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Prepare Work Area and Remove Old Faucet — Disconnect the Water Supply Lines

Beginner3 hours

Part of project

How to Replace a Bathroom Sink Faucet: A Step-by-Step DIY Guide · Step 2 of 6

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In this video

Go under the sink and turn off the hot and cold water shut-off valves completely. Place a bucket underneath to catch any draining water. Use an adjustable wrench to disconnect the water supply lines from the old faucet. Once the lines are disconnected, unscrew the mounting nuts holding the old faucet in place and lift it out from the top of the counter.

Goal: Remove the existing faucet from the sink

Used in this video

  • Bucket (Material: Plastic)Catching residual water from disconnected lines.
  • Adjustable Wrench (Tool Type: Hand Tools, Adjustable Wrench: 8-inch)Loosening the nuts on the old water supply lines.
14.2K views8420 minutes
Ethan Chlebowski

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FAQs

Do I really need a basin wrench for this project, or can I just use an adjustable wrench?

While an adjustable wrench can sometimes work for easily accessible nuts, a basin wrench (like the Husky Basin Wrench 16PL0127 mentioned) is highly recommended. It's specifically designed to reach and loosen mounting nuts in tight, awkward spaces under the sink, making the removal of the old faucet much easier and less frustrating, especially for beginners.

What's the most crucial step to prevent water damage during the faucet replacement?

Absolutely ensure both the hot and cold water supply lines are completely turned off at the angle stops beneath the sink before you begin any work. Test by briefly turning on the old faucet to confirm the water flow has stopped. Keep the Unger 6 Gal. Heavy-Duty Plastic Bucket ready to catch any residual water when disconnecting lines.

What should I do if the old faucet's mounting nuts are rusted or impossible to loosen?

For stubborn or rusted nuts, first try applying a penetrating oil like WD-40 or Liquid Wrench and let it sit for 10-15 minutes to help loosen them. If they still won't budge, you may need to carefully use a hacksaw blade or a rotary tool with a cut-off wheel to cut through the nuts, taking extreme caution not to damage the sink or supply lines.

The project lists the difficulty as 'beginner', but an estimated 3 hours seems long. What makes it take that much time?

The 'beginner' difficulty refers to the straightforward nature of the tasks, not necessarily the speed. The 3-hour estimate accounts for potential real-world challenges such as tight working spaces, rusted nuts, properly reading new faucet instructions, and thorough leak testing. Rushing can lead to mistakes, so taking your time to be meticulous is key.

Transcript
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bit of a final twist with a pair of pliers. Next you want to make sure you turn the water valve off. You will also need some type of bucket to catch the water as you disconnect the hose on your old faucet and to flush the new faucet later. Then unscrew and remove the old faucet. And that was all the prep that was needed before I could install the new faucet.

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