How To Change The Light Bulb in The Pool

Who doesn’t love a nice late night swim? Your pool’s light is the unsung hero of the late night swim, giving you the light you need to enjoy your pool whenever you want, day or night.

Change Bulb Pool Swimming.jpg

Of course, a pool light that is lived its life and burned out won’t help you very much at all. Now, while you could call in the professionals to help you out, we believe that this is one repair that anyone can do themselves. To help you all out, we have put together this guide on how to change the light bulb in the pool so you can replace your light yourself with the need for outside assistance.

What You Will Need

Before you get started, go ahead and take a few minutes to gather up the materials you will need in order to get the job done right the first time. Changing a pool light, while more complicated than a standard light bulb in a lamp, is still a rather easy procedure than almost anyone can do themselves. It requires only a few very basic tools to get the job done. They are:

  • Philips and Flat Head Screwdriver
  • Circuit Tester
  • Two Dry Towels
  • Replacement Pool Light Bulb
  • Replacement Lens Gasket

Once you have gathered the materials you need, it is time to begin the replacement process.

Tips Before You Begin

Before you get started, take a look at a few of these tips that will help make the process easier and even safer.

  • Remember to cut off all the power to your pool before you begin.
  • You may have to drain the pool a little to be able to comfortably reach the light.
  • Try to determine the type of light you need before you begin. If you can’t, you may have to remove the light and then take it with you to find the correct replacement.
  • If you are not sure that the power has been probably shut off, be sure you test the electrical with your circuit tester before you continue.
  • Make sure there is a GFCI installed and working properly.

NOTE: We would highly recommend hiring a professional for this task since it involves both water and electricity.

Change the Light Bulb

Now we are ready to begin the light bulb changing procedure. Make sure you follow each one of these instructions carefully and do not skip a step. If you do, you could damage the new light in your pool or even put yourself at risk.

Step 1: Shut Off the Power

Remember, you will be messing with wires when changing a light bulb, and electrical wires and water really don’t mix very well. Before you begin to disassemble your old light, check and then double and then triple check to make sure there is no power reaching your pool area.

Step 2: Remove the Pool Light from its Casing

To remove the pool light from the casing, you will need to remove a single pilot screw that is most often found at the top of the light.

Step 3: Pry Out the Fixture

Once the screw is removed, pry out the light from its fixture. In most cases you will find that you will have plenty of extra cord to be able to remove it from the pool and place it on your deck. Set the light down on one of your towels so you don’t scratch the lens.

Step 4: Remove the Face Ring, Lens Gasket and Lens

Most fixtures are assembled using a series of screws or sometimes clamps. All of these must be removed and the various parts disassembled in order to reach the light bulb. It is possible that it could have become corroded with time to be careful when taking the light apart. Clean away any dirt or other residue left behind with your towel.

Step 5: Remove the Light Bulb

Using a towel to grip the bulb, slowly and carefully unscrew it. Once removed, dry the inside of the light fixture and clean it with your towel.

Step 6: Add the new Light Bulb

Screw in the replacement bulb carefully. Make sure it is tight but be careful not to tighten it too much. Install the new lens gasket around the lens and then reassemble the lamp fixture.

Step 7: Check the Light

Before you place it back in its place under water, quickly turn on the power and make sure the light will come on. Do this quickly as these lights aren’t designed to function out of water for very long periods of time.

Step 8: Check for Leaks

Place the light underwater and make sure that air is not coming from the sealed outer edges of the light.

Step 9: Return the Light to Its Proper Location

Replace the light fixture back into position making sure to replace the excess cord exactly as you found it. Double check to make sure the screw holes line up exactly and then replace the screws.

Step 10: Switch on Your Electricity

Now that the fixture with the new bulb is in place, switch your power back on to your pool and start enjoying those late night swims once again.


As you can see, changing a pool light isn’t as difficult as it may seem at first glance. In fact, almost anyone can do it. All you need is the right type of replacement bulb and the right tools for the job.

If your pool light has burned out and you want to be able to enjoy swimming once the sun goes down at night, then follow this easy step by step guide to changing the light in the pool. With only a few minutes of your time, you will be able to start enjoying your pool day and night as it was meant to be.



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