Pureborne: 3 DOE certified models

Pureborne has 3 air purifier basic models certified to DOE as of 2026-11-03, rated smoke CADR 19 to 222 cfm. One is the same unit as models filed under other brands. How their efficiency compares with their DOE class is below.

Highest certified smoke CADR among its air purifiers: Pureborne PB6866 and Pureborne PB6866-WF tie at 222 cfm.

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

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Air purifiers

3 Pureborne air purifiers, listed models first. DOE data as of 2026-11-03.
#	Model	Labels	Smoke CADR, cfm	Room size	PM2.5 CADR	CADR/W	Brands	Amazon
1	PurebornePB6866	CADR/W 6	222cfm, 344 sq ft	344 sq ft	228	6	1	Check price on Amazon
2	PureborneET2588filed as CHIVALZ MR2588	CADR/W 3.5 Sold under 4 brands	19cfm, 29 sq ft	29 sq ft	22	3.5	4	Check price on Amazon
3	PurebornePB6866-WF	CADR/W 6	222cfm, 344 sq ft	344 sq ft	228	6	1

How efficient are Pureborne air purifiers?

Of the 3 Pureborne air purifiers, 2 file a higher CADR/W than the class median and 1 matches it.

Pureborne air purifiers against the median CADR/W of their DOE class. DOE data as of 2026-11-03.
DOE class	Pureborne models	Above median	Class median	Best Pureborne
Air purifiers, PM2.5 CADR 150+ cfm (140)	2	2	CADR/W 5.5	PB6866 CADR/W 6
Air purifiers, PM2.5 CADR 10 to 99 cfm (90)	1	0	CADR/W 3.5	ET2588 CADR/W 3.5

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

Who makes Pureborne 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.

Pureborne shares one unit with 3 other brands. Its other 2 basic models are filed by Pureborne alone. The other brands:

Pureborne units filed under one DOE basic model with other brands. DOE data as of 2026-11-03.
Basic model	Pureborne model	Number belongs to	Brands
MR2588	ET2588	No known prefix	4

How much does a Pureborne air purifier cost to run?

DOE's annual energy figures for the 3 Pureborne air purifiers that file one run from 34 to 221 kWh a year: about $6.17 to $40.13 a year. The lowest is Pureborne ET2588 (19 cfm, CADR/W 3.5) and the highest Pureborne PB6866 (222 cfm, CADR/W 6).

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.

Questions about Pureborne

Is Pureborne a good air purifier brand?: How its 3 air purifiers compare on efficiency with their DOE class is above. One of them is the same unit as another brand's model. 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 Pureborne air purifiers rated for?: DOE's effective room size for its 3 rated models is 29 to 344 sq ft, from a certified smoke CADR 19 to 222 cfm. CADR and room size.
Which Pureborne air purifier is the most efficient for its size?: Pureborne PB6866 and Pureborne PB6866-WF tie at CADR/W 6: higher than 84 of the 140 in its DOE class (air purifiers, PM2.5 CADR 150+ cfm). At the other end is Pureborne ET2588, at CADR/W 3.5, higher than 44 of the 90 in its class.
Is Pureborne the same as CHIVALZ?: For one unit, yes: both file it under the same DOE basic model (MR2588). The other 2 Pureborne basic models aren't filed by CHIVALZ. Compare the 4 brands of MR2588.