Open-Air Cooler vs Glass-Door Merchandiser: Access vs Efficiency
Open-Air Cooler vs Glass-Door Merchandiser: Access vs Efficiency
Retail cold merchandising splits into two camps: open-air displays with no door, and glass-door merchandisers. The choice comes down to how much friction you're willing to put between the customer and the product.
Open-air: zero friction, higher energy cost
An open-air cooler uses an invisible air curtain to hold cold air in the case while leaving the front completely open. Customers reach in and grab with no door to open — the lowest-friction retail experience there is, which is why you see it on grab-and-go beverage walls and convenience counters.
The cost is energy: an air curtain runs constantly and loses cold to the room, so open-air is the most expensive display format to operate, and it needs a controlled, draft-free environment to hold temperature.
Glass-door: efficiency, with a small barrier
A glass-door merchandiser puts a door between the customer and the product. It's a small amount of friction, but the energy savings are real — a glass door holds cold far better than an open air curtain, so the compressor cycles less. For anything that isn't a high-velocity grab-and-go item, glass door is the better operating-cost choice.
- Westlake 27" 1-Glass-Door Merchandiser (WKR-23-BG) — 23 cu.ft, R290.
- Westlake 54" 2-Glass-Door Merchandiser (WKR-49-BG) — 49 cu.ft.
The rule of thumb
- High-velocity, single-serving, impulse items (bottled drinks, grab-and-go) → open-air, where zero friction drives volume.
- Anything else — premium product, slower-moving stock, or anything in a warm or drafty space → glass door, for efficiency and temperature stability.
Bottom line
Open-air maximizes impulse by removing friction; glass-door maximizes efficiency by containing cold. Pick based on how fast the product turns, not on how the case looks.
Browse the glass-door refrigerator collection.