Skip to main content

Remove Old Faucet — Remove the Faucet's Mounting Nuts

Beginner2 hours

Part of project

Replace Your Bathroom Faucet: Easy Guide · Step 3 of 5

Helpful?

In this video

Locate the retaining nuts on the threaded posts that hold the faucet to the sink. Unscrew these nuts by hand. If they are tight, you may need pliers or a basin wrench to loosen them. Once the nuts are removed, the faucet can be lifted straight up and out from the top of the sink.

Goal: Remove faucet from sink

  • Be aware that the area under the old faucet base is likely to be dirty and may require cleaning.

Used in this video

  • Basin Wrench (Tool Type: Plumbing Tools, Power Source: Manual) · optionalReaching and loosening the retaining nuts in the tight space behind the sink.
9.4K views31210 minutes
This Old House

2.2M subscribers

View Channel

FAQs

The project states 'beginner' and '2 hours'. Is this realistic for someone with no plumbing experience?

Yes, replacing a bathroom faucet is generally beginner-friendly if you follow instructions carefully. The 2-hour estimate is for a smooth installation; seized nuts or tight spaces can extend this, so allocate a bit of extra time. Take your time and don't rush the steps.

Is a basin wrench truly necessary for this project, or can I just use my adjustable wrench?

A basin wrench is highly recommended, as it's designed to reach and grip the often-tight mounting nuts in the confined space under a sink. While an adjustable wrench might work for accessible nuts, the basin wrench significantly simplifies this often frustrating step, especially for older faucets.

What's the most common mistake beginners make that leads to leaks after installing a new faucet?

Not properly tightening the supply line connections is a common cause of leaks. Ensure they are hand-tight, then use a wrench for an additional quarter to half turn, being careful not to overtighten and strip the threads. Always use new supply lines, often included with your new faucet.

What should I do if the old faucet's mounting nuts are corroded or stuck and won't loosen?

First, apply a penetrating oil (like WD-40) to the nuts and let it sit for 15-30 minutes. If they still won't budge, you might need to carefully use a hacksaw or oscillating tool with a metal blade to cut through the nuts or bolts, but exercise extreme caution to avoid damaging the sink or surrounding plumbing.

Transcript
Hide

and keep up with which one of these is hot and which one is cold. Now remove these retaining nuts. You may need pliers to get them started, but they should be only hand tight. Let me warn you now what's under this is not pretty, but that's okay. We're just going to lift off the old faucet and then we'll clean that right up. Now we'll put the faucet in its place.

Auto-generated transcript. May contain errors.