The answer to 'how to maintain faucet' is to regularly clean and inspect the faucet to ensure it is functioning properly. This includes removing any mineral buildup, tightening any loose parts, and replacing worn washers or o-rings as needed. Proper maintenance can help extend the life of your faucet and prevent leaks or other issues.
It's generally recommended to clean your faucet every 6 months to 1 year, depending on the level of use and mineral content in your water. You can use a mild soap and water solution or a specialized faucet cleaner to wipe down the exterior. For more thorough maintenance, you may need to disassemble the faucet to access the internal components. If you're not comfortable doing this yourself, it's best to call a professional plumber to service your faucet.