This toilet has been a pain....It has a hidden trap and the first day it was installed the wax ring got bent on one side and the bowl leaked all night long. The next day the man came back out and put a new wax ring and sid the toilet felt like it weighed 500 pounds. He could not see the bolts to get the toilet on straight the frist time. He messed with it most of the day. It leaked a little during the night but I changed the towel that was around it at 6:00 a.m. and checked on it again at 10:00 a.m. and the towel was dry. It has now stopped leaking on the 3rd day. I guess the toilet was so heavy that it continued to seal and finally sealed. The next toilet I get will not have the hidden trap. I do love that it is chair height though.