What You Need Before You Start

Replacing a shower head is a job you can do yourself without calling a plumber. You need the new shower head, an adjustable wrench or pipe wrench, and a cloth or rag. That's it. The whole job takes about 15 minutes, and the only thing that can go wrong is stripping the threads on the connector — which is hard to do and fixable even if it happens.

Before you buy a new shower head, check what kind of connection your current one has. Most shower heads screw onto a threaded pipe that sticks out of the wall. Some older installations use a different connection, but the threaded type is standard in nearly all homes built in the last 40 years. If you're not sure, take a photo of the connection and show it to someone at a hardware store.

New shower heads cost between $15 and $150 depending on features. A basic model works fine. Make sure the new head has the same thread size as the old one — this is almost always half-inch NPT (National Pipe Thread), which is the standard. The box will say if it's different.

Key Takeaways

  • Turn off the water before you start, or at least turn it to a trickle, so you don't spray yourself or flood the bathroom.
  • Use a wrench to grip the connector nut just below the shower head, not the head itself, so you don't crack the plastic or chrome.
  • Wrap the old connector with plumber's tape (also called thread seal tape or Teflon tape) before screwing on the new head to prevent leaks.
  • Hand-tighten the new head first, then use the wrench for one more quarter-turn — over-tightening can crack the new head or strip the threads.
  • If water leaks from the connection after you're done, turn off the water and tighten another quarter-turn with the wrench.

Removing the Old Shower Head

Turn off the water at the main valve or at the shower valve if your shower has an individual shutoff. If you can't find either, turn the water on and let it run for a few seconds, then turn it off — this empties the pipe so you won't get sprayed. If the pipe is still dripping after a minute, that's normal; it will stop once you loosen the head.

Locate the connector nut — the part where the shower head screws onto the pipe. This is usually a hexagonal (six-sided) nut just below the head itself. Wrap your cloth around the nut to protect the finish, then grip it firmly with the wrench. Turn the wrench counterclockwise (toward you on the right side, away from you on the left side) until the head unscrews. You may need to hold the pipe with your other hand so it doesn't spin inside the wall.

Once the head is loose, unscrew it by hand the rest of the way. Some water will drip out — this is normal. Let it drip into a towel or bucket for a few seconds, then wipe the pipe threads clean with a dry cloth. Look at the old threads to see what condition they're in. If they look corroded or damaged, you may need plumber's tape or pipe dope (a thick sealant) on the new head.

Preparing the Pipe and Installing the New Head

Wrap the pipe threads with plumber's tape. This is a thin white tape that prevents leaks. Tear off a piece about 12 inches long, then wrap it around the threads clockwise (the same direction the head will screw on) three to four times. Smooth it down as you go so it doesn't bunch up. This step is not optional — it's what stops water from leaking out of the connection.

Screw the new shower head onto the pipe by hand first. Turn it clockwise until it's snug but not tight. You should be able to turn it with your fingers without straining. Once it's hand-tight, use the wrench to turn it one more quarter-turn (90 degrees). This is enough to seal it without over-tightening. Over-tightening can crack plastic heads or strip the threads, and you'll have to start over.

Turn the water back on slowly and check the connection for leaks. If water drips from where the head meets the pipe, turn the water off and use the wrench to tighten another quarter-turn. Wait a few seconds and check again. Most leaks stop after one or two additional quarter-turns. If water still leaks after three quarter-turns total, turn off the water, unscrew the head, add more plumber's tape, and try again.

Testing and Adjusting

Once the head is installed and not leaking, turn the water on fully and test the spray pattern. Most shower heads have a dial or lever on the head itself that changes the spray — from a wide rain pattern to a narrow jet. Adjust it to what you like. Some heads also have a flow restrictor that you can remove if you want more water pressure, though this uses more water and may not be allowed in your area depending on local codes.

Check the connection one more time after the water has run for 30 seconds. If it's still dry, you're done. If a small drip appears, it may stop on its own as the tape settles. Wait another minute and check again. If it's still dripping, tighten another quarter-turn.

What to Do If Something Goes Wrong

If the old head won't unscrew, spray the connector nut with penetrating oil (like WD-40) and wait 15 minutes. Then try again with the wrench. If it still won't budge, wrap a longer cloth around the nut for better grip and try once more. Do not force it — if you strip the threads, you'll need a plumber to fix it.

If you accidentally crack the new plastic head while tightening, you'll need to buy another one. This is why the quarter-turn rule matters. If you strip the threads on the pipe itself (you'll hear a grinding sound and the head will spin without tightening), you can still fix it: unscrew the head, wrap extra plumber's tape around the threads, and try again. If that doesn't work, a plumber can install a threaded adapter to restore the connection.

If water leaks from inside the wall after installation, the problem is likely in the valve or the pipe connection inside the wall, not the shower head. This is rare and requires a plumber to diagnose.

Frequently Asked Questions

Do I need a special wrench or will any wrench work?

Any adjustable wrench or pipe wrench works. An adjustable wrench is easier to use if you only have one. The wrench just needs to grip the hexagonal nut firmly without slipping. Avoid using pliers — they can slip and damage the nut's finish.

What is plumber's tape and where do I buy it?

Plumber's tape (also called thread seal tape or Teflon tape) is a thin white tape that wraps around pipe threads to prevent leaks. It costs $2 to $4 and is sold at any hardware store, home center, or online. It comes in a small roll and lasts for many projects.

Can I install a new shower head if my pipes are old or corroded?

Yes, as long as the threads aren't severely damaged. Wrap extra plumber's tape around corroded threads — two or three extra wraps — to fill gaps and create a better seal. If the threads are so damaged that the head won't stay tight, a plumber can install an adapter or replace the pipe stub.

Will a new shower head reduce my water bill?

Modern shower heads use less water than older ones because of federal flow limits, so switching from a very old head may reduce water use slightly. The difference is usually small — a few dollars per year. If water savings are your goal, look for a head labeled as low-flow when you buy.

What if water leaks from the wall after I install the new head?

This means the leak is inside the wall, not at the connection you just made. Turn off the water and call a plumber. Do not try to fix this yourself — it requires opening the wall to access the pipes inside.