How Much Does a Plumber Charge to Change a Washer?

A dripping faucet isn’t just annoying—it can waste hundreds of gallons of water and hike up your utility bill. If you’ve Googled “how much does a plumber charge to change a washer,” you’re likely weighing whether to fix it yourself or hire help. The good news? Replacing a washer is often a quick, low-cost fix—but prices vary based on location, plumber rates, and faucet type. Let’s break it all down so you can make a smart, cost-effective decision.

What Is a Washer in Plumbing?

Before diving into costs, it’s important to understand what a washer actually is. In plumbing, a washer is a small rubber or neoprene ring inside a compression-style faucet that creates a watertight seal when the faucet is turned off. Over time, this washer wears out, leading to leaks.

💡 Fun Fact: Compression faucets—common in older homes—are the only type that uses washers. Modern cartridge, ceramic disc, or ball-type faucets don’t rely on them. Learn more about faucet types on Wikipedia .

If your faucet drips from the spout (not the handle), and it has separate hot/cold handles that you turn clockwise to shut off, it’s likely a compression faucet—and a worn washer is probably the culprit.

How Much Does a Plumber Charge to Change a Washer?

The average cost for a plumber to replace a washer ranges from $100 to $250, with most homeowners paying around $150. But why such a range? Several factors influence the final price:

Key Cost Factors:

• Service Call Fee: Many plumbers charge a flat “trip fee” ($50–$100) just to show up, even for minor jobs.
• Labor Rates: Hourly rates average $75–$150/hour, but most washer replacements take 30–60 minutes.
• Location: Urban areas (e.g., New York, San Francisco) often cost 20–40% more than rural regions.
• Time of Day: Emergency or after-hours service can double the price.
• Additional Repairs: If the faucet seat is corroded or the valve stem is damaged, extra work (and cost) may be needed.

📊 2024 National Average (HomeAdvisor Data):

• Minimum: $75
• Average: $148
• Maximum: $275

DIY vs. Hiring a Plumber: Pros and Cons

Replacing a washer is one of the simplest plumbing fixes—but is it right for you?

✅ DIY Advantages

• Cost: Washers cost $0.10–$2 at any hardware store.
• Time: Takes 20–40 minutes with basic tools (adjustable wrench, screwdriver).
• Learning: Builds confidence for future home repairs.

❌ DIY Risks

• Wrong Washer Type: Using the incorrect size or material can cause leaks to persist.
• Over-Tightening: Can crack the faucet body or damage threads.
• Hidden Damage: You might miss a corroded valve seat that needs reseating.

🛠️ When to Call a Pro

• You’re uncomfortable turning off the water supply.
• The faucet continues leaking after replacement.
• Your home has older galvanized pipes prone to breaking.

💬 Expert Insight:
“I’ve seen more damage from DIYers stripping faucet stems than from the original leak,” says Marcus Lee, licensed plumber with 18 years of experience in Chicago. “If you’re unsure, a $150 service call beats a $500 faucet replacement.”

Step-by-Step: How to Replace a Washer Yourself

If you’re ready to try it yourself, follow these precise steps:

1. Turn Off Water Supply
   Locate shut-off valves under the sink. Turn both clockwise until tight. If none exist, shut off the main house valve.
2. Plug the Drain
   Use a sink stopper or rag to prevent small parts from falling in.
3. Remove Faucet Handle
   Pry off the decorative cap (usually with a flathead screwdriver), then unscrew the handle screw. Lift off the handle.
4. Unscrew the Valve Stem
   Use an adjustable wrench to loosen the packing nut, then twist out the stem.
5. Replace the Washer
   Remove the old washer (often held by a brass screw). Match it to a new one at the hardware store—standard sizes are 3/8″, 7/16″, or 1/2″.
6. Reassemble & Test
   Reinstall the stem, handle, and cap. Turn water back on slowly. Check for leaks.

⚠️ Pro Tip: Apply plumber’s grease to the stem threads before reassembly—it prevents future seizing and makes future repairs easier.

Cost Comparison: DIY vs. Professional

🔍 Note: A licensed plumber often includes a warranty (30–90 days) on parts and labor—handymen rarely do.

Signs You Need More Than Just a Washer

Sometimes, a leak isn’t just about the washer. Watch for these red flags:

• Dripping continues after washer replacement
• Handle is stiff or won’t turn
• Water leaks around the base of the faucet
• Rust or mineral buildup inside the valve

These may indicate a damaged faucet seat (the surface the washer seals against). Reseating it requires a special tool ($10–$15) or professional help.

FAQ Section

Q1: How long does a faucet washer last?

A: Typically 5–10 years, depending on water hardness and usage. Frequent on/off cycling shortens lifespan.

Q2: Can I use any rubber washer?

A: No. Use neoprene or EPDM rubber washers—they resist heat and degradation better than generic rubber. Always match the size exactly.

Q3: Why is my faucet still leaking after changing the washer?

A: Likely causes: wrong washer size, damaged valve seat, cracked stem, or improper reassembly. Try reseating the valve or consult a plumber.

Q4: Is it worth fixing an old faucet?

A: If it’s a quality brand (e.g., Moen, Delta), yes. But if it’s corroded or obsolete, replacement ($100–$300) may be smarter long-term.

Q5: Do plumbers charge by the hour or per job?

A: Most offer flat-rate pricing for small jobs like washer replacement. Always ask for a quote before work begins.

Q6: Can I prevent washer wear?

A: Avoid over-tightening handles—just turn until water stops. This reduces compression stress on the washer.

Conclusion

Now you know: how much a plumber charges to change a washer typically falls between $100 and $250—but a DIY fix could cost less than $5 if you’re confident and prepared. Either way, addressing that drip quickly saves water, money, and peace of mind.

If you found this guide helpful, share it with a friend who’s battling a leaky faucet! 💧
And remember: when in doubt, a licensed plumber isn’t just fixing a washer—they’re protecting your home’s plumbing system.

Got questions? Drop them in the comments below—we love helping homeowners make smart, informed choices.