Walk-in freezer and cooler doors are built to open from the inside, even when locked on the outside, using a release such as a push-button or panic hardware. OSHA exit rules generally require that exits open from inside without keys or tools. Test the release regularly, keep it free of ice, and add a light and alarm.
A walk-in is a room you can be trapped in. In a freezer, being locked in is a serious risk within minutes. The fix is simple hardware and simple habits.
What the rules generally say
OSHA exit route rules in 29 CFR 1910.36 generally require that exits be openable from the inside without keys, tools or special knowledge. Applied to walk-ins, that means an inside release that works even when the outside is latched or padlocked. Local building and fire codes may add requirements, such as an interior light and an audible alarm or a panic device. Confirm the rules for your building with your fire marshal or health inspector, since requirements vary.
How releases work
| Type | How it works |
|---|---|
| Push-button or plunger release | Presses through the door and releases the latch |
| Push-bar or panic hardware | Pushing on a bar retracts the latch |
| Pull-handle inside | Operated by a handle that works the latch |
| Glow-in-the-dark handle or button | Easy to find if the light fails |
Why releases fail
- Ice builds up around the latch and freezes it.
- Springs or linkages corrode or break.
- The door sags and the latch binds.
- Padlocks or hasps are added on the outside, blocking the release.
- The interior light is out, so the release cannot be found.
- Staff are unaware of how the release works.
Test and maintain it
- Test monthly. With someone outside aware, close the door and operate the release from inside.
- Keep it free of ice. Report ice around the latch and fix the cause. See freezer door freezes shut.
- Check the hinges and closer. See hinges and closers.
- Check the heater. See door and frame heaters.
- Never padlock a door with someone possibly inside.
- Train staff, including new hires, on where the release is.
Lights and alarms
- An interior light on its own switch or circuit, with a switch that glows.
- An audible alarm or push-button that signals outside.
- Clear labels showing how to open the door.
- A phone or radio kept outside for quick response.
If someone is trapped
Call emergency services if there is any risk to the person. Try to open the door from outside, keeping the person informed. Do not leave the area. Freezer temperatures can cause hypothermia quickly, and cold rooms also carry other hazards. After the incident, fix the cause and record what happened.
Ask your technician to check the release at every visit. See the door, gasket and hinge repair page and the maintenance checklist.
This page is general information. Rules and guidance change, so confirm details with the agency named above or a qualified professional.
Questions about this topic
Do coolers need an inside release as well?
Yes. Any walk-in you can enter should open from the inside.
Can I padlock the door at night?
Only if you are sure no one is inside and the inside release still works. Ask your inspector.
Who checks the release?
Staff should test it monthly, and a technician can check it at service.