Upon arrival we had to supply and install n120 Titian tankless water heater. After installing unit we tested for leaked and proper functionality, unit is working as it should. We also noticed kitchen faucet was loose and needed to be tightened. Further inspection faucet is 5 years old and has old plastic tee that looks very brittle, to tighten this fixture can destroy it. We suggested to buy a faucet and have us install. Estimate provided Thank you for calling John The Plumber -Shane