Replace a Bathroom Faucet
A practical homeowner guide to replacing a standard bathroom sink faucet. Follow the safety checks, confirm the exact part or model, and test your work before considering the repair complete.
Before you start
Look for corrosion, moisture staining, and the condition of nearby shutoff valves before taking anything apart. Photograph the original connection so you can restore the arrangement correctly.
Tools and supplies
- Basin wrench
- bucket
- flashlight
- supply hoses
Tools & Materials for This Project
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Also prepare eye protection, a clean workspace, and any product-specific tools or fittings listed in the installation manual.
Step-by-step: Replacing a standard bathroom sink faucet
Read the entire procedure before starting. Use the product manual and local code requirements where they are more specific.
- Identify the number and spacing of sink mounting holes; check whether the replacement is centerset, widespread or single-hole with an appropriate deck plate.
- Shut off hot and cold stops, open the faucet to relieve pressure, and place a bucket and towels beneath the connections.
- Photograph supply routing, disconnect both supply hoses, and loosen mounting nuts using a basin wrench if needed.
- Lift the old faucet and remove old putty or sealant without scratching the sink surface.
- Install the new faucet gasket or seal exactly as the manufacturer specifies; secure mounting hardware without overtightening.
- Reconnect approved supply lines without kinks; replace damaged hoses rather than reusing them.
- Remove the aerator if recommended, open stops slowly, flush lines, reinstall aerator and check every connection while running hot and cold.
Common mistakes to avoid
- Check hole spacing before buying the faucet.
- Never use plumber’s tape on compression connections unless the manufacturer explicitly directs it.
- A slow leak under a cabinet can damage flooring; check again after several hours.
Helpful video tutorials
Watch a relevant demonstration before starting. Check the model, safety steps and local code requirements for your project.
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DIY or hire a professional?
A plumber should handle inaccessible piping, failed shutoff valves, recurring leaks, or any damaged subfloor. A professional quote should explain labor, materials, disposal, warranty, site conditions and any permits. Compare identical scopes, not just total prices.
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