Customer had a toilet (in the hallway) that was clogged, but customer was able to plunge to clear the stoppage. No further attention needed at this time. The piping beneath that bathroom is pvc. Customer had concerns over a loose trip lever in hall toilet. Found the nut was unthreaded in the bottom of the tank. Retightened the nut to keep it in place. Toilet is working properly. Noted to customer a failed thermal expansion tank that was unstrapped on Cpvc. Informed customer this is dangerous since it can cause the pipe to break. Replaced the thermal expansion tank, strapped it properly, and tested work to ensure proper function and no leaks. Customer has a Kohler toilet in the primary bedroom that is running. Replaced the red Kohler ring as a courtesy in conjunction with the other work so that water wasn’t running in the middle of the night anymore. Left customer a quote for a full rebuild or replacement of the hall bath.