Walk-In Coolers with Glass Doors for Stores

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A walk-in cooler with glass doors, often just called "the cooler doors", is the cold wall in most liquor stores, convenience stores and markets. Customers open glass doors on the sales floor, and staff restock from inside the walk-in. This page is part of our liquor store refrigeration section.

Planning a glass-door walk-in

• Door count. Count the products you want to face, the shelf positions per door and how much backstock should sit in the box. Door count drives the refrigeration load as much as box size does.
• Box depth behind the doors. Enough room for gravity-feed shelving and a staff aisle to restock.
• Display doors. Walk-in display doors have their own federal efficiency standards (10 CFR 431.306). Door and frame heaters keep the glass clear, and anti-sweat heater controls reduce the energy they use (PG&E).
• Refrigeration sized for traffic. Every door opening lets warm, moist air into the box. A store with steady traffic needs more capacity and more defrost than a back-room cooler of the same size.
• Refrigerant for new systems. New remote condensing units must use a refrigerant with a GWP under 1,400 from July 27, 2026 under federal rules (40 CFR 84.54), and California bans R-404A and R-507A in new remote condensing units (CARB).
• Staff access door and safety. A staff entry door with an inside release that always works.

For installation details, see walk-in cooler installation. If customers will walk inside instead, see beer cave installation.

Common repairs

Kolpak's walk-in manual notes that frost or condensation around the door jamb indicates an inoperable heater or excessive moisture (Kolpak).

For the repair itself, see walk-in cooler repair. For stand-alone units near the register, see glass door merchandiser repair.

Keep the doors working

• Check that every door closes and seals on its own. A door that hangs open warms the whole wall.
• Clean gaskets and look for tears.
• Keep the condenser clean: Heatcraft calls for cleaning condensing unit coils twice a year (Heatcraft).

More: beer cave planning, convenience store refrigeration and refrigeration by industry.

Plan or repair your cooler doors →

Frequently asked questions

Written and reviewed by Jim McKinny, owner of Cool Aid Air Conditioning & Refrigeration — California C-20 and C-38 licensed, EPA Universal certified, second generation of a family business serving the Bay Area since 1966. Every job we complete is backed by our 1-year parts & labor warranty.