how to change sink faucet

Learn how to change a sink faucet with this step-by-step guide! Save money and upgrade your bathroom or kitchen faucet yourself.

What’s the first step to changing a sink faucet?

The absolute first step to changing a sink faucet is to shut off the water supply to the faucet. This prevents a potentially messy and damaging flood when you disconnect the old faucet’s water lines.

Failing to turn off the water supply is a common mistake that can lead to a significant amount of water spraying everywhere, potentially damaging cabinets, flooring, and anything else in the vicinity. Look for the shut-off valves located under the sink, one for hot water and one for cold. Turn both valves clockwise until they are completely closed. Once you’ve shut off the valves, it’s a good idea to test them by turning on the faucet briefly. If only a small amount of water comes out and then stops, you’ve successfully shut off the supply. If water continues to flow freely, you may need to locate the main water shut-off valve for your house and turn that off instead. After confirming the water is off, place a bucket or towels underneath the sink to catch any residual water that may be present in the supply lines or the old faucet itself. This helps minimize the mess during the removal process. With the water safely off and precautions in place, you’re ready to proceed with disconnecting the old faucet.

What tools do I need to change a sink faucet?

Changing a sink faucet requires a basic set of plumbing tools to disconnect the old faucet, install the new one, and ensure watertight connections. Essential tools include an adjustable wrench, basin wrench (also called a faucet wrench), plumber’s tape (Teflon tape), a screwdriver (usually both Phillips head and flathead), a bucket, and possibly penetrating oil to loosen stubborn connections. Depending on the situation, you might also need pliers, a utility knife, and a flashlight.

The adjustable wrench is crucial for loosening and tightening supply lines and the faucet’s mounting nuts. The basin wrench is specifically designed to reach up into the tight space under the sink to loosen the nuts that secure the faucet to the sink itself. Plumber’s tape is essential for creating a watertight seal on threaded connections to prevent leaks. The bucket is necessary to catch any water remaining in the supply lines after shutoff. Sometimes, old connections can be difficult to loosen. Penetrating oil can help dissolve corrosion and make removing old parts easier. A utility knife might be needed to cut away old caulk or plumber’s putty. Finally, a flashlight is invaluable for seeing what you’re doing in the often dark and cramped space under the sink. Having these tools on hand will make the faucet replacement process smoother and more efficient.

How do I tighten the connections to prevent leaks?

To prevent leaks when connecting your new sink faucet, focus on achieving a firm but not overly tightened seal. Hand-tighten all connections first, then use appropriate wrenches (basin wrench, adjustable wrench) to tighten an additional half to three-quarters of a turn. Over-tightening can damage threads or crush washers, leading to leaks. Always check for leaks after turning the water supply back on and make slight adjustments as needed.

When tightening connections, it’s crucial to use the right tools. A basin wrench is essential for tightening the faucet’s supply lines to the faucet body itself, as it can reach into tight spaces under the sink. An adjustable wrench is useful for the connections to the water supply valves. When using these tools, apply even pressure to avoid stripping the threads or damaging the fittings. Remember to support the pipe you are tightening *against* with another wrench (often called “backing it up”) to prevent excessive stress on the existing plumbing. Before tightening, inspect all washers and O-rings. Ensure they are properly seated and in good condition. If a washer appears cracked, worn, or deformed, replace it. It’s often worthwhile to use Teflon tape on threaded connections to create a tighter seal. Wrap the tape clockwise around the threads two or three times, overlapping each layer slightly. After tightening, slowly turn on the water supply and closely inspect each connection for leaks. If you see a leak, shut off the water immediately and slightly tighten the connection. A quarter-turn might be all you need. Don’t force it, as over-tightening is a common cause of leaks. If the leak persists after minor adjustments, disassemble the connection and inspect the parts again, considering replacing washers or applying more Teflon tape.

And that’s all there is to it! Hopefully, you’ve got a shiny new faucet installed and are enjoying a leak-free sink. Thanks for following along, and we hope this guide made the process a little less daunting. Feel free to stop by again for more helpful how-tos!