Even though The Hanover is unrated by J.D. Power for claims satisfaction, The Hanover's low ranking with the National Association of Insurance Commissioners indicates that the company has far fewer complaints than the industry average, and The Hanover insurance reviews are generally positive. This suggests that the majority of The Hanover's policyholders are happy with the quality of service they receive. Your own claim satisfaction may depend on the type of policy you have and the complexity of your case.