Pool Light Replacement in Lake Havasu City, AZ

Six steps, and none of them involve draining the pool. A wet-niche light comes out of the wall on its cord and sits on the deck while we work on it.

Before we order anything, we find out why the light is dark. When a tripped GFCI resets and holds, the bulb is the likely culprit. If it trips again within seconds, there is water in the fixture or a damaged cord. When the breaker holds with the light off and trips the moment it switches on, the fixture has a short. Flicker, or a dim half-ring, means an LED driver on its way out. And water visible behind the lens settles it. That fixture is a replacement no matter what else tests fine. Water inside a sealed light never dries out.

Two ways to go LED. A retrofit LED bulb screws into the old incandescent fixture and costs the least. It only makes sense when the housing, lens, gasket and cord are all sound. A full LED fixture replaces the whole light on its cord and drops into the existing niche. It arrives sealed from the factory with a new lens and gasket.

In Havasu the full fixture wins most of the time. A 20-year-old housing with a new bulb in it still has a 20-year-old gasket. The Department of Energy puts LED savings at 75 percent or more over incandescent, with a life up to 25 times longer. On a pool light that runs every summer evening, that means a decade without a bulb change instead of one every two years.

Pool lights come in two voltages. A 120-volt light runs straight off the house circuit. Anything over 15 volts in the water needs a GFCI, so this one does. A 12-volt light runs through a transformer in the junction box. The voltage in the water is then too low for a fault to deliver a dangerous shock. Most new LED pool lights are 12-volt for that reason. When we replace a 120-volt light, we usually recommend a move to 12-volt with a transformer. That goes double on older Havasu pools. The transformer sits in or next to the deck junction box, bonded like everything else on the pad.

A wet niche is a metal or plastic cup set in the pool wall that floods with water, and the light sits inside it. The cord runs from the fixture through a conduit to a junction box on the deck. That box has to sit above the water line and above the deck, so the conduit drains away from it. The cord has to reach the deck with the fixture attached. That is how a light gets changed without draining the pool.

Sometimes the old cord is too short, or the conduit is cracked and holding water. Then the job changes. We can usually pull a new cord through a sound conduit. A crushed conduit means a repair, or a fixture that mounts in the niche with a shortened cord and a sealed connection.

Here a pool light differs from every other light in the house. The niche ring, the fixture and the transformer all bond to the pool’s equipotential grid. That stops a fault from putting a voltage difference between the light ring and a ladder or handrail. The circuit runs through a GFCI that trips at about 5 milliamps.

Pools built more than 30 years ago often have no GFCI on the lighting circuit at all, and Havasu has a lot of pools from that era. When we find one, the GFCI goes in as part of the replacement. The power goes off at the breaker before the first screw comes out. It stays off until the light sits sealed in the niche again.

With the new fixture on the deck, we feed the cord through the conduit and make the connection in the junction box. The fixture then goes back in the niche with a new gasket and the retaining screw. We power it up and test the GFCI with its test button and with a plug tester. A color-changing LED syncs to its controller or automation system. We show you the sequence for changing modes, because every brand does it differently. Then we write the fixture model and the voltage on the pad.

One last check before we pack up: the light runs for twenty minutes while we watch the lens for fog. A fixture that seals badly shows it in the first half hour as the warm air inside meets cool water. Catching that on the deck beats finding it on a GFCI trip in August.

A bulb is the answer when the GFCI holds, the lens is dry inside, the gasket is soft and the cord is undamaged. Everything else calls for a fixture. That list includes water behind the lens, a gasket gone hard or flat, and a cracked lens. A cord with a nick or a swollen spot and a corroded niche ring are on it too. It also includes any 120-volt fixture on a circuit with no GFCI. An LED fixture that has lost a color or a segment joins the list too. Its driver sits sealed inside and cannot be serviced.

Age is the other signal. A fixture past 15 Havasu summers has a gasket that has been through 15 cycles of hot water and cold. Its lens carries 15 years of calcium and UV. Replacing the fixture before it leaks costs less. After a leak, water has tripped the GFCI a dozen times and corroded the junction box. When the problem turns out to sit in the panel or the pool’s wiring rather than the light, that is on our pool repairs page.

Three reasons, and they all start with heat. Pool water here sits above 85 degrees for four months. A sealed fixture running in warm water runs hotter still. Gaskets harden faster. LED drivers are electronics in a sealed can, and they age with every degree. The deck junction box bakes in direct sun. The splices inside loosen and corrode as the box swings from 140 degrees at noon to 60 at night.

Calcium is the second. Havasu water builds scale on the lens and the niche ring. Scale on a niche ring is what stops the bonding connection from doing its job. Part of every light replacement is cleaning the ring back to bare metal before the new fixture goes in. On a salt pool the ring gets a second look, because salt water speeds up corrosion on any metal that is not bonded well.

Monsoon water is the third. A conduit that stayed dry for ten years fills in one August storm. When the junction box sits low, the water finds the splices. We set every box we touch above the deck and above the water line, and we check that the conduit drains before the new light goes in. A bead of sealant where the conduit enters the box keeps the next storm out as well.

The same insured JM Pool Service tech who services your pool on the weekly route. One person who knows the niche, the junction box and the breaker before writing the quote. They share a pad with the pump, after all. When a bulb and a gasket will do, you hear that. If the fixture or the circuit is the problem, you get a quote with the voltage, the fixture model and the GFCI status on it. When the fault runs past the pool wiring into the house panel, we say so. An electrician takes that part. The rest of the pad is on our pool equipment installations page.

Our pool light replacement covers Lake Havasu City and about fifteen miles around it. That means the Island District, Downtown, Southside, Southgate, Acoma and Kiowa-Amberwood. It also means Vista Del Sol, Village Parc, the Medical District, the Refuge, North Pointe and out toward the Foothills. If you searched “pool light replacement near me” from anywhere in Havasu, this is the route. The full list is on our pool service area page.

Light replacement is one part of our pool equipment installations work. Weekly pool service checks that the light works and the GFCI holds on every visit. Spa lights are on our spa repair page.