LONGSTAREP-KJTS01-140-25W

Air purifier · sold under 2 brands

DOE certified smoke CADR

148cfmDOE test

Dust 159 · PM2.5 154 cfm

Effective room size 229 sq ft (DOE)

DOE data as of 2026-11-03DOE record

Does it fit your room? How DOE sizes rooms

LONGSTAR EP-KJTS01-140-25W: certified to DOE with smoke CADR 148 cfm, dust 159, PM2.5 154, effective room size 229 sq ft. The same unit is also filed as Maxlite AP215SF4B. DOE data as of 2026-11-03.

Every model number on this record

Filed with DOE under basic model EP-KJTS01-140-25W. A listing with any of these numbers is this unit.

Every model number filed under basic model EP-KJTS01-140-25W, DOE data as of 2026-11-03
Model numberFiled by
EP-KJTS01-140-25W (DOE basic model)LONGSTAR
AP215SF4BMaxlite

Same unit, 2 brands

148 cfm under every name. Choose on price, warranty and what's in stock.

Both filed under DOE basic model EP-KJTS01-140-25W. Listing status as of 2026-11-03.

Compare the 2 brands on one page

How much does the LONGSTAR EP-KJTS01-140-25W cost to run?

About $2.18 a month, or $26.15 a year, on DOE's annual energy figure of 144 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 $1.44.

How does the LONGSTAR EP-KJTS01-140-25W 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 6.2 is tied for 18th of the 63, and 24% above their median of 5.

DOE's annual energy figure for it is 144 kWh, against their median of 266 kWh: $22.16 a year less at the US average price.

Air purifiers for 200 sq ft (80 with a listing)

Among 140 air purifiers, PM2.5 CADR 150+ cfm

Smoke CADR (cfm)148

Higher than 5 of 140. 2 others share 148.

143591 cfm

Efficiency (CADR/W)6.2

Higher than 93 of 140. 3 others share 6.2.

313.5

Three to compare with

From models with a matched listing.

  • Within 20 cfm of its size, highest CADR/W

    Blueair 4512311000161 smoke CADR

    Room size 250 sq ft, CADR/W 8.6: about 28% less power for the same clean air.

  • Nearest size in its class with a higher CADR/W

    BOSCH Air 4000156 smoke CADR

    Room size 241 sq ft, CADR/W 7.7: about 19% less power for the same clean air.

  • Nearest bigger unit

    Sharp KC-850U169 smoke CADR

    Room size 262 sq ft, CADR/W 3.7.

DOE record

Air cleaning

Smoke CADR
148 cfm
Dust CADR
159 cfm
PM2.5 CADR
154 cfm
Effective room size
229 sq ft
Efficiency (IEF)
6.2 cfm/W
Energy use
144 kWh/year

Record

DOE basic model
EP-KJTS01-140-25W
DOE class
150 <= PM2.5 Clean Air Delivery Rate
Brands on the filings
2
In DOE's list since
2026-11-02first snapshot we hold
UPC (ENERGY STAR record)
767627090677
ENERGY STAR record
EP-KJTS01-140-25W, AP215SF4Bcertified 2026-06-18

Questions

What room size is it for?
DOE lists an effective room size of 229 sq ft, based on its smoke CADR of 148 cfm: CADR and room size.
How much does the LONGSTAR EP-KJTS01-140-25W cost to run for a year?
About $26.15: DOE's annual figure of 144 kWh at 18.16¢/kWh, the US residential average for August 2026 (EIA).
Who makes the LONGSTAR EP-KJTS01-140-25W?
DOE's database has no manufacturer field, so the record doesn't say. It does show 2 brands filing one basic model, EP-KJTS01-140-25W: LONGSTAR and Maxlite.
Is the LONGSTAR EP-KJTS01-140-25W the same as the Maxlite AP215SF4B?
Yes, by DOE's records. Maxlite files AP215SF4B under the same basic model, EP-KJTS01-140-25W, with the same 148 cfm.