Replace a sprinkler head by unscrewing the old one, cleaning the threads, and screwing in a new one that matches your system's spray pattern

Most sprinkler heads unscrew by hand or with a wrench, and the whole job takes under ten minutes once you locate the right replacement. The hardest part is matching the spray pattern — a head that waters in a circle will not work where you need a half-circle — but the old head itself tells you what to buy. You do not need to dig, cut pipe, or turn off the water system.

This guide covers pop-up heads (the kind that rise when water runs) and stationary heads (the kind that stay above ground). Both follow the same removal and installation steps. Rotary heads, which spin and cover larger areas, use the same method but may have an adjustment collar you will want to keep.

Key Takeaways

  • Turn off the water at the valve or timer before you start, so you do not get soaked and can see what you are doing.
  • Unscrew the old head by hand or with a wrench, then clean the threads on the riser (the pipe stub) with a dry cloth.
  • Buy a replacement head with the same spray pattern as the old one — check the old head's markings or bring it to the store.
  • Screw the new head on by hand until snug, then run water to check for leaks before you adjust the spray pattern.
  • Do not overtighten; hand-tight plus a quarter turn with a wrench is enough and prevents cracking the plastic.

Turn off the water and locate the broken head

Find your sprinkler timer or the main valve for that zone and turn it off. If you have a battery-powered timer on the controller, switch it to "Off" rather than "Auto." If your system has a manual valve near the sprinkler heads, close that instead. Wait a few seconds for water pressure to drop — you will hear the hiss stop.

Walk to the head that needs replacing and look at it closely. Pop-up heads have a plastic or metal cylinder that rises out of the ground when water runs; stationary heads sit above ground all the time. Note the spray pattern marked on the top — it will say something like "full circle," "half circle," "quarter circle," or "90 degrees." Write this down or take a photo, because you need to buy the exact same pattern.

Remove the old sprinkler head

Grip the head itself — not the riser (the pipe it screws onto) — and turn it counterclockwise by hand. Most heads unscrew easily. If it is stuck, use an adjustable wrench on the riser just below the head to hold it steady, then turn the head with your other hand. Do not use the wrench on the head itself; you will crack the plastic.

Once the head comes free, set it aside. You will see the riser — a short pipe stub sticking up from the ground — with threads on top. Look inside the opening and wipe away any dirt, sand, or debris with a dry cloth. Do not pour water in; you want the threads clean and dry so the new head seals properly.

Buy the correct replacement head

Take the old head to a garden center, hardware store, or irrigation supply shop. Show the staff the spray pattern marking and tell them what brand your system is if you know it (Hunter, Rain Bird, Toro, and Orbit are common). They will hand you a matching head. If you cannot find the exact brand, a universal head with the same spray pattern works fine — most systems use standard threads.

If the old head is damaged or the marking is worn off, describe where the head sits: does it water a corner (quarter circle), a side bed (half circle), or the middle of a lawn (full circle)? The staff can figure out the pattern from that. Bring the old head with you if possible; it is the fastest way to get the right replacement.

Install the new head and check for leaks

Hold the riser steady with one hand and screw the new head on by hand, turning clockwise. Tighten it until you feel resistance — do not force it. If you need more grip, use a wrench on the riser to hold it still while you turn the head, but stop as soon as the head is snug. Hand-tight plus a quarter turn with the wrench is the right amount; over-tightening cracks plastic heads.

Turn the water back on at the timer or valve. Watch the head as water pressure builds. It should rise smoothly (if it is a pop-up) and spray in the pattern you chose. Look at the base where the head screws on — you should see no water leaking out. If water drips from the threads, turn off the water, unscrew the head a quarter turn, and try again. If it still leaks, the threads may be damaged; see the FAQ below.

Adjust the spray pattern and range if needed

Once water is running, most heads have an adjustment screw on top or a collar around the base that lets you change the spray angle and distance. Consult the instruction sheet that came with the new head, or look up the brand online — each maker uses different controls. Some heads have a small screwdriver slot on top; others have a dial you turn by hand.

Make small adjustments while the water is on so you can see the spray pattern change. Aim to water only the area you want and avoid pavement, walls, or your neighbor's yard. Once you are happy with the pattern, turn off the water and you are done.

Common mistakes to avoid

The most common error is buying a head with the wrong spray pattern. A full-circle head in a corner will water your neighbor's driveway. A quarter-circle head in the middle of a lawn will leave dry spots. Always match the old head's pattern exactly.

Overtightening is the second mistake. Plastic heads crack easily, and a cracked head leaks constantly. Tighten by hand until snug, then use a wrench for no more than a quarter turn. If you hear a cracking sound, you went too far — unscrew it, inspect for cracks, and replace if needed.

Do not forget to turn the water back on. It sounds obvious, but many people install the head, walk away, and wonder why the sprinkler does not work the next time the timer runs. Turn the water on at the valve or timer before you leave the area.

Frequently Asked Questions

Can I replace a sprinkler head without turning off the water?

You can, but you will get soaked and will not be able to see the threads clearly to screw the new head on straight. Turning off the water takes thirty seconds and makes the job much easier. If you do not know where the valve is, look for a box in the ground near the controller or at the edge of your property.

What if the threads are stripped and the new head will not stay tight?

If the riser threads are damaged, you have two options. The easier one is to buy a threaded adapter that screws onto the damaged riser and gives you fresh threads for the new head. The harder one is to dig out the riser and replace it, which requires cutting the pipe below ground and gluing in a new riser — this is worth calling a professional for. A threaded adapter costs five to ten dollars and takes two minutes to install.

Do I need to buy the same brand as my old head?

No. Most sprinkler systems use standard threads, so a Hunter head works on a Rain Bird riser and vice versa. The only thing that matters is the spray pattern and the size — almost all residential heads are the same size. If you are unsure, bring the old head to the store and the staff will confirm it fits.

Why is water leaking from the base of the new head?

The threads are not tight enough, or the riser threads are dirty. Turn off the water, unscrew the head, and wipe the riser threads again with a dry cloth. Screw the head back on and tighten a bit more — use a wrench on the riser to hold it steady while you turn the head. If it still leaks, the riser threads may be damaged and you will need an adapter.

Can I replace a pop-up head with a stationary head or vice versa?

Yes, as long as the spray pattern matches what you need. A stationary head in a lawn looks odd but works fine. A pop-up head in a flower bed may stick up too high. Both use the same threads, so the swap is purely about what looks right and what works for your space.