One unit, 11 brandsOL20D-D029B

COWSAR D4229B = Auseo OL20D-D029B · Dehumidifier filed by Auseo and 10 other brands

+11 brands, no listing

DOE certified water removal, every brand

14.43pints/day2019 DOE test

IEF 1.32 L/kWh

14.43 pints/day under every nameChoose on price, warranty and what's in stock.

DOE data as of 2026-11-03DOE record

D4229B (Auseo, COWSAR, Crzoe, Electactic, FREE VILLAGE, Havato and 5 more brands): all filed with DOE under one basic model, OL20D-D029B, certified at 14.43 pints/day (2019 DOE test). DOE data as of 2026-11-03.

Sold as

Filed as D4229B by 11 brands, no Amazon listing matched as of 2026-11-03:

Show all 11 brands

The filings

DOE lists one individual model number, D4229B, under basic model OL20D-D029B, filed under 11 brand names. Every filing lists the same figures: 14.43 pints/day and IEF 1.32.

Each brand's DOE filing under basic model OL20D-D029B, DOE data as of 2026-11-03. Identical columns are the evidence.
Brand	Model numbers	Pints/day	IEF	Listing
Auseo	D4229B	14.43	1.32	None matched
COWSAR	D4229B	14.43	1.32	None matched
Crzoe	D4229B	14.43	1.32	None matched
Electactic	D4229B	14.43	1.32	None matched
FREE VILLAGE	D4229B	14.43	1.32	None matched
Havato	D4229B	14.43	1.32	None matched
KISSAIR	D4229B	14.43	1.32	None matched
KNDKO	D4229B	14.43	1.32	None matched
LHRIVER	D4229B	14.43	1.32	None matched
Moifoi	D4229B	14.43	1.32	None matched
ZAFRO	D4229B	14.43	1.32	None matched

How we know it's one unit

Every brand here filed its model numbers under the same DOE basic model, OL20D-D029B. 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. No brand files OL20D-D029B itself as a model number. It's the code DOE uses to tie their filings together.

Brands may still differ in color, controls, accessories, warranty and support. Full record and every model number: Auseo D4229B.

How much does the OL20D-D029B cost to run?

14.43 pints/day at an IEF of 1.32 L/kWh takes 5.17 kWh a day running nonstop at DOE's test conditions: about 94¢ a day, or $28.18 for 30 days. Real use cycles on and off with the humidity, so that's the upper figure for a day of nonstop running.

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 253 portable dehumidifiers up to 25 pints/day

Not counting 1 flagged filing far outside the class.

Water removal (pints/day)14.43

Higher than 105 of 253.

median 16

4.9524.99 pints/day

Efficiency (IEF, L/kWh)1.32

Higher than 64 of 253. 4 others share 1.32.

median 1.7

1.32.05

Who makes the OL20D-D029B, and is it the same under every brand?

Who makes the COWSAR D4229B?: DOE's records don't say. The COWSAR D4229B is filed under basic model OL20D-D029B along with 10 other brands. No brand files OL20D-D029B itself as a model number, and DOE's database has no manufacturer field.
Is the COWSAR D4229B the same as the Auseo D4229B?: Yes, by DOE's records. Both are filed under basic model OL20D-D029B and list the same certified figures: 14.43 pints/day and IEF 1.32.
Which brand of OL20D-D029B is cheapest to run?: They tie: every brand files 14.43 pints/day and IEF 1.32, so each costs about 94¢ a day to run nonstop at DOE's test conditions.

Related units, shared brands

More: all units sold under several brands · all dehumidifiers