---
kind: "section"
citation: "10 C.F.R. § 431.246"
title: "10"
number: "431.246"
heading: "Energy conservation standards and their effective dates."
url: "https://uscodex.org/cfr/10/431.246"
---

# §431.246. Energy conservation standards and their effective dates.


A unit heater manufactured on or after August 8, 2008, shall:

- (a) Be equipped with an intermittent ignition device; and
- (b) **Have power venting or an automatic flue damper.** An automatic vent damper is an acceptable alternative to an automatic flue damper for those unit heaters where combustion air is drawn from the conditioned space.

## Notes

### Amendments

[70 FR 60418, Oct. 18, 2005, as amended at 71 FR 71374, Dec. 8, 2006]

### Source

Source: 70 FR 60418, Oct. 18, 2005, unless otherwise noted.

### Authority

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

### Source

Source: 64 FR 54141, Oct. 5, 1999, unless otherwise noted.

### Amendments

[70 FR 60418, Oct. 18, 2005, as amended at 71 FR 71374, Dec. 8, 2006]