Replacing a sprinkler head takes 10 to 15 minutes and costs $5 to $25 per head
A broken or clogged sprinkler head is one of the easiest parts of your irrigation system to fix yourself. You do not need to dig up pipes or shut off the whole system. Most heads screw or pop straight out of the riser (the short vertical pipe they sit on), and new ones fit the same way. The hardest part is usually identifying which type you have so you buy the right replacement.
The job requires only a flathead screwdriver, an adjustable wrench, and the new head itself. You can buy replacements at any hardware store or online, and they come in the same basic types as what you are replacing: pop-up spray heads, rotor heads, or drip emitters. Matching the brand and model makes installation faster, but any head rated for your water pressure will work.
Key Takeaways
- Most sprinkler heads screw onto a riser with a straightforward counterclockwise turn, or pop straight up and out if they are the snap-fit type.
- Before you buy a replacement, note the spray pattern (full circle, half circle, quarter circle) and the brand name printed on the head itself.
- Turn off the water at the valve or timer before you start, then turn it back on briefly to flush debris from the riser before installing the new head.
- Adjust the new head's spray radius and pattern using the small screws or dials on top, then test it before you walk away.
Identify the type of sprinkler head you have
Look at the sprinkler head in your yard and note its shape and how it sits. Pop-up spray heads are small cylinders that rise above ground when water runs and sink back down when it stops. Rotor headsDrip emitters
Check the top or side of the head for a brand name and model number. Common brands include Hunter, Rain Bird, Toro, and Orbit. Write down or photograph this information—it will help you find an exact match at the store. If you cannot read the label, take a photo of the whole head and bring it with you when you shop.
Also note the spray pattern: does it spray in a full circle, a half circle, or a quarter circle? This matters because you need to replace it with the same pattern to keep your lawn watered evenly. The pattern is usually printed on the head or on a small dial you can adjust.
Turn off the water and remove the old head
Locate the valve or timer that controls the zone your broken sprinkler is in. Turn it off completely. If you cannot find the zone valve, turn off the main water supply to the whole system. Wait a minute for pressure to drop.
Once the water is off, grip the sprinkler head firmly and try turning it counterclockwise by hand. Most screw-on heads will loosen this way. If it does not budge, use an adjustable wrench to grip the riser (the pipe below the head) with one hand while you turn the head with the other. Do not force it—if it is stuck, spray a little penetrating oil around the base and wait 10 minutes.
If the head pops straight up instead of screwing, it is a snap-fit type. Grip it at the base and pull straight up with steady pressure. It should come free. Some snap-fit heads have a small collar you twist first to release them; check the top of the head for a locking ring.
Flush the riser and prepare for the new head
Once the old head is off, you will see the riser—a short pipe sticking up from the ground. Turn the water back on for just 5 to 10 seconds to flush out any dirt or debris that collected inside. This prevents clogs in your new head. Turn the water off again.
Look inside the riser opening. If you see sand, grass, or sediment, use a small flathead screwdriver to gently scrape the inside walls clean. Wipe the threads with a dry cloth if the head screws on. Do not use tape or sealant on the threads unless the old head had it—most modern heads do not need it.
Install the new sprinkler head
If your new head screws on, align it with the riser and turn it clockwise by hand until it is snug. Use the wrench to tighten it another quarter turn, but do not over-tighten—you can crack the plastic fitting. The head should sit level and upright when you are done.
If your new head is snap-fit, push it straight down onto the riser until you hear or feel a click. It should sit firmly without wobbling. Some snap-fit heads have a collar that twists to lock; turn it clockwise until it stops.
Turn the water back on at the valve or timer. Watch the new head spray for 30 seconds to make sure water comes out evenly and there are no leaks at the base. If water sprays from the connection point instead of the nozzle, turn the water off and tighten the head another quarter turn.
Adjust the spray pattern and radius
Most spray heads have adjustment screws or dials on top. A small flathead screwdriver fits into these slots. The radius screw controls how far the water shoots; turning it clockwise usually increases distance, counterclockwise decreases it. The pattern screw or dial lets you change from full circle to half or quarter circle.
Rotor heads often have a small screw on the side that adjusts the arc—the angle of the spray. You can set it to water only part of a circle if your sprinkler is near a fence or driveway. Refer to the instruction sheet that came with the head, or search the brand name and model online for a diagram.
Adjust the head so it waters your lawn or garden evenly without spraying onto pavement, your house, or your neighbor's yard. Run the system for a full cycle to watch where the water lands, then make fine adjustments as needed.
Check for leaks and test the new head
Run the sprinkler zone for at least one full cycle (usually 10 to 20 minutes) and watch for leaks at the base of the head or where it connects to the riser. A small drip is normal while the system pressurizes, but steady water flowing out means the connection is not tight enough. Turn off the water, tighten the head another quarter turn, and test again.
If the new head does not spray evenly, or if one side sprays farther than the other, the radius or pattern adjustment may need fine-tuning. Most heads let you make these changes while the water is running, so you can see the effect right away.
When to call a professional
If water sprays from cracks in the riser itself rather than from the head, the riser may be broken and need replacement—that job requires digging and is best left to a professional. If you cannot turn off the water to your zone, or if the main valve is stuck or leaking, call a plumber or irrigation specialist.
If you replace the head and water still does not come out, the problem may be a clogged line or a closed valve upstream. A professional can trace the line and clear it. Most irrigation companies charge $75 to $150 for a service call, plus the cost of repairs.
Frequently Asked Questions
Can I replace a sprinkler head without turning off the water?
You can, but you will get soaked and the debris flush will not work. Turning off the water takes 30 seconds and prevents dirt from clogging your new head. Find your zone valve or main shutoff and use it.
What if the old head is stuck and will not unscrew?
Spray penetrating oil around the base where the head meets the riser and wait 10 to 15 minutes. Try again with the wrench, gripping the riser firmly so you do not twist the pipe underground. If it still will not budge, a plumber can remove it without damaging the riser.
Do I need to buy the exact same brand as the old head?
No. Any pop-up spray head rated for your water pressure (usually 40 to 80 PSI) will fit the same riser. Matching the brand makes installation slightly easier because the threads are identical, but it is not required. Just match the spray pattern and type.
How do I know what spray pattern to buy?
Look at the old head or the riser area. If the sprinkler waters a full circle around it, buy a full-circle head. If it waters only half the area (like against a wall), buy a half-circle or 180-degree head. The pattern is usually printed on the head or listed on the box.
Why is my new sprinkler head leaking at the base?
The connection is not tight enough. Turn off the water, use a wrench to tighten the head another quarter turn, and test again. If it still leaks, the threads may be damaged—remove the head and inspect the riser for cracks or stripped threads.