Your fridge door seal could be the key to your increasing energy bills. Every few months you should check your fridge door seal for leaks. If you find leaks, readjust or replace the seal. Also, to maintain the seal, it is essential to clean it regularly to avoid mold built up.          http://www.articlesbase.com/customer-service-articles/all-you-need-to-know-about-a-fridge-door-seals-6711286.html