The cold-store door is an energy asset, not a hole in the wall

Ask a cold-store operator where energy goes and most will point at the refrigeration plant. But the plant is sized for a load, and the largest variable part of that load walks — or drives — through the door. Air exchange during door openings dominates energy loss in most cold stores; conduction through the closed leaf is comparatively small.

That reorders door priorities. First is open time: a fast automatic door that opens on approach and closes promptly behind traffic cuts the exchange window from tens of seconds to a few. Second is the closed seal: heated frames and low-temperature gaskets that actually seat at -28 C, because a frosted-open door leaks continuously. Third is band-matched insulation: 80 mm for chillers, 120 mm for freezers, 170 mm for blast duty.

Egis' cold-chain range is specified band by band for exactly this logic — ChillGlide for chillers, FrostGlide for freezers, BlastShield for blast duty, and fast-cycle automatic operation where pallet traffic needs speed at low temperatures. If your cold store's doors are more than a decade old, a survey usually finds the energy case for replacement writes itself.