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How to Replace a Bathroom Faucet

Remove your old bathroom faucet and install a new one

Beginner30-60 minutes$50–$2507 steps3 min read
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What You'll Need

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Tools

Adjustable wrench

For loosening supply line nuts

Amazon

Basin wrench(optional)

For hard-to-reach mounting nuts

Amazon

Plumber's putty or silicone

For sealing the base

Amazon

Bucket

To catch water when disconnecting lines

Amazon

Flashlight

For seeing under the sink

Amazon

Towels

For cleanup

Amazon

Materials

New faucet

$40-$200

Amazon

Supply lines

Often included with faucet, or buy braided stainless

$8-$15 each

Amazon

Plumber's tape (Teflon tape)

$2-$5

Amazon

Step-by-Step Instructions

1

Turn off water supply

2-5 minutes

Locate the shut-off valves under the sink (usually two knobs/handles). Turn them clockwise until they stop. Turn on the faucet to release any remaining water and confirm water is off.

Pro Tip

If valves are stuck, apply penetrating oil and wait 10 minutes before trying again.

Warning

If you can't find shut-off valves or they don't work, you'll need to shut off water at the main.

2

Disconnect supply lines

5-10 minutes

Place a bucket under the supply line connections. Use an adjustable wrench to loosen the nuts connecting the supply lines to the faucet. Water will drip out - this is normal.

Pro Tip

Take a photo of the connections before disconnecting so you can reference it later.

3

Remove the old faucet

10-15 minutes

Look under the sink for the mounting nuts holding the faucet in place. Use a basin wrench or adjustable wrench to remove them. Lift the old faucet straight up and out.

Pro Tip

If the faucet is stuck due to old putty or caulk, gently pry with a putty knife.

4

Clean the sink surface

5 minutes

Remove old putty, caulk, and debris from around the faucet holes. Clean the area thoroughly so the new faucet can seal properly.

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5

Install the new faucet

10-15 minutes

Follow the manufacturer's instructions for your specific faucet. Generally: apply plumber's putty or silicone around the base, insert the faucet through the holes, and tighten the mounting hardware from below.

Pro Tip

Hand-tighten first, then give a quarter turn with a wrench. Over-tightening can crack the sink.

6

Connect supply lines

5-10 minutes

Wrap plumber's tape clockwise around the threaded connections (2-3 wraps). Connect the hot supply line to the hot valve (usually left) and cold to cold (usually right). Hand-tighten, then snug with a wrench.

Warning

Don't over-tighten - this can damage the connections and cause leaks.

7

Turn on water and test

5 minutes

Slowly turn on the shut-off valves. Check all connections for leaks. Run both hot and cold water to flush the lines. Check under the sink again after a few minutes.

Pro Tip

A tiny drip usually means a connection needs to be tightened just a bit more.

Common Mistakes to Avoid

  • Forgetting to turn off water before starting
  • Over-tightening connections, causing cracks or stripped threads
  • Not using plumber's tape on threaded connections
  • Mixing up hot and cold supply lines
  • Not checking for leaks after installation

Safety Warnings

  • Always turn off water supply before starting
  • Have towels and a bucket ready for residual water

When to Call a Professional

If shut-off valves are corroded or won't close, if supply lines show signs of corrosion, or if you notice water damage or mold under the sink.

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Frequently Asked Questions

How difficult is it to replace a bathroom faucet?
This project is rated as beginner difficulty. Most homeowners with basic tools can complete this project. It typically takes 30-60 minutes to complete.
How much does it cost to replace a bathroom faucet?
The estimated cost for materials is $50–$250. This doesn't include tools you may need to purchase. Many of the tools required are common household items you may already own.
What tools do I need to replace a bathroom faucet?
You'll need: Adjustable wrench, Plumber's putty or silicone, Bucket, Flashlight, Towels. Optional tools that can make the job easier include: Basin wrench.
How long does it take to replace a bathroom faucet?
This project typically takes 30-60 minutes. The actual time depends on your experience level, the specific conditions of your home, and whether you encounter any complications. It's broken into 7 steps for easy tracking.
What are common mistakes when trying to replace a bathroom faucet?
The most common mistakes include: Forgetting to turn off water before starting. Over-tightening connections, causing cracks or stripped threads. Not using plumber's tape on threaded connections. Following our step-by-step guide will help you avoid these issues.
Should I hire a professional to replace a bathroom faucet?
If shut-off valves are corroded or won't close, if supply lines show signs of corrosion, or if you notice water damage or mold under the sink.
How much does a plumber charge to replace a bathroom faucet?
A plumber typically charges $150–$350 to replace a bathroom faucet, including labor. The faucet itself costs $50–$250 depending on the brand and style. By doing it yourself, you save the entire labor cost — and the job only takes 30–60 minutes with basic tools.
Is it worth replacing a bathroom faucet yourself or hiring a plumber?
For most homeowners, replacing a bathroom faucet is one of the easiest plumbing jobs to DIY. If your supply lines are accessible and not corroded, you can do it in under an hour and save $150+ in labor costs. Consider hiring a plumber if you find corroded pipes, need to modify supply lines, or aren't comfortable working under a sink.
Can I replace a bathroom faucet without plumbing experience?
Yes — this is one of the most beginner-friendly plumbing projects. No soldering or pipe cutting is required. You're simply disconnecting supply lines, removing the old faucet, and connecting the new one. Most modern faucets come with clear instructions and quick-connect fittings.

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Project Overview

Difficulty
Beginner
Time
30-60 minutes
Est. Cost
$50–$250
Tools
6 items
Materials
3 items
Steps
7
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