We have been using HSC Humibac Sorbite Filters in both our fridge and freezer. We have noticed considerable improvement in vegetables, fruits and dairy products keeping for longer and the defrost cycles are greatly reduced in the freezer. There is also much less frost build up on the frozen products and we require less maintenance than previously. Use of the HSC Humibac Sorbite Filters has reduced our energy bills and over time these savings have more than paid for the filters. I would recommend the HSC Humibac Sorbite Filters both for increased shelf life and for savings in energy costs.