How do I fix a leaky faucet? - AI Plumbing Expert Answer

Understanding Your Leaky Faucet

A leaky faucet is one of the most common plumbing problems, but it's also one of the most fixable! Before we dive into the repair, let's understand what's happening.

Why Faucets Leak

Most faucet leaks are caused by:

• Worn washers or O-rings (compression faucets)
• Damaged cartridges (cartridge faucets)
• Failed ceramic discs (disc faucets)
• Corroded valve seats
• Loose parts from wear and tear

Tools You'll Need

• Adjustable wrench
• Screwdriver set (flathead and Phillips)
• Allen wrench set
• Replacement parts (washer, O-ring, or cartridge)
• Plumber's grease
• Towel or rag
• Flashlight

Step-by-Step Repair Guide

Step 1: Shut Off the Water

CRITICAL: Turn off the water supply before starting!

1. Look under the sink for shut-off valves
2. Turn them clockwise until tight
3. Turn on the faucet to drain remaining water
4. Plug the drain to prevent losing small parts

Step 2: Identify Your Faucet Type

There are four main types:

1. Compression (two handles, separate hot/cold)
2. Cartridge (single or double handle)
3. Ball (single handle with rotating ball)
4. Ceramic disc (single handle, very smooth operation)

Step 3: Disassemble the Faucet

For Compression Faucets:

1. Remove handle screw (often hidden under cap)
2. Lift off the handle
3. Unscrew the packing nut
4. Remove the stem

For Cartridge Faucets:

1. Remove handle cap and screw
2. Pull handle straight up
3. Remove retaining clip or nut
4. Pull out cartridge

Step 4: Replace Worn Parts

Compression Faucet:

• Replace the rubber washer at the stem bottom
• Replace O-rings on the stem
• Apply plumber's grease to new parts

Cartridge Faucet:

• Replace entire cartridge if damaged
• Replace O-rings if cartridge looks good

Step 5: Reassemble & Test

1. Reassemble in reverse order
2. Turn water back on slowly
3. Check for leaks
4. Test hot and cold water

Pro Tips for Success

• Take photos during disassembly for reference
• Bring old parts to the hardware store for exact matches
• Apply plumber's grease to all rubber parts
• Don't overtighten - hand-tight plus a quarter turn is usually enough
• Check the valve seat for corrosion while you're in there

When to Call a Plumber

Consider professional help if:

• The valve seat is corroded
• You can't identify the faucet type
• Leaking continues after repair
• You're uncomfortable with any step
• The faucet is very old (might need replacement)

Cost Savings

DIY Repair: $5-$20 for parts Professional Repair: $150-$350 Water Waste from Leak: Up to 3,000 gallons/year

Fixing it yourself saves money and conserves water!

Safety Reminders

• Always turn off water before starting
• Protect chrome finishes with a towel when using wrenches
• Keep small parts organized
• Work in good lighting

Your leaky faucet should be fixed in 30-60 minutes. Take your time, stay organized, and don't hesitate to ask for help if needed!