Turn off the hot and cold water supply valves under the sink
Open the faucet to release any remaining water pressure
Place a bucket or towel under the sink
Disconnect the supply lines from the old faucet
Remove the mounting nuts or bracket holding the old faucet in place
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 through the sink holes
Secure the faucet from underneath with the mounting hardware
Tighten the mounting nuts evenly
Connect the hot and cold supply lines to the new faucet
Reconnect any sprayer or hose attachments
Turn the water supply valves back on
Check for leaks at all connections
Tighten any leaking fittings if needed
Run the faucet to flush out air and debris
Confirm the faucet operates correctly