Pool Lighting Upgrade Guide: LED Lights, Costs, and Installation

If your pool still has the original incandescent light fixture from 10–20 years ago, replacing it with an LED is one of the most cost-effective upgrades available. The energy savings alone typically pay back the investment in 2–4 years, and modern color-changing LEDs transform a pool's nighttime appearance entirely.

Pool Light Types

Type	Technology	Wattage	Lifespan	Color Options
Incandescent	Traditional bulb	300–500W	1,000–5,000 hours	White only (most)
Halogen	Halogen bulb	100–500W	2,000–6,000 hours	White, limited color filters
LED	Light-emitting diode	12–100W	30,000–50,000 hours	Full color-changing capability
Fiber optic	Light piped via fiber cables	Variable (illuminator)	25,000+ hours (illuminator)	Color wheel options

A 500-watt incandescent pool light running 5 hours per night costs about $9/month at $0.12/kWh. A 50-watt LED replacement costs about $0.90/month for the same hours — $97/year in savings per light. Over a 30,000-hour LED lifespan, the energy savings exceed the purchase price many times over.

LED Pool Light Brands and Options

The dominant LED pool light brands in the US:

Pentair IntelliBrite: One of the most popular choices. Available in 5G (5-color) and color-changing versions. Compatible with Pentair automation systems. 12V and 120V versions available. MSRP: $400–$700 for the fixture.
Hayward ColorLogic: Hayward's equivalent — full RGB color-changing with solid colors and light shows. Compatible with Hayward automation. Similar price range.
Jandy WaterColors: Jandy's offering, integrates with iAquaLink automation. Similar capability to the above.
Generic/third-party LED retrofits: Several brands make LED bulbs and fixtures that fit existing niche sizes. Dramatically cheaper ($80–$200) but lack the smart/automation features and often have shorter warranties.

If you have a pool automation system (Pentair EasyTouch, Hayward OmniLogic, etc.), buying the matching brand's LED fixtures allows full control from the app — turn lights on/off, change colors, set schedules. Third-party fixtures will work for basic on/off via automation but lose the color control integration.

12V vs. 120V Pool Lights

This distinction matters for the upgrade path:

12V lights run on low-voltage power through a transformer at the equipment pad. They're inherently safer — even if the fixture seal fails, the shock risk from 12V is minimal. Most new pool construction uses 12V systems.

120V lights are older and run on standard line voltage. A failed seal on a 120V light with a cracked housing can electrify the pool water — this has caused fatalities. If you have 120V incandescent lights, replacing them with LEDs (or converting to 12V) is both an energy upgrade and a safety upgrade. Pool electricians take pool bonding and grounding very seriously precisely because of this risk.

Converting from 120V to 12V requires running new wiring from the light niche to the equipment pad for a transformer — this is an electrical job that should be permitted and inspected.

The LED Retrofit Process

The most common scenario: you have an older incandescent or halogen fixture and want to drop in an LED replacement. The good news is that LED manufacturers have designed their products to fit common pool light niche sizes (most commonly 1.5" or 1" conduit entry). If the new fixture fits the existing niche, this is a straightforward task.

Steps for a Direct LED Retrofit

Turn off power at the breaker — not just the timer or switch. Pool light circuits carry real electrocution risk. Confirm power is off with a non-contact voltage tester.
Remove the old fixture. The light niche has a single stainless steel screw at the top of the rim (sometimes called a face ring). Remove the screw and pull the fixture forward — there's typically 8–15 feet of cord coiled in the niche behind the light, enough to pull the fixture up to the pool deck without draining.
Open the fixture and disconnect the wires. Note wire colors and connections, or photograph the wiring before disconnecting.
Install the new LED fixture. Connect wires per the new fixture's wiring diagram. Most use the same wire colors (black=hot, white=neutral, green=ground). Ensure all connections are watertight.
Test before replacing in the niche. Restore power briefly to confirm the light works. Turn power off again.
Coil excess cord and seat the fixture in the niche. The cord coils behind the fixture in the niche. Replace the face ring screw.

If you're uncomfortable with electrical work, this is one project where hiring an electrician or pool tech is reasonable — the stakes of a wiring mistake in a pool are higher than most household electrical jobs. A professional installation runs $150–$350 in labor.

Adding Lights to a Pool That Has None (or Adding More)

Retrofitting lights into an existing pool that wasn't built with them, or adding additional niche locations, is a larger project:

A new light niche requires drilling through the pool shell — possible in concrete, difficult in vinyl and fiberglass without risk of structural damage
Conduit must be run from the niche back to the equipment pad
Electrical work must be done by a licensed electrician and inspected
Pool must be partially or fully drained for the niche installation

Total cost for adding a new pool light (not retrofitting): $1,500–$4,000 per light location, depending on excavation and conduit run requirements.

Fiber Optic Lighting

Fiber optic pool lighting uses a remote illuminator (containing the light source) to pipe light through fiber optic cables to points in and around the pool. Because no electricity runs to the pool fixtures themselves — only fiber cables — it's extremely safe.

Fiber optic systems fell out of favor with the rise of high-performance LEDs, but they're still used for:

Star fields in pool floors or walls (tiny fiber ends embedded in plaster creating a starry effect)
Waterline features and decorative lighting around the pool perimeter
Spa and indoor pool applications where electrical safety is paramount

Fiber systems cost more to install than LED ($2,000–$8,000+ for a full installation) and require illuminator replacement periodically, but they offer design options that LED fixtures don't.

Landscape and Deck Lighting

Pool lighting often extends beyond the pool itself — the surrounding landscape, steps, and deck significantly affect how the overall space looks and feels at night. Low-voltage LED landscape lighting (12V systems powered by a timer-controlled transformer) can be installed around the pool perimeter by homeowners. Costs:

LED path/step lights: $15–$60 per fixture
LED spotlights for plants/features: $20–$80 per fixture
Transformer: $100–$300 for a quality unit
Professional landscape lighting installation: $500–$3,000+ depending on scope

For help finding pool service and electrical contractors in your area, search poolservicemap.com. For broader pool equipment questions, see our pool equipment repair guide. If you're planning a larger pool renovation, the pool resurfacing guide covers surface options that pair well with a lighting upgrade.