Make sure your temperatures are set correctly for your fridge and freezer. Here's what we recommend:
Refrigerator should be set at 35 - 38 degrees.
Freezers in fridge/freezer combos should be set at 5 degrees.
Set stand alone freezers at 0 degrees.
Keep the seal air tight on the doors so that cold air can't escape. Here's an easy way to test your seal:
Place a dollar bill between the seal and the door.
Close the door.
Give the dollar a gentle tug. If there is some resistance, you're seals are in good shape.