# Energy Conservation Program: Test Procedure for Walk-in Coolers and Walk-in Freezers
> **US Department of Energy** · Final rule. · Published 2016-12-28 · Effective 2017-01-27 · 81 FR 95758
## Document
- **Document number:** 2016-29708
- **Category:** energy-efficiency
- **Sub-agency:** US Department of Energy
- **Federal Register citation:** 81 FR 95758
- **CFR reference:** 10 CFR 429
- **Publication date:** 2016-12-28
- **Effective date:** 2017-01-27
- **Energy docket:** Docket No. EERE-2016-BT-TP-0030
## Abstract

This final rule amends the test procedure for certain walk-in cooler and freezer components by improving the procedure's clarity, updating related certification and enforcement provisions to address the performance-based energy conservation standards for walk-in cooler and freezer equipment, and establishing labeling requirements to aid manufacturers in determining compliance with the relevant standards for walk-in cooler and freezer applications. The amendments consist of provisions specific to certain walk-in cooler and freezer refrigeration systems, including product-specific definitions, removal of a performance credit for hot gas defrost, and a method to accommodate refrigeration equipment that use adaptive defrost and on-cycle variable-speed evaporator fan control.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/12/28/2016-29708/energy-conservation-program-test-procedure-for-walk-in-coolers-and-walk-in-freezers)
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