---
kind: "section"
citation: "10 C.F.R. § 431.86"
title: "10"
number: "431.86"
heading: "Uniform test method for the measurement of energy efficiency of commercial packaged boilers."
url: "https://uscodex.org/cfr/10/431.86"
---

# §431.86. Uniform test method for the measurement of energy efficiency of commercial packaged boilers.

- (a) **Scope.** This section provides test procedures, pursuant to the Energy Policy and Conservation Act (EPCA), as amended, which must be followed for measuring the combustion efficiency and/or thermal efficiency of a gas- or oil-fired commercial packaged boiler.
- (b) **Testing and Calculations.** Determine the thermal efficiency or combustion efficiency of commercial packaged boilers by conducting the appropriate test procedure(s) indicated in Table 1 of this section.
- (c) **Field Tests.** The field test provisions of appendix A may be used only to test a unit of commercial packaged boiler with rated input greater than 5,000,000 Btu/h.

## Notes

### Amendments

[81 FR 89305, Dec. 9, 2016]

### Source

Source: 69 FR 61960, Oct. 21, 2004, 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

[81 FR 89305, Dec. 9, 2016]