When I married my DH 31 years ago, he told me that we needed a new refer, although my old one worked. He had measured and said the utility savings would more than pay for it. I thought he was being peculiar, but he was right. Our power bill went down about $50 a month. My very expensive super low power refer we bought 11 years ago died after 6 years. The much cheaper replacement uses almost as little power. There is a lot of variation on this, but DH (AC tech) says keeping the coils etc clean helps motor life up.