Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
---
title: Commercial Refrigeration Equipment
…166 unchanged lines
## Refrigerant shall be a non-ozone-depleting blend approved under the EPA SNAP program for the equipment's end use and shall comply with the AIM Act HFC phasedown schedule in effect at the time of manufacture.
+```datasheet
+label: Global warming potential (GWP) limit
+type: range
+unit: GWP
+min: 100
+max: 1500
+step: 50
+default: 750
+```
+
## R-404A and R-407C shall not be furnished in new remote refrigeration systems for retail food or cold-storage applications.
## Each refrigerant shall be classified per ASHRAE 34, and the refrigerant charge shall comply with the charge limits and refrigerant concentration limit (RCL) of ASHRAE 15-2022 for the served occupancy.
−## Where an A2L refrigerant is furnished, the equipment shall comply with the A2L provisions of ASHRAE 15-2022 addendum q and UL 60335-2-89, including any required leak detection and mitigation.
−
−## A2L equipment shall not be furnished until the Authority Having Jurisdiction has adopted the mechanical code edition referencing ASHRAE 15-2022; some jurisdictions lag on A2L adoption and will reject the submittal. {note}
−
```datasheet
label: Refrigerant class acceptance
…6 unchanged lines
```
−```datasheet
−label: Global warming potential (GWP) limit
−type: range
−unit: GWP
−min: 100
−max: 1500
−step: 50
−default: 750
−```
+## Where an A2L refrigerant is furnished, the equipment shall comply with the A2L provisions of ASHRAE 15-2022 addendum q and UL 60335-2-89, including any required leak detection and mitigation.
+## A2L equipment shall not be furnished until the Authority Having Jurisdiction has adopted the mechanical code edition referencing ASHRAE 15-2022; some jurisdictions lag on A2L adoption and will reject the submittal. {note}
+
# Energy Efficiency {toc}
## Federal minimum efficiency for walk-in coolers and freezers is set by the Annual Walk-in Energy Factor (AWEF) under 10 CFR Part 431, Subpart R. DOE amended these standards in December 2024, with refrigeration-system compliance required by December 31, 2028 and door-standard compliance required by December 23, 2027. AWEF minimums vary by equipment class. {note}
−## Manufacturers may offer legacy inventory that does not meet the amended efficiency classes; AWEF compliance must be confirmed at the submittal stage against the class-specific thresholds in 10 CFR Part 431, Subpart R, not assumed. {note}
+## Manufacturers may offer legacy inventory that does not meet the amended efficiency classes; AWEF compliance must be confirmed at the submittal stage against the class-specific thresholds in 10 CFR Part 431, Subpart R, not assumed.
## Each walk-in refrigeration system shall meet or exceed the AWEF minimum for its equipment class under 10 CFR Part 431, Subpart R in effect at the time of procurement.
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## Walk-in coolers shall maintain an interior temperature within the specified setpoint band; NSF/ANSI 7 limits food-safety cooler temperature to a maximum of +40°F. {note}
−## Walk-in freezers shall maintain the specified frozen-storage temperature; general frozen food is held near −10°F, while ice cream and hard-freeze product require −20°F. {note}
+## Walk-in freezers shall maintain the specified frozen-storage temperature; general frozen food is held near −10°F, while ice cream and hard-freeze product require −20°F.
## The maintained interior cooler temperature shall not exceed +40°F for any food-storage application.
…5 unchanged lines
## Condensing-unit capacity selected on the cooler-interior load alone, without adding door-infiltration, lighting, and product pull-down loads, is a recurring RFI and short-cycling source; the full design load is the basis of selection. {note}
−## Self-contained reach-in units shall be rated for the ambient temperature at their installed location; most are rated only for 75°F to 95°F ambient, which commercial kitchens routinely exceed without supplemental cooling. {note}
+## Self-contained reach-in units shall be rated for the ambient temperature at their installed location; most are rated only for 75°F to 95°F ambient, which commercial kitchens routinely exceed without supplemental cooling.
```datasheet
…160 unchanged lines
```
−## The walk-in footprint and product load shall be coordinated with the structural slab; loaded prefabricated units can exceed 300 psf, and slab capacity must be verified before equipment selection. {note}
+## The walk-in footprint and product load shall be coordinated with the structural slab; loaded prefabricated units can exceed 300 psf, and slab capacity must be verified before equipment selection.
## Walk-in unit weight and imposed floor loading shall be coordinated with the Structural Engineer of Record, and the supporting slab shall be confirmed adequate before the unit is ordered.
…273 unchanged lines
- Filter-drier cores
```