You don't always need a plumber to replace a faucet. If you have basic plumbing tools and some DIY skills, you can do it yourself. But for most homeowners, hiring a plumber is the safer choice because it guarantees a leak-free, code-compliant installation done in a fraction of the time. A dripping or outdated faucet may seem like a small issue, but it can waste water, raise utility bills, and cause ongoing frustration if not fixed correctly.
The decision comes down to balancing the true cost of DIY such as time, tools, and potential mistakes against the convenience and expertise of a licensed plumber. In this guide, we'll cover everything you need to know: common faucet problems, DIY tools and costs, what professionals charge, repair vs. replacement tips, safety steps, and the signs that it's time to call a plumber.
Common Problems That Lead to Faucet Replacement
Worn O-Ring
The O-ring is a small but vital part inside your faucet. Over time, it can loosen or wear out, leading to leaks around the handle. This is usually a simple repair, but if ignored too long, it can cause damage that justifies a full faucet replacement.
Valve Seat Corrosion
The valve seat connects the faucet and spout. Sediment buildup and hard water minerals can corrode the valve seat, leading to leaks at the spout. Minor buildup can sometimes be cleaned, but advanced corrosion often means you'll need a new faucet.
Washer Problems
Improperly installed washers or worn washers are one of the top causes of dripping faucets. If a washer is the wrong size or not seated correctly, leaks will appear again quickly. This is where a professional plumber's precision makes a difference.
Outdated or Damaged Fixtures
Sometimes, replacement isn't about leaks at all. Faucets become outdated, lose efficiency, or simply no longer match your style. Modern faucets often come with water-saving features, so upgrading can also help reduce water bills.
DIY Faucet Replacement: Can You Do It Yourself?
Yes, you can replace a faucet yourself, but it's only a good idea if you're comfortable with basic plumbing and already own the right tools. A faucet swap may look simple, but even small mistakes can cause leaks or water damage that cost more to fix than hiring a plumber in the first place.
What You'll Need
- Adjustable wrench – $10–$40
- Channel-locking pliers – $10–$50
- Plumber's putty – $5–$15
- Tape measure – $5–$25
- Flexible supply lines – $3–$20 each
If you don't already own these tools, buying them could make a DIY attempt more expensive than professional installation.
Risks to Keep in Mind
DIY faucet replacement often takes 2–4 hours for someone experienced and up to a full day for beginners. Common mistakes include stripped fittings, over-tightened connections, or leaving behind a small hidden leak that shows up weeks later. In some cases, doing the work yourself can even void a faucet's manufacturer warranty.
That's why many homeowners start with DIY but end up calling a plumber when old, corroded fixtures won't come loose or when the installation doesn't seal properly.
Professional Faucet Installation: Why Call a Plumber?
Hiring a plumber for faucet replacement is often the best choice if you want the job done quickly, safely, and without surprises. A licensed plumber can usually complete the work in under an hour, while DIY attempts may stretch into several hours and risk hidden leaks that lead to water damage. Professionals arrive with the right tools, install the faucet to local code, and test water pressure to make sure everything works properly. They can also identify problems you might overlook, such as corroded pipes or weak fittings.
Another advantage is warranty protection. Many faucet manufacturers only cover their warranties when the fixture is installed by a licensed plumber. That means paying for professional help can actually save you money later if issues arise.
On average, plumber installation costs range from $45 to $400, depending on the faucet type and whether extra work—like replacing old supply lines—is needed. While DIY may seem cheaper, most homeowners find the peace of mind and long-term reliability worth the cost.
Faucet Replacement Cost Breakdown
| Type of Installation | Average DIY Cost | Average Plumber Cost |
|---|---|---|
| Bathroom Sink Faucet | $50–$150 | $120–$300 |
| Kitchen Sink Faucet | $70–$200 | $150–$400 |
| Tub/Shower Faucet | $100–$250 | $200–$450 |
| Outdoor Hose Bib | $40–$100 | $100–$250 |
Note: DIY costs assume you already own basic tools. If not, add $50–$100 for supplies.
Repair vs. Replace: How to Decide
Repair your faucet if the problem is minor, like a worn O-ring or loose washer. Replace it when the fixture is corroded, outdated, or leaking from multiple points. If you notice low water pressure, strange pipe noises, or hidden leaks, it's best to call a licensed plumber since those issues usually signal bigger plumbing problems.
Safety & Preparation Tips
Before replacing a faucet, shut off the water, clear the space under the sink, and keep towels or a bucket handy for leftover water. It's also smart to check your supply lines—if they're more than five years old, replace them to prevent future leaks.
When Should You Definitely Hire a Plumber?
Hire a plumber if you don't have the right tools or experience, if the faucet connects to old or corroded pipes, or if you're replacing a shower valve hidden behind a wall. It's also best to call a pro when leaks keep coming back after DIY attempts, since professional installation prevents costly water damage and ensures long-term reliability.
Local Advantage: Faucet Replacement with New Flow Plumbing
At New Flow Plumbing, we've helped countless homeowners with faucet replacements, from simple kitchen sinks to complex tub and shower installations. Our licensed plumbers arrive prepared with the right parts and tools, ensuring the job is done quickly and safely. If you're in our service area, calling us means you won't have to worry about hidden leaks or repeat problems.
