Pool Lighting Buying Guide

Why Pool Lighting Matters

Good pool lighting extends the time you can use your pool safely after dark. It also adds to the overall look of your outdoor space. Whether you're replacing a faulty light or fitting out a new pool, choosing the right type of lighting makes a real difference to both function and appearance.

This guide covers the main types of pool lights available, the key factors to weigh up before buying, and what to keep in mind around installation.

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Types of Pool Lighting

LED Pool Lights

LED lights are now the most common choice for residential pools. They use significantly less energy than older halogen fittings and last considerably longer. Most LED pool lights are available in single white or colour-changing options, with some models allowing you to cycle through colours or set a fixed tone.

LED lights run cooler than halogen, which reduces wear on the fitting and surrounding components. They're available in a range of sizes to suit most standard niche fittings.

Halogen Pool Lights

Halogen lights were the standard for many years and are still found in older pools across Auckland. They produce a bright, warm white light but draw more power and generate more heat than LEDs. Replacement globes are still available, but if your halogen fitting needs replacing entirely, most pool owners take the opportunity to upgrade to LED at the same time.

Fibre Optic Pool Lighting

Fibre optic systems use a remote light source (the illuminator) to send light through flexible fibres to points around or inside the pool. Because there is no electrical component at the water end, they're sometimes used where electrical installation is particularly complex. The illuminator unit sits outside the pool and is the component that requires maintenance and eventual replacement.

Fibre optic systems tend to be less bright than LED and are less common in standard residential pools, but they suit certain design applications.

Above-Water and Feature Lighting

Not all pool lighting sits underwater. Spotlights, strip lighting, and feature lights positioned around the pool deck, coping, or landscaping can complement in-pool lights and improve visibility around the pool area at night. These are generally standard outdoor electrical fittings rather than pool-rated equipment, but placement still needs to account for splash zones and safety requirements.

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Key Factors to Consider Before Buying

Voltage: 12V vs 240V

Pool lights in New Zealand operate at either 12 volts (low voltage, via a transformer) or 240 volts (mains voltage). Most modern residential pool lights are 12V, which is the safer and more common option for in-pool use.

If you're replacing an existing light, the voltage of the new fitting needs to match your current setup, or the wiring and transformer need to be changed at the same time. This is work for a licensed electrician.

Niche Size and Compatibility

The niche is the housing built into the pool wall that holds the light fitting. Niches come in different sizes, and not every light fits every niche. Before purchasing a replacement light, check the niche size and the brand or model of your existing fitting if possible. Some LED retrofit kits are designed to fit into existing halogen niches without requiring the niche itself to be replaced, this can simplify the job considerably.

Colour Options

Single-colour white LED lights are straightforward and suit most pools. Colour-changing LED lights (often called RGB or multi-colour) allow you to adjust the mood of the pool at night. If you have multiple lights in one pool, it's worth choosing fittings from the same range so the colours synchronise properly.

Brightness and Beam Angle

The size of your pool affects how many lights you need and how bright each one should be. A larger pool may need multiple fittings to light the water evenly. Beam angle determines how wide the light spreads, a wider angle suits shallower pools, while a narrower angle may be better for deeper water.

IP and Underwater Rating

Pool lights must be rated for submersion. Look for fittings with an appropriate IP (Ingress Protection) rating for underwater use. Reputable pool light products will clearly state their submersion depth rating. Don't use a fitting that isn't rated for the depth at which it will be installed.

Energy Efficiency

If you run your pool lights regularly, energy consumption adds up. LED lights draw a fraction of the power of halogen equivalents for similar light output. Checking the wattage before purchasing is worthwhile, particularly if you're replacing multiple fittings.

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Installation: What You Can and Can't Do Yourself

What Homeowners Can Typically Do

In some cases, swapping a light globe or replacing a light fitting within an existing niche, where the wiring is already in place and no new electrical work is required, may be straightforward. However, this depends on the specific fitting, the pool type, and whether the pool needs to be drained to access the niche.

Always isolate the power to the pool light circuit before doing any work near the fitting, and confirm the power is off before touching any component.

What Requires a Licensed Electrician

Any work involving new wiring, moving or replacing a transformer, installing a new niche, or connecting to the mains supply must be carried out by a licensed electrician in New Zealand. This is a legal requirement, not just a recommendation.

If you're unsure whether your planned work crosses into licensed electrical territory, treat it as though it does and get a professional involved. Pool electrical faults are serious, water and electricity are a dangerous combination.

When to Involve a Pool Specialist

If the niche itself is damaged, if water is getting into the fitting, or if the light has failed repeatedly in a short period, there may be an underlying issue beyond the globe or fitting. A pool specialist can assess whether the niche seal is intact, whether the conduit is clear, and whether the installation is up to standard.

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Common Mistakes to Avoid

• Buying the wrong niche size. Measure or check the existing fitting before ordering a replacement.
• Mixing light brands across a multi-light pool. Colour synchronisation rarely works well across different brands.
• Ignoring a flickering or intermittent light. This can indicate a wiring issue or water ingress, worth investigating promptly.
• Assuming all LED retrofits are plug-and-play. Some require transformer upgrades or wiring changes.
• Skipping the IP rating check. A fitting not rated for submersion will fail quickly and may create a safety hazard.

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Maintaining Your Pool Lights

Pool lights generally require little day-to-day maintenance. Keep the following in mind:

• Check the lens and seal periodically for signs of discolouration, cracking, or water ingress inside the fitting.
• Clean the lens if algae or scale builds up on the surface, this reduces light output over time.
• Test the lights regularly so you notice a failure promptly rather than discovering it when you need them.
• Have a technician inspect the wiring and transformer as part of a broader pool service if the system is more than several years old.

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Getting Help in Auckland

Sparkling Pools has been servicing pools across Auckland since 1992. If you're unsure which light suits your pool, whether a fitting is compatible with your existing niche, or if you've noticed a problem with your current pool lighting, the team can help assess the situation and point you in the right direction.