Abstract: An apparatus that increases energy efficiency by insulating a refrigerator or freezer wall is disclosed. The apparatus includes an inner wall made of stainless steel or aluminum and an exterior wall. A backing sheet with a series of cells is attached to the inner wall. The cells are filled with a gel that is formed by combining a super-absorbent cross-linked sodium polymer with water. The gel is has a ratio of 3 ounces of polymer to every 4 gallons of water. Finally, a layer of insulating foam interposed between the cells and the outer wall.