How to Repair or Replace a Kitchen Faucet Sprayer

Kitchen sprayers fail more often than any other faucet component, and it's usually not the faucet itself that's broken. The sprayer head clogs with mineral deposits, the hose develops a pinhole leak, or the diverter valve inside the faucet gets stuck and stops routing water to the spray head. The good news: you almost never need a plumber. A sprayer head takes ten minutes to swap, and a full hose assembly takes maybe an hour if you're methodical. Even if you end up replacing the whole thing, you're looking at a straightforward job that pays for itself immediately versus a service call.

1. Shut Off Water First. Close the shut-off valves under the sink (turn them clockwise until tight). If you don't have shut-offs, locate the main water valve. Open the faucet and sprayer briefly to release any remaining water pressure in the lines. Look under the sink at where the sprayer hose enters the faucet body or how it connects to the spray head—this is your disconnect point. You'll either see a hose coming from the faucet base, a clip holding the head to the hose, or a threaded coupling.
2. Separate Head from Hose. Most spray heads twist counterclockwise to separate from the hose, or they're held in place by a small plastic clip that slides out. If it's threaded, use an adjustable wrench or your fingers to unscrew it gently—don't force plastic threads. If it clips on, look for a small tab or groove on the side of the head where you can pry the clip upward with a flathead screwdriver. Once the head is free, set it aside.
3. Dissolve Mineral Buildup. Look inside the sprayer head—you'll see a fine mesh screen or several small nozzles. Soak the entire head in a cup of white vinegar for 15–20 minutes to dissolve mineral deposits. Use an old toothbrush to scrub the screen and nozzles while it's still in the vinegar. Rinse under warm running water. If deposits are heavy, use a needle or a toothpick to gently clear individual nozzle holes, being careful not to enlarge them. Blow through the head to confirm water flows freely in all directions.
4. Hunt for Hose Damage. Look along the full length of the sprayer hose for pinhole leaks, cracks, or kinks. Hold it up to the light and look through it to see if there's debris or mineral buildup inside. If you see a pinhole or crack, the hose needs replacing (go to Step 9). If the hose looks intact but feels blocked, try running vinegar through it: remove the hose from the faucet, put one end in a cup of vinegar, and let it soak for 20 minutes, then flush it with warm water from the other end.
5. Test the Diverter Valve. The diverter is the valve inside the faucet that redirects water from the spout to the sprayer. Turn the water back on at the shut-offs and test the pull-up spray handle. If water barely comes out of the sprayer or still comes from the spout, or if the handle feels stuck, the diverter is your problem. Turn off the water again. The diverter is often accessed by removing a small cartridge or pull-up rod assembly from inside the faucet—this varies by brand. Check under your sink for the faucet's name, then look up the cartridge removal process. If you're unsure, soaking the faucet's pull rod or cartridge in vinegar for 30 minutes sometimes frees it.
6. Reattach the Spray Head. If the head came out clean and flows well after soaking, screw or clip it back onto the hose in reverse order. Hand-tighten a threaded head—don't use tools. If the head still has weak spray or clogged nozzles after soaking, it's time to replace it (go to Step 9). Reconnect it to the hose the same way it came off, making sure it's seated fully so it doesn't leak.
7. Verify Full Spray Flow. Slowly open the shut-off valves under the sink (turn counterclockwise). Hold the faucet sprayer over the sink and pull up the handle to trigger the spray. The spray should be even, forceful, and come from all nozzles. Turn the handle side to side to test full range of spray patterns if your head has settings. If water leaks from the hose connection or the sprayer head, turn off water and tighten the coupling slightly with an adjustable wrench, then test again.
8. Source the Right Part. If the head is still clogged after vinegar soaking or the spray is weak even after cleaning, note your faucet's brand and model (usually stamped on the base or on a label inside the cabinet). Go online or call the faucet manufacturer with the model number—they'll tell you which sprayer head part number fits. Order it directly from the manufacturer or buy a universal sprayer head from a big-box hardware store. Cost is typically $15–$30. Some spray heads are paired with specific hose assemblies, so confirm compatibility before ordering.
9. Install New Spray Head. Turn off the water at the shut-offs again. Unscrew or unclip the old head from the hose (repeat Step 2 if needed). Take the new head and thread it onto the hose or clip it in place, following the instructions that came with the part. Hand-tighten threads—don't use a wrench. If the new head came with a screen insert or nozzle assembly, install it as shown in the package. Reconnect the hose to the faucet if it was disconnected, making sure all couplings are hand-tight.
10. Replace the Entire Hose. Turn off the water. The hose usually connects to the faucet body under the sink with a threaded coupling and runs to the spray head. Using an adjustable wrench, grip the coupling nut at the faucet and turn it counterclockwise to loosen it—the hose will fall free. If the hose is clipped to the sink basin or cabinet, remove those clips. Take the old hose to the hardware store and buy a matching replacement hose and spray head assembly (usually sold together as a kit). Install the new hose by threading the coupling into the faucet port hand-tight, then snug it with a wrench—don't over-tighten plastic. Clip or route the hose away from sharp edges and hot pipes, connect the spray head, and test.
11. Know When to Call Pro. If the spray head and hose are clean and new but water still doesn't divert to the sprayer, the problem is the diverter valve inside the faucet. This is where a call to a plumber or the faucet maker's support line makes sense—diverter replacement requires taking apart the faucet cartridge and is brand-specific. However, try one more fix first: soak the pull-up rod assembly in vinegar for 30 minutes, work it up and down gently a dozen times, and test again. If that fails, you'll need a replacement diverter cartridge (order by faucet model) or a professional repair.