Paul Martin on Nostr: From experience, the greatest loss of efficiency with old fridges and freezers is the ...

From experience, the greatest loss of efficiency with old fridges and freezers is the gradual breakdown of the thermal insulation of the "box" itself. This usually shows as a cold spot on one of the outside walls or door, often damp with condensation.

Newer freezers tend to have thicker insulation with a corresponding reduction in usable internal volume.