# 10 C.F.R. § 431.76 (2026): Uniform test method for the measurement of energy efficiency of commercial warm air furnaces

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_76

## Section

- **Citation:** 10 C.F.R. § 431.76 (2026)
- **Heading:** Uniform test method for the measurement of energy efficiency of commercial warm air furnaces
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Title 10 CFR: Energy / Chapter II: DEPARTMENT OF ENERGY / Part 431: ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT / Subpart D: Commercial Warm Air Furnaces / § 431.76: § 431.76   Uniform test method for the measurement of energy efficiency of commercial warm air furnaces.

## Text

(a)
Scope.
This section prescribes the test requirements used to measure the energy efficiency of commercial warm air furnaces with a rated maximum input of 225,000 Btu per hour or more.
(b)
Testing and calculations
—(1)
Thermal efficiency.
Test in accordance with appendix A to subpart D of this part when making representations of thermal efficiency.
(2)
Thermal efficiency two.
Test in accordance with appendix B to subpart D of this part when making representations of thermal efficiency two.
[88 FR 36234, June 2, 2023]

## Nearby sections

- [10 C.F.R. § 431.71 (2026) § 431.71   Purpose and scope.](https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_71.md)
- [10 C.F.R. § 431.72 (2026) § 431.72   Definitions concerning commercial warm air furnaces.](https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_72.md)
- [10 C.F.R. § 431.75 (2026) § 431.75   Materials incorporated by reference.](https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_75.md)
- [10 C.F.R. § 431.76 (2026) § 431.76   Uniform test method for the measurement of energy efficiency of commercial warm air furnaces.](https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_76.md)
- [10 C.F.R. § 431.77 (2026) § 431.77   Energy conservation standards and their effective dates.](https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_77.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_76. Check the current official text before relying on it. Not legal advice.