What is the best way to carry a refrigerator to a new location in the house?

If it is remaining on the same floor you could get a bath mat or similar item, turn it upside down so the fuzzy side is on the floor and then move the refrigerator onto the rug and slide it to where you want it . If it is going on a different floor you could rent an appliance handcart which has a strap built in that will help keep the refrigerator in place. Get a friend or two to help you move it.