Plip. Plip. Plip.
There is no sound more annoying in a quiet house than a dripping faucet. Beyond the psychological torture, a slow drip can waste hundreds of gallons of water a year, inflating your utility bill silently.
Calling a plumber for a simple drip often costs a minimum call-out fee that exceeds the price of the faucet itself. The reality? This is one of the easiest home repairs you can perform. The part usually costs less than a dollar.
Important Note Before We Start: This guide is specifically for Compression Faucets. These are the traditional faucets with two separate handles (one for hot, one for cold) that you have to rotate to turn on. If you have a single-lever faucet that you lift up, you likely have a cartridge or ball valve, which requires a different repair method.
If you have a two-handle faucet that drips from the spout, the culprit is almost always a worn-out rubber washer. Here is how to swap it out.
Phase 1: The Setup (Don’t skip this)
Before you touch a wrench, you must secure the area.
- Turn Off the Water: Look under the sink. You should see two shut-off valves. Turn them clockwise until tight. If there are no valves, you must turn off the main water supply to the house.
- Check: Turn on the faucet handles to ensure no water comes out.
- Plug the Drain: This is the most common rookie mistake. Place a rag or a stopper in the sink drain. If a tiny screw falls down the drain, your 20-minute repair becomes a nightmare.
Tools You Need:
- Flathead and Phillips screwdrivers.
- Adjustable wrench (or Channel-lock pliers).
- Assorted Washer Kit: Buy a variety pack at the hardware store since you won’t know the exact size until you open the faucet.
- Plumber’s Grease (Heat-Proof Grease): Essential for smooth operation.
Phase 2: Disassembly
Step 1: Remove the Handle
On top of each handle, there is usually a decorative cap (often labeled “H” or “C”).
- Use a thin flathead screwdriver or a knife to gently pry this cap off.
- Underneath, you will see a screw. Remove it with your Phillips screwdriver.
- Pull the handle straight up. If it is stuck due to corrosion, tap it gently with the handle of your screwdriver to loosen it.
Step 2: Remove the Packing Nut
With the handle gone, you will see the valve stem assembly.
- Use your adjustable wrench to loosen the packing nut.
- Once loose, unscrew the stem assembly by hand and pull it straight out of the faucet body.
Phase 3: The Replacement
Now you have the stem in your hand. Look at the bottom of it. You will see a black rubber circle held in place by a brass screw. That rubber circle is the washer, and it is likely flattened, cracked, or shredded.
Step 1: Remove the Old Washer
Unscrew the brass screw holding the washer. It might be tight. Use a screwdriver that fits perfectly to avoid stripping the head. Peel off the old washer.
Step 2: The “Valve Seat” Check (The Expert Secret)
Read this carefully: If you replace the washer but the faucet still drips, the problem isn’t the washer—it’s the “Seat.” The seat is the metal circle inside the faucet body that the washer presses against. Reach your finger into the faucet body and feel the seat.
- Smooth? Good. Proceed.
- Rough or Pitted? The rough metal will tear up your new washer in days. You need to either dress (smooth) the seat with a “seat-dressing tool” or replace the seat itself (requires a seat wrench).
Step 3: Install the New Washer
- Find a washer in your kit that matches the size of the old one exactly.
- Press it into the cup at the bottom of the stem.
- Crucial: Install a new brass screw (usually included in the kit). Old screws are prone to snapping.
Step 4: Lubricate
Apply a small amount of plumber’s grease to the threads of the stem and the new washer. This ensures the faucet turns smoothly and prevents the rubber from drying out.
Phase 4: Reassembly
Now, simply reverse the process.
- Insert the stem assembly back into the faucet body.
- Tighten the packing nut with your wrench. Warning: Do not overtighten. Just make it snug. Overtightening can crack the faucet body or make the handle hard to turn.
- Push the handle back on and screw it in place.
- Pop the decorative cap back on.
Phase 5: The Moment of Truth
- Remove the rag from the drain.
- Turn the water supply valves back on slowly.
- Turn on the faucet to let trapped air sputter out.
- Turn the faucet off.
Listen.
If there is silence, you have won.
Troubleshooting: Leaking from the Handle?
If water is leaking from under the handle rather than the spout, the washer isn’t the problem. The problem is the O-ring.
- This is a thin rubber ring located higher up on the stem.
- The fix is identical: disassemble, peel off the old O-ring, roll on a new one, add grease, and reassemble.
Replacing a washer is a classic homeowner rite of passage. It costs pennies and saves gallons. By maintaining your compression faucets, you extend their lifespan and avoid the high cost of emergency plumbing services.
Next time you hear that drip, don’t grab the phone to call a pro—grab your wrench.
Did you find a damaged valve seat while fixing your faucet? Let us know how you handled it in the comments below!
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