Turn off the water supply valves under the sink
Open the faucet to relieve any remaining pressure
Place a bucket or towel under the sink to catch water
Disconnect the hot and cold supply lines
Remove the old faucet mounting hardware
Lift out the old faucet from the sink
Clean the sink surface around the faucet holes
Install the gasket or putty if required by the new faucet
Insert the new faucet into the mounting holes
Secure the faucet from underneath with the provided hardware
Tighten the mounting nuts evenly
Connect the hot and cold water supply lines to the faucet
Tighten all connections with a wrench, avoiding over-tightening
Turn the water supply valves back on slowly
Check for leaks at all connections
Tighten any leaking fittings if needed
Run the faucet for a few minutes to flush the lines
Confirm proper hot and cold water flow
Reinstall any sink accessories or under-sink items removed earlier