Cheap LED Christmas Lights: What to Look for Before Buying
Learn which safety marks, outdoor ratings and energy clues matter before buying low-cost LED holiday strings.
Check safety testing, indoor or outdoor rating, and energy use before you buy cheap LED Christmas lights. A low price helps only if the set is tested, durable, and suited to where you will use it. LED means light-emitting diode, a small light source used in holiday strings.
Boxes vary, so read marks for testing, location use, and power before you pay.
Verification note: Program terms and availability can change. This page was checked against linked sources on November 03, 2026.
Indoor or outdoor use?
UL Solutions evaluates decorative lighting strings to UL/ANSI 588. Indoor-only strings carry a green holographic label. Indoor-or-outdoor strings carry a red holographic label UL bulletin on decorative lighting strings.
Never use a green-label set outside. The U.S. Consumer Product Safety Commission urges buyers to pick sets tested by a recognized laboratory such as UL or ETL.
Use only sets with fused plugs. Verify outdoor certification before exterior use CPSC holiday decorating safety release.
How much power will they use?
The U.S. Department of Energy states LED holiday strands use about 70% less energy than incandescent strands. Lighting a 6-foot tree 12 hours per day for 40 days costs about $0.27 versus $10.00 how holiday lights use energy.
Savings add up with longer daily use or several strings. The Department of Energy also describes residential LEDs, especially ENERGY STAR products. They use at least 75% less energy and last up to 25 times longer than incandescent lighting.
What helps a low-cost string last?
ENERGY STAR says a certified decorative LED light string uses approximately 70% less energy than an incandescent string. It has no filament, moving parts or glass, which makes it more durable and shock-resistant. ENERGY STAR says certified decorative light strings carry a manufacturer-backed warranty.
Look for the certification mark on the package. Keep the box so you can use the warranty if a section fails.
How do you hang them safely?
The Consumer Product Safety Commission advises turning lights off when sleeping or leaving home. Use no more than three standard-size sets per extension cord. The Commission does not mandate third-party certification.
A missing lab mark means safety characteristics are unverified, so keep shopping.
- Check each socket and wire for cracks or fraying before hanging
- Discard damaged sets instead of trying to reuse them
- Replace a burned-out bulb with the same wattage