Inground Swimming Pool Lights | Royal Swimming Pools

Inground swimming pool lights come in LED and incandescent fixtures, in 12V and 120V, and the right one depends on your existing niche as much as on brightness or color. This collection covers complete fixtures alongside the niches and transformers needed to install them, plus the replacement parts that keep an older light working. Pool lighting is frequently planned alongside control and automation systems to simplify scheduling and operation. Many pool owners also coordinate lighting with water features to create a balanced nighttime pool environment. If your pool is above ground, see above ground pool lights and fountains instead.

+ Read More

About Pool Lights for Inground Pools

White, Color Changing, and Brightness Options

Pool lights are sold in fixed white and color changing versions, and the choice affects both price and how the pool reads after dark. A white fixture gives the cleanest view of the pool floor and is usually the practical choice where visibility is the main goal. Color changing fixtures hold a set of fixed colors and run preset light shows, with brightness and transition speed generally adjustable. Brightness is worth checking alongside color, since a large pool or a dark liner absorbs far more light than a small pool with a pale finish.

Fixture, Niche, and Transformer Options

Inground pool lights are available in different fixture styles, voltage options, and replacement formats depending on the pool's existing setup. Some lights are designed for traditional niches, while others work with retrofit applications, transformers, or control systems. Pool lights are typically available in either 12V or 120V, and many local codes specify which voltage is required for residential installations. A 12V fixture needs a transformer to step down standard household power, while a 120V fixture connects more directly. Measure the run to your junction box before ordering, since a cord that is too short cannot be extended. For pools with a saltwater chlorine generator, a plastic face ring is generally recommended over stainless steel, since it holds up better against salt over time.

Placement, Controls, and Long-Term Performance

Pool light placement is usually planned around pool size, shape, depth, and the areas that need the most visibility. Lights are often positioned to shine away from the house or main seating areas, which reduces glare for anyone sitting outside while still illuminating the largest usable area of the pool. Curved layouts, L shapes, and separate deep ends need more care to avoid shadows. Many pool owners also coordinate lighting with automation, timers, or water features for easier operation and a more balanced nighttime pool design.

Replacement bulbs, gaskets, face rings, and lock screws are listed with the fixtures above, and niches and transformers are grouped separately.

Inground Pool Lights FAQ

How many pool lights do I need?

As a general guideline, one light is typically enough to illuminate a pool up to about 30 feet in length. Pools longer than that usually benefit from two, placed either at each end or on opposite sides, to give even coverage and avoid dark spots. Shape matters as well, since curved layouts, L shapes, and separate deep ends can cast shadows a single fixture will not reach.

What is the difference between white and color changing pool lights?

A white fixture gives the clearest view of the pool floor and is usually the practical choice when visibility is the main goal. Color changing fixtures hold a set of fixed colors and run preset light shows, with brightness and transition speed generally adjustable. Color changing models cost more and earn it if you use the pool for entertaining. Both are widely available in LED.

Will any pool light fit my existing niche?

Not always, and this is the most common compatibility problem. Niches vary by manufacturer and by size, so a fixture built around one brand's niche may not seat correctly in another. Check the niche brand, the hole pattern, and the fixture depth before ordering. Confirm the cord length as well, since a cord that falls short of the junction box cannot be extended.

Can you add lights to an inground pool?

Yes, lights can often be added to an existing inground pool, though the right option depends on the pool structure, available wiring, existing niche, and electrical setup. Pools built without a niche are the harder case, since fitting a traditional fixture means running conduit under the deck and cutting into the pool wall. Retrofit and surface mounted fixtures exist for exactly this situation.

Can I change my inground pool light without draining the pool?

In many cases yes. Niche mounted fixtures are usually designed so the light can be lifted above the waterline for service with the cord still connected through the conduit, which means the pool does not need draining. Because the work involves electricity near water, bonding, grounding, and GFCI protection all matter, so use a licensed electrician or qualified pool professional.

How much does it cost to replace an inground pool light?

It varies with fixture type, voltage, cord length, niche compatibility, labor, and whether additional electrical work is needed. Replacing a bulb in an existing fixture sits at the low end. A full fixture swap costs more, and upgrading from incandescent to LED or adding a transformer or automation connection raises it further. Decide which of those three you are doing before pricing.

How long do inground pool lights last?

It depends on the light type, how often it runs, water conditions, and fixture quality. LED fixtures generally last far longer than incandescent or halogen bulbs, which is the main reason most replacements now go to LED. Keeping water balanced and addressing leaks or fixture issues early both extend service life. A failing seal usually shows up as moisture inside the lens.