What Glass Door Condensation Means
Liebherr designs against condensation on these cabinets in three separate ways: a hot-gas frame heater around the glass on the chest models, recessed door seals, and glazing with low heat permeability. When a display case starts fogging, one of those three has usually stopped doing its job — or the room has changed rather than the cabinet.
Common Causes of Glass Door Condensation
- Room humidity rising above what the installation can cope with
- The frame heating no longer warming the glass surround on a chest or lidded model
- A door seal that has flattened, letting cold air onto the outer face of the glass
- A door propped or held open during busy trade, so the glass never dries
🔧 One Safe Check You Can Try
Before suspecting the appliance, look at what changed around it. Liebherr names high humidity as the condition the frame heater exists to handle, so a case that fogs only in summer, only after the floor is mopped, or only when a door nearby is propped open is reacting to the room. Wipe the glass and see whether it returns under the same conditions.
⚠ Why You Shouldn't Go Further Than That
- A permanently fogged case is a commercial problem before it is a mechanical one — the stock cannot be seen, which is the entire point of a display cabinet.
- Telling a heater problem from a humidity problem means checking the glass surround temperature while the cabinet runs, which is not something you can judge by hand through a wet pane.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.