---
kind: "section"
citation: "10 C.F.R. § 429.68"
title: "10"
number: "429.68"
heading: "Air cleaners."
url: "https://uscodex.org/cfr/10/429.68"
---

# §429.68. Air cleaners.

- (a) **Sampling plan for selection of units for testing.**
  - (1) The requirements of [§ 429.11](/cfr/10/429.11.md) are applicable to air cleaners; and
  - (2) For each basic mode of air cleaners, a sample of sufficient size shall be randomly selected and tested to ensure that—
    - (i) Any represented value of annual energy consumption or other measure of energy consumption of a basic mode for which consumers would favor lower values shall be greater than or equal to the higher of:
      - (A) **The mean of the sample—** Or,
      - (B) The upper 95 percent confidence limit (UCL) of the true mean divided by 1.10:

        And

    - (ii) Any represented value of the integrated energy factor or other measure of energy consumption of a basic mode for which consumers would favor higher values shall be less than or equal to the high:
      - (A) **The mean of the sample—** Or,
      - (B) The lower 95 percent confidence limit (LCL) of the true mean divided by 0.90:

        And

  - (3) Any represented value of the pollen, smoke, dust, and PM2.5 clean air delivery rate (CADR) of a basic model must be the mean of the CADR for each tested unit of the basic model. Round the mean clean air delivery rate value to the nearest whole number.
  - (4) Any represented value of the effective room size, in square feet, of a basic model must be calculated as the product of 1.55 and the represented smoke CADR value of the basic model as determined in [paragraph (a)(3)](#a-3) of this section. Round the value of the effective room size, in square feet, to the nearest whole number.
  - (5) Round the value of the annual energy consumption, in kWh/year, of a basic model to the nearest whole number.
  - (6) Round the value of the integrated energy factor of a basic model to the nearest 0.1 CADR/W.
- (b) [Reserved]

## Notes

### Amendments

[88 FR 14043, Mar. 6, 2023, as amended at 89 FR 82069, Oct. 9, 2024; 90 FR 43383, Sept. 9, 2025] ]

### Authority

Authority: 42 U.S.C. 6291-6317; 28 U.S.C. 2461 note.

### Source

Source: 76 FR 12451, Mar. 7, 2011, unless otherwise noted.

### Amendments

[88 FR 14043, Mar. 6, 2023, as amended at 89 FR 82069, Oct. 9, 2024; 90 FR 43383, Sept. 9, 2025] ]