True 42: 3 DOE certified models

True 42 has 3 air purifier basic models certified to DOE as of 2026-11-03, rated smoke CADR 25 to 159 cfm. 3 are 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: True 42 2AP2011WTR at 159 cfm.

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

Air purifiers

3 True 42 air purifiers. DOE data as of 2026-11-03.
#	Model	Labels	Smoke CADR, cfm	Room size	PM2.5 CADR	CADR/W	Brands
1	True 422AP2011WTRfiled as PISCES HEALTHCARE 2AP2011WTR	CADR/W 3.9 Sold under 2 brands	159cfm, 246 sq ft	246 sq ft	161	3.9	2
2	True 422AP260MTRfiled as PISCES HEALTHCARE DH-JH021US-B00	CADR/W 7.1 Sold under 2 brands	150cfm, 233 sq ft	233 sq ft	157	7.1	2
3	True 42250MK026TRfiled as PISCES HEALTHCARE 250MK026TR	CADR/W 3.3 Sold under 2 brands	25cfm, 39 sq ft	39 sq ft	26	3.3	2

How efficient are True 42 air purifiers?

Of the 3 True 42 air purifiers, 1 files a higher CADR/W than the class median and 2 fall below it.

True 42 air purifiers against the median CADR/W of their DOE class. DOE data as of 2026-11-03.
DOE class	True 42 models	Above median	Class median	Best True 42
Air purifiers, PM2.5 CADR 150+ cfm (140)	2	1	CADR/W 5.5	2AP260MTR CADR/W 7.1
Air purifiers, PM2.5 CADR 10 to 99 cfm (90)	1	0	CADR/W 3.5	250MK026TR CADR/W 3.3

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

Who makes True 42 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.

True 42 shares 3 units with one other brand, PISCES HEALTHCARE.

True 42 units filed under one DOE basic model with other brands. DOE data as of 2026-11-03.
Basic model	True 42 model	Number belongs to	Brands
DH-JH021US-B00	2AP260MTR	No known prefix	2
DH-JH11W	2AP2011WTR	No known prefix	2
DH-JHK02	250MK026TR	No known prefix	2

How much does a True 42 air purifier cost to run?

DOE's annual energy figures for the 3 True 42 air purifiers that file one run from 41 to 238 kWh a year: about $7.45 to $43.22 a year. The lowest is True 42 250MK026TR (25 cfm, CADR/W 3.3) and the highest True 42 2AP2011WTR (159 cfm, CADR/W 3.9).

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 True 42

Is True 42 a good air purifier brand?: How its 3 air purifiers compare on efficiency with their DOE class is above. 3 of them are 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 True 42 air purifiers rated for?: DOE's effective room size for its 3 rated models is 39 to 246 sq ft, from a certified smoke CADR 25 to 159 cfm. CADR and room size.
Which True 42 air purifier is the most efficient for its size?: True 42 2AP260MTR, at CADR/W 7.1: higher than 116 of the 140 in its DOE class (air purifiers, PM2.5 CADR 150+ cfm). At the other end is True 42 2AP2011WTR, at CADR/W 3.9, higher than 20 of the 140 in its class.
Is True 42 the same as PISCES HEALTHCARE?: For 3 units, yes: both file them under the same DOE basic model (DH-JH021US-B00, DH-JH11W and DH-JHK02). Compare the 2 brands of DH-JH021US-B00. Compare the 2 brands of DH-JH11W. Compare the 2 brands of DH-JHK02.