LED string lights generally use less electricity and produce less heat than comparable incandescent sets, while incandescent bulbs create a familiar warm point of light. The exact wattage, brightness, bulb spacing and maximum connected run are product-specific. Check the manufacturer's label and outdoor-use rating; our event string-light guide covers layout and power planning.
Pick the visual effect first, then size the electrical setup from the product label. LED and incandescent sets can look similar in a catalog while having different power, heat and replacement-part details.
Side by side
| LED | Incandescent | |
|---|---|---|
| Power use | Usually lower for similar decorative applications; compare actual wattage | Typically higher for a similar decorative run |
| Heat | Lower bulb heat in ordinary operation | Bulbs become hotter; keep clear of fabric and foliage |
| Appearance | Many color temperatures and lens styles | Familiar warm filament appearance |
| Replacement | Some sets use replaceable bulbs; others are sealed | Individual bulbs may be replaceable if the model allows it |
| Run limit | Set by the product’s total load and instructions | Set by the product’s total load and instructions |
Check the installation label
Verify the outdoor rating, plug and connection type, bulb spacing, total wattage and maximum connected sets. Use a ground-fault circuit interrupter (GFCI) protected outlet outdoors, protect plugs and connections as directed, and do not string across exits or walking paths.
LED is a sensible default for long decorative runs where lower load matters; incandescent suits buyers who prefer that bulb look and can meet its electrical requirements. See the string-light planning guide for run lengths and layout.
Browse event lighting and sound.
Common questions
Are LED string lights safe to connect end to end?
Only within the maximum connected sets or electrical load stated by that exact product's manufacturer. LED does not remove the circuit or connection limit.
Can incandescent string lights be used outdoors?
Use them outdoors only when the set is specifically rated for the location and conditions, and follow its installation instructions.
Which string lights look brighter?
Brightness depends on the bulb output, lens, spacing and layout. Compare the product's stated lumens where provided and view a sample in the intended setting.