Customer wishes to have electric water heater installed under bathroom sink for hot water. Installed point of use electric water heater and connected to existing faucet. Tested system and everything was working properly. Removed existing toilet flange and mounted new flange to concrete floor and installed existing toilet. After testing everything we noticed the fill valve on toilet wasn’t working properly and needs to be replaced Inspected men’s bathroom faucet and saw hot side was not shutting off. Adjusted timer on faucet and everything was working properly. If customer continues to have issues with facuet then I recommend replacement of not cartridge