Walk into any big-box hardware store and you'll find two types of outdoor lighting: line-voltage (120V, same as your household outlets) and low-voltage (12V, fed by a transformer). Both will light up your yard. Only one of them makes sense for a Florida landscape.

What is low-voltage landscape lighting?

Low-voltage systems run on 12 volts DC, stepped down from your household current by a transformer mounted near your main panel or on an exterior wall. From that transformer, insulated cable runs to each fixture in the ground.

The voltage is low enough that direct contact with the cable, even a cut or nick, doesn't present a shock hazard to people or pets. That matters in a state where afternoon thunderstorms are daily events and the ground is frequently wet.

Why low-voltage wins in Florida

Safety in rain and humidity. Central Florida averages 54 inches of rain per year, with afternoon storms nearly every day from June through September. Low-voltage systems are designed to operate safely in wet conditions. Line-voltage outdoor lighting requires more careful weatherproofing and presents a genuine shock hazard if connections degrade, which they do, faster than you'd expect in Florida's humidity.

Energy efficiency. Low-voltage LED fixtures use 80–90% less electricity than halogen or line-voltage alternatives. A 30-fixture system running 6 hours per night might draw $15–$25 per month on your electric bill. A comparable line-voltage system could cost $80–$120 per month.

Heat performance. Halogen line-voltage fixtures run extremely hot (200–400°F at the lamp. In a Florida summer with ambient temperatures already above 90°F, that heat accelerates fixture degradation and dries out the surrounding soil. Low-voltage LED fixtures typically run below 100°F and hold up significantly better in the heat.

Flexibility and expansion. Adding a zone or expanding your system in a low-voltage setup is a same-day task. In a line-voltage system, it's a licensed electrical job requiring permits and inspection in most Florida municipalities. Low-voltage lets your lighting evolve as your landscape does.

The LED difference

Modern low-voltage systems pair 12V transformers with LED fixtures, and the combination is dramatically better than halogen systems most homeowners grew up with:

  • LED color temperature is stable throughout the fixture's life. Halogen shifts warmer as bulbs age.
  • LED lasts 25,000–50,000 hours. A halogen bulb: 2,000–4,000 hours.
  • LED produces a crisper, more directional beam that's better for architectural uplighting.
  • LED's lower heat output means the fixtures don't burn the mulch or soil around them, relevant in Florida's dry season.

What to ask any lighting contractor

Before booking an installation, ask any outdoor lighting contractor these questions:

  1. Are you installing 12V low-voltage or line-voltage fixtures? (You want 12V.)
  2. Are the fixtures brass, copper, or composite? Or aluminum? (You want brass or composite in Florida.)
  3. How deep are cable runs buried? (6 inches minimum; 8–10 in high-traffic areas.)
  4. Do you aim fixtures in daylight or after dark? (After dark is the only correct answer.)

Any contractor who can't answer these directly, or who answers them evasively, is telling you something important.