Fridge is fine for a few years. The issue with the freezer is the thaw cycle. The temperature shifts are what do in the compounds. I have a freezer sitting at -26 right now (remote monitored with redundancy) with a lifetime supply of my favorites in it.
Does anyone do long term storage in the freezer under a vacuum? In another life I worked with materials that were heat and moisture sensitive and it was part of a protocol for storage.
