 smoke CADRRoom size 384 sq ft, CADR/W 6.2: about 19% less power for the same clean air.
Nearest bigger unit
MEDIFY AIR MA-50- 264 smoke CADRV3.0 Room size 409 sq ft, CADR/W 6.3.
DOE record
Air cleaning
- Smoke CADR
- 243 cfm
- Dust CADR
- 249 cfm
- PM2.5 CADR
- 246 cfm
- Effective room size
- 377 sq ft
- Efficiency (IEF)
- 5 cfm/W
- Energy use
- 281 kWh/year
Record
- DOE basic model
- C3500
- DOE class
- 150 <= PM2.5 Clean Air Delivery Rate
- Brands on the filings
- 1
- In DOE's list since
- 2026-11-02first snapshot we hold
Questions
- What room size is it for?
- DOE lists an effective room size of 377 sq ft, based on its smoke CADR of 243 cfm: CADR and room size.
- How much does the LUFTRUM C3500 cost to run for a year?
- About $51.03: DOE's annual figure of 281 kWh at 18.16¢/kWh, the US residential average for August 2026 (EIA).