This company deserves a ZERO. I had a hot water tank from Reliance that destroyed my basement.
I was out of town for a few days when I arrived home to a flooded basement. The relief valve malfunctioned and water slowly leaked from the tank onto my basement floor.
When I contacted Reliance, they were quick to send out a repair man to fix the tank but would not cover the cost of the damage caused by their product.
After refusing to compensate for the damage, I asked the company to remove the tank. At this point, they tried to make me pay a cancellation fee for breaking a contract they had enacted with the previous owner.
Once I finally spoke with management, they agreed to remove the tank without the cancellation fee.
Always remember that you are not responsible for a contract that was enacted by the previous owner.
I hope this helps.