You can change a shower head yourself with just an adjustable wrench and no plumbing experience

Replacing a shower head takes about 15 minutes and requires only an adjustable wrench or pliers — no special tools, no shutting off water, no mess. The old head unscrews by hand or with a wrench, you wrap the new threads with plumber's tape to prevent leaks, and you screw the new one on. The whole job costs between $20 and $100 depending on the shower head you choose, and you will not need to call a plumber.

The only real decision is whether you want a low-flow head (which saves water and money on your bill) or a standard one. Everything else — rainfall style, handheld, adjustable spray — is preference and does not change how you install it.

Key Takeaways

  • Turn off the water supply to your shower before you start, or at minimum turn the valve as far as it will go to reduce pressure.
  • Unscrew the old head by hand first; if it will not budge, wrap a cloth around it and use an adjustable wrench to avoid scratching the finish.
  • Wrap the threads of the new head with plumber's tape (also called PTFE tape or Teflon tape) in a clockwise direction to seal the connection and prevent drips.
  • Screw the new head on by hand until it is snug, then use the wrench for one final quarter-turn — over-tightening can crack the fitting or strip the threads.
  • Turn the water back on and check for leaks where the head meets the arm; if water drips, turn off the water and add another layer of tape.

What you need before you start

Gather these items before you touch anything: an adjustable wrench or a pair of pliers, plumber's tape (PTFE tape), a cloth or old towel, and your new shower head. Plumber's tape costs $3 to $5 at any hardware store and comes in a small roll that will last for dozens of repairs. Do not skip it — the tape is what stops water from leaking out where the head connects to the arm.

Check that your new shower head has the same thread size as your old one. Most shower heads in North America use standard 1/2-inch threads, but some older or specialty heads use different sizes. If you are not sure, bring the old head to the store and screw the new one on by hand to test the fit before you buy it.

How to remove the old shower head

Turn off the water supply to your shower if you know where the valve is. If you do not, turn the main water shutoff valve for the house, or simply turn the shower valve as far as it will go — this reduces pressure enough that you will not get sprayed when you unscrew the head. You do not need the water completely off for this job, but lower pressure makes it easier to work.

Grab the old shower head with your hand and turn it counterclockwise. Most heads unscrew easily by hand, especially if they have been on for a while and the connection is not tight. If it will not budge, wrap a cloth around the head to protect the finish, then use an adjustable wrench to turn it. Grip the arm (the pipe coming out of the wall) with your other hand or have someone hold it steady so you do not twist the plumbing inside the wall.

Once the head is off, you will see the threads on the end of the arm. Wipe away any old tape, mineral deposits, or debris with a cloth or paper towel. If there is a lot of buildup, soak the threads in white vinegar for a few minutes, then wipe again. Clean threads help the new head seal properly.

Wrapping the threads with plumber's tape

Plumber's tape (also called PTFE tape, Teflon tape, or thread seal tape) is a thin, white, stretchy plastic that wraps around the threads to create a watertight seal. It is not optional — without it, water will eventually drip from where the head connects to the arm.

Tear off about 3 to 4 inches of tape from the roll. Starting at the base of the threads (closest to the wall), wrap the tape around the threads in a clockwise direction — the same direction you will turn the new head on. Wrap it around two or three times, stretching it slightly as you go so it sticks to the threads and does not bunch up. The tape should cover all the threads but not be so thick that the new head will not screw on. If you wrap too much, the head will be hard to turn and you might crack the fitting.

Smooth the tape down with your finger so it adheres to the threads. It will feel slippery and slightly sticky at the same time — that is normal. The tape will compress and seal once you screw the new head on and tighten it.

Installing the new shower head

Hold the new shower head in your hand and line up the threads with the threads on the arm. Start screwing it on by hand, turning clockwise. It should turn smoothly at first. Keep turning until you feel resistance — this means the threads are fully engaged and the tape is starting to compress.

Once you feel resistance, use the adjustable wrench to turn the head one more quarter-turn (90 degrees). Do not over-tighten. A common mistake is cranking the wrench hard to make sure it does not leak — this actually increases the risk of cracking the fitting or stripping the threads, which makes the leak worse. One firm quarter-turn is enough.

If the head has a decorative collar or escutcheon (the ring that covers the hole in the wall), make sure it is positioned the way you want it before you tighten. Once the head is tight, the collar is locked in place and you cannot adjust it without loosening the whole connection again.

Testing for leaks and troubleshooting

Turn the water back on slowly. Let it run for 30 seconds and watch where the shower head connects to the arm. If water drips or runs down the arm, turn the water off and add another layer of plumber's tape. Unscrew the head by hand (you do not need the wrench), wrap 2 to 3 more layers of tape around the threads, and screw it back on. Tighten with the wrench and test again.

If water leaks from inside the head itself (from the spray holes), the problem is not the connection — it is either a defect in the head or debris inside the line. Turn off the water, unscrew the head, and look inside the arm for debris. If you see anything, flush it out by turning the water back on briefly and letting it spray out. Then reinstall the head.

If the head leaks after you have added tape twice, the threads on the arm may be damaged. In that case, you will need a plumber to replace the arm fitting, which requires opening the wall. This is rare and usually only happens if the old head was over-tightened or left on for decades.

Choosing between low-flow and standard shower heads

Low-flow shower heads restrict water to 2 gallons per minute (GPM) or less, compared to 2.5 GPM or higher for standard heads. Federal law requires all new shower heads sold in the United States to be 2.5 GPM or less, so the difference between "low-flow" and "standard" is smaller than it used to be. Low-flow heads cost about the same as standard ones but reduce your water heating bill over time.

The trade-off is pressure. A low-flow head will feel less forceful than a standard one, though most people adjust to it within a week. If you have low water pressure in your home already, a low-flow head may feel weak. If you have strong pressure, you probably will not notice the difference. Test one in a store if you can, or read reviews from people in your area — water pressure varies by neighborhood.

Frequently Asked Questions

Do I have to turn off the water before I change the shower head?

No, but you should reduce the pressure by turning the shower valve as far as it will go. This prevents water from spraying out when you unscrew the old head. If you know where the water shutoff valve is, turning it off completely makes the job cleaner and easier, but it is not required.

What if plumber's tape does not stop the leak?

Add another layer of tape. Most leaks at the connection point are fixed by wrapping the threads two or three times. If leaking continues after three layers, the threads may be damaged or the head may be defective. Try a different shower head, or contact a plumber if the problem persists.

Can I use the old shower head again if I change my mind?

Yes, as long as you did not damage the threads when you removed it. Keep the old head in a cabinet. If you want to reinstall it later, wrap the threads with fresh plumber's tape and screw it back on the same way you installed the new one.

How tight should I turn the wrench?

Turn it until you feel firm resistance, then do one more quarter-turn. You should not need to strain or use all your strength. If the head is hard to turn, you have already tightened it enough. Over-tightening is the most common cause of cracked fittings and stripped threads.

Will a low-flow shower head work with my water heater?

Yes. Low-flow heads actually work better with most water heaters because they use less hot water and the temperature stays more consistent. If you have an older tankless water heater, check the manufacturer's minimum flow rate — some require at least 0.5 GPM to activate, and a very restrictive head might not trigger it.