Scott Bryan
Yes, thermal expansion is a real problem these days. We have tried many ways to solve the problem and found only 2 ways to solve this problem. #1 you can use an expansion tank that requires installing the tank into the water line (requires a plumber) #2 installing a pressure relief ballcock. in the toilet. This is very easy to do and will solve the problem most of the time. The ballcock costs about $35.00. If you need more info go to our web site and email me. Good luck
