Fixing a leaky household faucet, understanding its causes, and implementing DIY or professional repair solutions. Troubleshooting & Fixes (2024 Guide)

    A veteran tech's guide to fixing that leaky faucet. Find out if it's a DIY job or time to call a pro, with real costs and no-nonsense troubleshooting tips.

    DIY Fix: $5–$20
    Pro Help: $150–$500
    Time: 15–120 min

    Quick Answer

    Okay, so that drip-drip-drip is driving you nuts. I get it. Most of the time, and I mean really most of the time, it's just a worn-out rubber washer or a little O-ring that's given up the ghost. A simple fix. You can grab a little universal kit or specific replacement parts for $5-25 at the hardware store and probably knock it out yourself in under an hour. If you call a professional plumber, you're looking at maybe $120-250 for a basic repair, depending on the faucet's condition and the complexity. But if it's a fancier cartridge faucet, requires a specific part, or the leak is more severe, the price for professional repair can range from $150-$400. Still, it's usually not a bank-breaker for most common faucet issues.

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    Common Symptoms

    Dripping from the faucet spout when turned off
    Water pooling around the base of the faucet handle
    Squealing or grinding noise when turning the faucet handle
    Water leaking from under the sink near the faucet connections
    Difficulty turning the faucet handle or it feels loose

    Possible Causes

    Worn-out rubber washers: The most common cause for compression faucets; they get squished and cracked over time.
    Damaged O-rings: Common in cartridge and disc faucets, these rubber rings get brittle and fail, causing leaks around the handle.
    Corroded or broken valve seats: The brass seat that the washer presses against can get pitted, preventing a good seal.
    Loose or worn-out gaskets: Seals at the base of the faucet can degrade and let water seep out onto the countertop.
    Cracked or damaged ceramic disc cartridges: Though durable, these can crack from over-tightening or due to debris, causing leaks.
    Mineral buildup in the faucet components: Hard water deposits can seize up moving parts and cause seals to fail.
    Loose packing nuts: On older compression faucets, the nut underneath the handle can become loose, causing a leak at the handle.
    Improperly installed faucet components: Cross-threaded connections or under-tightened supply lines are a common cause for leaks under the sink.

    Step-by-Step Diagnosis

    1

    Step 1

    Identify the type of faucet (compression, cartridge, ceramic disc, ball). The repair process depends entirely on the type.

    2

    Step 2

    Locate the source of the leak. Dry everything and watch to see if water comes from the spout tip, the handle base, or from under the sink.

    3

    Step 3

    Turn off the water supply to the faucet. The shutoff valves are usually directly under the sink. Turn them clockwise until they stop.

    4

    Step 4

    Disassemble the faucet by prying off decorative caps, removing screws, and pulling off the handles to expose the internal components.

    5

    Step 5

    Inspect internal components like washers, O-rings, cartridges, and valve seats for any visible wear, cracks, or corrosion.

    Fixing a leaky household faucet, understanding its causes, and implementing DIY or professional repair solutions. Troubleshooting & Fixes (2024 Guide)
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    DIY vs Professional Costs

    Replacing Washers/O-Rings (Simple Fix)
    DIY$5-25
    Pro$120 - $250
    Time30-60 mins
    Replacing a Faucet Cartridge
    DIY$20-80
    Pro$150 - $400
    Time1-2 hours
    Replacing a Valve Seat
    DIY$5-20
    Pro$150 - $350
    Time1-2 hours
    Replacing the Whole Dang Faucet
    DIY$100-800+
    Pro$250 - $800+
    Time2-3 hours

    When to Call a Professional Handyman

    • If you cannot identify the source of the leak after taking the faucet apart.
    • If the leak persists after you've already replaced the common wear parts like washers or O-rings.
    • If the faucet is old, heavily corroded, and feels like it's going to break if you put a wrench on it.
    • If the leak is severe, spraying water, or coming from the supply lines under the sink.
    • If you are uncomfortable working with plumbing, lack the necessary tools, or are just plain frustrated and want it done right.

    Prevention Tips

    • Avoid over-tightening faucet handles, which crushes washers and ceramic discs.
    • Clean faucet aerators regularly by unscrewing them and rinsing out mineral buildup.
    • Use a water softener if you live in an area with hard water to reduce mineral deposits inside the faucet.
    • Perform periodic inspections of your faucets for early signs of drips or leaks around the base.
    • Turn water supply valves off at the sink if leaving home for an extended period to prevent catastrophic leaks.
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