Replacing a pool light costs about $625 per light. If you only need to replace the light bulb, plan on paying about $20 to $100 per light. The largest cost factors include the type of pool light, the number of pool lights needed, and the labor costs in your location. But additional cost factors include work required on existing wiring, other repairs, and the continual maintenance needed to keep your pool light in good working condition after installation.

Local building codes typically require conduit around exterior wiring. Conduit protects the wire from moisture, extreme temperatures, sun exposure, and harsh weather conditions to prolong its lifespan. When a wire is worn out, it can be dangerous as the risk of electric shock or fire increases.

Modern outdoor light fixtures are waterproof and weather resistant, and, provided they’re installed correctly and by a professional, the fixture and wiring can last for 20 to 30 years or more. The lifespan will depend largely on the quality of the fixture. The lifespan of the bulb will depend on the type of light you install:

• CFL bulb (for sustained use): 15,000 hours

• Halogen bulb (mostly for security): 2,000 hours

• HID bulbs (for security): 12,000 hours

• Incandescent bulb: 1,000 hours

• LED bulb: 50,000 hours

To maintain your outdoor lighting and prevent major issues, you should regularly clean the fixtures, inspect the wiring and connections, and replace worn or burnt-out bulbs promptly. These simple steps ensure consistent operation and extend the life of your lighting system.