To repair a broken faucet, start by turning off the water supply under the sink and then disassemble the handle to identify the faucet type—compression, cartridge, ball, or ceramic disc. This guide from MyTownPlumber Editorial Team will walk you through each step, from diagnosing the problem to replacing worn parts. Whether you have a dripping faucet or a stuck handle, these instructions apply to most standard faucets found in US homes, including both single-handle and dual-handle models. With the right tools and a bit of patience, you can often fix the issue yourself and avoid a service call. However, if you encounter difficulties or prefer professional help, MyTownPlumber offers expert plumbing services including leak detection and pipe repair.
Tools and Materials You’ll Need
Before starting, gather the following tools and replacement parts. Having everything ready will make the repair smoother.
- Adjustable wrench – for loosening and tightening nuts under the sink.
- Screwdrivers – both Phillips and flathead to remove handle screws and caps.
- Pliers – for gripping and turning stubborn parts.
- Replacement parts – such as O-rings, cartridges, washers, or ball assemblies. Take the old part to a hardware store to ensure an exact match.
- Plumber’s tape (Teflon tape) – to seal threaded connections and prevent leaks.
- Penetrating oil – like WD-40, for loosening rusted or stuck components.
- Bucket and towel – to catch water and clean up spills.
Typical replacement parts cost between $10 and $40, though prices vary by region and brand.
Step-by-Step Repair Process
1. Turn Off the Water Supply
Locate the shut-off valves under the sink. They are usually chrome or plastic knobs. Turn them clockwise until they stop. Do not overtighten. If your sink lacks shut-off valves, turn off the main water valve for your home, typically near the water meter or in the basement. After closing the valves, open the faucet to relieve any pressure and drain remaining water. Place a bucket under the faucet to catch drips. Wear gloves to protect your hands.
2. Remove the Handle
Look for a small decorative cap on top of the handle, often marked with an H or C. Use a flathead screwdriver to gently pry it off. Underneath, you’ll find a screw. Remove the screw with a Phillips screwdriver. Lift the handle straight up. If it’s stuck, apply penetrating oil and wait a few minutes, then tap lightly with a rubber mallet. For single-handle faucets, the set screw may be on the side of the handle base.
3. Identify Your Faucet Type
Once the handle is off, examine the internal mechanism. The four main types are:
| Faucet Type | Common Problem | Repair Method |
|---|---|---|
| Compression | Dripping from spout | Replace rubber washer or O-ring |
| Cartridge | Leaking from handle or spout | Replace cartridge |
| Ball | Wobbly handle or leak | Replace ball and springs/seats |
| Ceramic Disc | Hard to turn or constant drip | Replace disc assembly or clean debris |
Compression faucets are common in older homes and have two handles. Cartridge faucets are widely used in modern single-handle designs. Ball faucets are typically found in kitchen sinks. Ceramic disc faucets offer smooth operation and durability. If you’re unsure, remove the cartridge or stem and take it to a hardware store for identification.
4. Replace the Faulty Component
Based on the type, proceed with the repair:
- Compression: Unscrew the stem nut, lift out the stem, and replace the rubber washer at the bottom. Also check the O-ring around the stem.
- Cartridge: Pull out the old cartridge using pliers or a cartridge puller. Insert the new cartridge, ensuring alignment tabs match. Secure with the retaining clip.
- Ball: Remove the cap and ball. Replace the ball, springs, and rubber seats. Apply plumber’s grease to the new parts.
- Ceramic Disc: Remove the cartridge (often held by a clip). Clean any debris from the housing. Install a new disc cartridge.
Apply plumber’s tape to any threaded connections before reassembly. Always use the exact replacement part specified for your faucet brand.
5. Reassemble and Test
Reverse the disassembly steps. Tighten screws and nuts firmly but avoid overtightening, which can crack plastic parts. Turn the water supply back on slowly. Check for leaks at the handle and spout. Let the water run for a minute to flush out any debris. If the faucet still drips, check the aerator for debris. Unscrew the aerator, clean it with vinegar, and reinstall. If leaks persist, double-check that all parts are properly seated and that O-rings are in place.
Common Mistakes to Avoid
- Forgetting to turn off the water supply – always start by shutting off the valves.
- Using the wrong replacement part – take the old part to the store for comparison.
- Overtightening connections – can damage threads or crack components.
- Skipping plumber’s tape – this can cause leaks at threaded joints.
- Not cleaning debris – sediment can prevent a proper seal.
When to Call a Professional Plumber
Some faucet repairs require specialized tools or expertise. If you encounter stripped threads, hidden leaks behind the wall, or if the faucet is old and corroded, it’s best to call a professional. MyTownPlumber offers expert leak detection and pipe repair services to handle complex plumbing issues. We also provide drain cleaning and water heater repair for other common household problems. If your faucet is over 20 years old or has multiple leaks, consider replacing it entirely. New faucets are more water-efficient and often come with a limited warranty. Our team can help with faucet replacement as well.
Water Conservation and Efficiency
A broken faucet can waste thousands of gallons of water each year. According to the EPA WaterSense program, fixing easily corrected household leaks can save homeowners about 10% on their water bills. Additionally, the U.S. Department of Energy notes that repairing hot water leaks reduces energy consumption, lowering your utility costs. By repairing your faucet promptly, you contribute to water conservation and save money. Consider upgrading to a WaterSense-labeled faucet for even greater efficiency.
If you prefer professional assistance or your DIY repair didn’t solve the problem, the MyTownPlumber team is here to help. Contact us today for expert faucet repair and other plumbing services.
Article by MyTownPlumber Editorial Team.