Underwater swimming pool lighting installed and repaired across the Costa del Sol. LED upgrades from old halogen lamps, sealed lens replacement, dedicated 12V circuits.
LED retrofit upgradesHalogen replacementLens and seal repair12V dedicated circuit
Pool lighting on the Costa del Sol does two jobs. It makes the pool usable into the evening, when most coastal living happens, and it lets the household see the pool from the terrace at night so nobody walks into it after dark. Most pools built before about 2015 still have the original halogen lamps, which run hot, draw 100 to 300 watts each and need bulb changes every two to four years. LED retrofit lamps replace the halogen at one tenth of the power, last fifteen to twenty years and give a brighter, more even spread of light through the water. We retrofit LED units, replace failed seals and lenses, and pull fresh 12V circuits where the existing wiring is past its life. EnviroCare has been working on coastal swimming pools out of Mijas since 1996.
When to upgrade pool lighting
Six clear signs say the existing pool lights need attention. Any one of them is worth a survey on its own.
Lamp no longer turns on, with or without tripping the pool breaker
Water visible behind the lens (seal failure, the lamp will short if used)
Bulb has blown but the new lamp on the same fitting still does not work
Halogen lamps drawing 100 to 300 watts each and you want lower running cost
Single-colour white light and you want colour-change LED for evening atmosphere
Lamp body cracked or corroded after years of pool chemistry exposure
LED retrofit and the wiring question
Most coastal pools with halogen lighting can be retrofitted to LED without lifting the pool deck. The new LED unit drops into the existing niche, uses the same 12V transformer wiring (or a small in-line driver for higher-output LEDs) and seals against the pool wall with the same gasket interface. Where the niche or the cable run shows damage from age, salt chemistry or chemical exposure, we pull a fresh 12V cable from the pool plant room to the niche and replace the transformer at the same time. The new lamp typically lasts the lifetime of the next ten to fifteen years of pool ownership without further attention.
Common fault diagnosis
There are four common faults on Costa del Sol pool lighting and they show up in roughly the same proportions every year. Lens seal failure is the biggest, usually after eight to twelve years on the original gasket. Bulb failure is next, normally a halogen lamp that has reached the end of its service life. Cable failure further down the line on the 12V run from the transformer is third, often caused by a rodent chew, a poor original termination at the niche or a chemical leak through a broken seal. Transformer failure is fourth, sometimes after a storm-related surge. We diagnose all four on the same callout.
Safety, the boletin and the 12V supply
Spanish pool lighting runs on a 12V low-voltage supply from a transformer in the pool plant room. The 12V rule is the foundation of the safety case on underwater lighting: even with a damaged lamp or a wet niche, 12V cannot deliver a shock through pool water in the way a 230V supply could. The transformer itself sits on a dedicated circuit from the consumer unit with its own breaker and RCD. New pool-lighting circuits get added to the boletin de instalacion electrica when the pool is upgraded.
How the work runs
From first call to commissioned system
Step 1
Photo or site survey
Send a photo of the existing pool lamps and the pool plant room, or book a free site visit. We confirm the lamp type, the fault and the scope of work on the survey.
Step 2
Quote and lamp specification
We send a written quote covering the new lamps, the transformer or driver if changed, the cable run if replaced, and the labour figure. No deposit until you accept it.
Step 3
Drain or work-at-water-level
Lamp swaps on a pool that is full and clear can be done with the lamp lifted to the deck on its cable, without draining. Niche, cable or seal work usually needs the water dropped to below the niche level.
Step 4
Fit and seal test
The new lamp is fitted, the seal is tested with the lamp run for thirty minutes underwater to confirm no leakage, and the wider circuit is tested for insulation resistance back at the transformer.
Step 5
Three-year warranty
Every LED retrofit and seal replacement carries a three-year EnviroCare warranty on parts and labour.
Why EnviroCare
Local experience that matters on the job
Trading since 1996
Close to thirty years working on Costa del Sol pools. The team understands the niche standards, the cable routes and the typical failure modes across most original installs.
Diagnose before swap
Bulb failure looks the same as a tripped breaker or a failed transformer at the lamp end of the line. We diagnose first and quote for the actual fault, rather than swapping bulbs and finding the real problem on the next visit.
Registered electrician
Pool lighting work updates the boletin de instalacion electrica where new circuits or transformers are installed.
Three-year warranty
Every retrofit and seal replacement carries a three-year EnviroCare warranty on parts and labour.
Yes for almost every coastal pool. The new LED unit drops into the existing niche, uses the same 12V wiring (or a small in-line driver for higher-output LEDs) and seals against the pool wall with the same gasket interface. The new lamps draw one tenth the power and last fifteen to twenty years.
I changed the bulb but the light still does not work. What is wrong?
Three possibilities. The transformer in the pool plant room may have failed (test by reading 12V at the output terminals). The cable run between the transformer and the niche may have a break (test by reading 12V at the niche end). The niche connection itself may have corroded under chemistry exposure. We diagnose all three on the same callout.
I can see water behind the lens. Should I keep using the light?
No. Water behind the lens means the seal has failed and the next time the lamp is energised the live conductor will short to the niche body. Even on a 12V supply the lamp will not work and the seal failure progresses if left. Replace the lamp or the seal as a priority.
Do I need to drain the pool to change the lamp?
Not always. Lamp swaps on a pool that is full and clear can be done with the lamp lifted to the deck on its cable, without draining. Niche, cable or seal work usually needs the water dropped to below the niche level. We confirm what the job needs on the survey.
How much does an LED upgrade cost?
Most LED retrofits run as a one to two lamp swap that pays back within three to four summers on electricity savings alone.
Are coloured LED pool lights worth fitting?
Colour-change RGB LEDs are the modern default on new pool installs and pair with a wired controller in the pool plant room or a phone app. The colour modes are most-used in the first season after fitting and the white-only mode takes over for most regular evening use. We fit both single-colour white and colour-change RGB depending on owner preference.
Need help with pool lighting?
Tell us what you need and where the property is, and EnviroCare will advise on the right next step.
