Replace a Kitchen Faucet
Is your kitchen faucet dripping, outdated, or simply not working as well as it used to? Replacing a kitchen faucet is a surprisingly straightforward DIY project that can dramatically improve the aesthetics and efficiency of your kitchen. Not only will you enjoy a fresh new look, but you'll also prevent potential water damage and reduce water waste from leaks. Many homeowners hesitate to tackle plumbing projects, fearing the cost of specialized tools or the complexity of the task. However, with a clear guide and the right equipment, you can confidently complete this upgrade yourself. The best part? You don't need to buy expensive tools that you might only use once. Our tool lending library makes this project incredibly affordable. Instead of spending hundreds of dollars on wrenches, cutters, and other plumbing essentials, you can borrow everything you need for free or a nominal fee. This means your primary expense will be the new faucet itself, allowing you to invest in a quality fixture without breaking the bank on tools. Get ready to give your kitchen a quick and cost-effective refresh!
constructionTools You'll Need
- check_circleAdjustable WrenchEssential
- check_circleBasin WrenchEssential
- check_circleChannel-lock PliersEssential
- check_circleUtility KnifeEssential
- check_circleBucket or Small PanEssential
- check_circleFlashlight or HeadlampEssential
- check_circleSafety GlassesEssential
- check_circleWire Brush (small)Essential
Project Cost Calculator
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Tools Needed
8 of 8 tools needed
Buy Everything
$252
$177 tools + $75 materials
Rent Tools
$115
$40/day + $75 materials
Borrow From Library
$75
Free tools + $75 materials
You could save
$177
by borrowing tools from a library instead of buying them
inventory_2Materials Needed
- •New Kitchen Faucet (with included supply lines if applicable)
- •Plumber's Putty or 100% Silicone Caulk
- •Thread Seal Tape (PTFE Tape)
- •Rags/Towels
- •Mild Cleaner and Sponge
- •Optional: New Water Supply Lines (if not included with faucet or if old ones are damaged)
format_list_numberedStep by Step
Prepare Workspace & Turn Off Water
Clear everything from under the sink to give yourself ample room to work. Locate the hot and cold water shut-off valves (usually under the sink) and turn them clockwise until tight. Open the old faucet to relieve any remaining water pressure and drain residual water.
Disconnect Supply Lines
Place a bucket or small pan directly under the faucet's hot and cold water connections to catch any drips. Use an adjustable wrench to carefully loosen and remove the hot and cold water supply lines from the faucet shanks. Be prepared for a small amount of water to spill.
Remove the Old Faucet
From underneath the sink, use a basin wrench or adjustable wrench to loosen and remove the mounting nuts that secure the old faucet to the sink or countertop. If the faucet base is sealed with caulk or putty, score around it with a utility knife from above. Carefully lift the old faucet out from the top of the sink.
Clean the Mounting Area
Thoroughly clean the sink surface where the old faucet sat. Scrape off any old plumber's putty, caulk, or mineral deposits using a utility knife or small wire brush. A clean, smooth surface is crucial for ensuring a watertight seal for your new faucet.
Install the New Faucet
Apply a bead of plumber's putty or silicone caulk around the base of the new faucet (or its included gasket, if provided). Carefully feed the new faucet's supply lines and mounting shanks through the holes in the sink or countertop from above.
Secure the New Faucet
From underneath the sink, attach the mounting hardware (washers, nuts) to the faucet shanks. Hand-tighten them first to hold the faucet in place, then use a basin wrench or adjustable wrench to snug them down securely. Ensure the faucet is straight and centered before final tightening, but avoid overtightening.
Connect Water Supply Lines
Attach the new (or existing, if in good condition) supply lines to the faucet shanks, hand-tightening first. Apply thread seal tape to the threaded ends of the shut-off valves, then connect the supply lines to them, tightening with an adjustable wrench. Ensure all connections are snug.
Test for Leaks
Slowly turn the hot and cold water shut-off valves back on, watching carefully for any drips or leaks at all connections. Turn on the new faucet to flush out any air and check water flow. If you notice any leaks, turn off the water and gently tighten the problematic connection until the leak stops.
lightbulbPro Tips
Take Pictures: Before disconnecting anything, take several photos of the existing plumbing connections. These can be invaluable if you forget how something goes back together.
Have a Helper: An extra set of hands can be incredibly useful, especially when working in tight spaces under the sink or holding the new faucet in place from above while you tighten it below.
Use Plumber's Putty Wisely: Apply a generous but not excessive amount of plumber's putty or silicone caulk. It should squeeze out slightly when the faucet is tightened, indicating a good seal. Wipe away any excess immediately for a clean finish.
Don't Overtighten: While connections need to be snug to prevent leaks, overtightening can strip threads, crack fittings, or damage the faucet itself. Tighten until snug, then give a small additional turn.
Consider New Supply Lines: Even if your old supply lines look okay, replacing them with new ones (especially braided stainless steel) is a cheap insurance policy against future leaks and is often recommended when installing a new faucet.
warningCommon Mistakes to Avoid
Forgetting to Turn Off Water: Always double-check that both hot and cold water supply lines are completely shut off before disconnecting anything. Failure to do so will result in a significant and immediate mess.
Not Cleaning the Mounting Surface: Old putty, caulk, and grime can prevent the new faucet from sealing properly, leading to leaks. A clean, smooth surface is crucial for a watertight seal.
Overtightening Connections: While you want connections to be secure, overtightening can strip threads, crack plastic components, or damage the faucet itself, leading to leaks or costly repairs. Tighten until snug, then give a small additional turn.
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