Return to install a properly sized thermal expansion tank, which was a four gallon. Started by turning the water off and unplugging the recirculation pump. I then drained down all the freshwater lines within the home.By turning on all of the fixtures. I then uninstalled the two gallon thermal expansion tank and piped in a new four gallon.Thermal expansion tank that is properly supported by a bracket. Pressure tested by flushing all of the air out of the lines and checking for leaks and then checking to make sure that no fixtures got clogged in the process. Turn to the water heater power back on and allowed for it to heat up completely. No leaks and no further issues. Thank you for choosing and trusting t e with your plumbing needs.