How often should LED streetlights be cleaned?

The cleaning frequency for LED streetlights depends on the local environment. For typical urban roads (with relatively low dust levels), cleaning every 6 months is recommended. In industrial parks, areas near construction sites, or regions prone to high winds and sand, they should be cleaned every 3 months. In coastal areas exposed to salt spray, cleaning should occur every 2 months, accompanied by inspections for corrosion. In areas where birds congregate, cleaning should be performed as needed, based on the accumulation of bird droppings.

Cleaning method: Use an aerial work vehicle or a lifting platform. Wipe the light covers and housings with a soft cloth or sponge dampened with a neutral cleaning agent (such as a diluted dish soap solution) and clean water.

Do not use strong acids, strong alkalis, organic solvents, or abrasive materials. A glass squeegee may be used for tempered glass. Exercise extra caution with polycarbonate (PC) lenses to avoid scratching them. Dust on heat-dissipation fins can be removed using a vacuum cleaner or compressed air (at a pressure of ≤0.3 MPa). Always disconnect the power and ensure the fixtures have cooled down before cleaning. After cleaning, check that the sealing gaskets remain intact. For smart streetlights, ensure that sensors—such as light-control photocells or cameras—are also cleaned.

Regular cleaning not only maintains high brightness but also improves heat dissipation and extends the service life of the fixtures. To determine the optimal cleaning frequency, compare the illuminance levels before and after cleaning; if the illuminance increases by more than 10% following a cleaning, the cleaning interval should be shortened.