Guide
Switching pool lights from halogen to LED
Published 10 November 2026 · 3 min read · Crystal Clear Contractor
Switching pool lights from halogen to LED means lamps that use less energy, last far longer, come on instantly at full brightness and sit in a slimmer fitting. The usual time to switch is when the existing halogen lamps start to fail, and the pool typically does not need to be drained to replace them.
What changes with LED?
| What changes | Halogen | LED |
|---|---|---|
| Energy use | Higher | Lower |
| Lamp life | Shorter | Far longer |
| The fitting | A lamp behind a large lens | A slim fitting |
A longer lamp life also means fewer lamp changes over the years.
When does it make sense to switch?
The usual time is when the existing halogen lamps start failing, since each replacement is a chance to change to LED. A pool that is being resurfaced or overhauled is another good time, because the lights can be changed during the same works.
How are the new lights fitted?
The existing fittings and cabling are checked first, so the new lamps suit what is already in the pool wall. Each new fitting is tested before the pool is handed back.
Common questions
Does the pool need to be drained to change the lights?
Typically, no. The lamps can be replaced with the pool full.
Can LED lights be fitted to an older pool?
Usually, yes. The existing fittings are checked first to see how the new lamps will go in.
Is it safe to change pool lights yourself?
Underwater lights combine water and electricity, so replacing them is a job for a trained technician.
Underwater LED lighting is part of our repair work: we supply the lamps, fit them and replace them. See repair, replacement and overhaul.
This guide was published on 10 November 2026 and reflects our understanding of good practice at that time. Equipment and practices change, and every facility is different. Always check with a qualified professional before acting on anything here.
