I had brand new electricity installed in an addition and the ceiling fan light flickers periodically. We replaced the unit thinking it was the unit but it has continued to happen. First it was a light bulb unit and now it is an integrated LED unit so it is not a bulb issue. Any ideas?
LEDs are NOTORIOUSLY sensitive to any variation in voltage and react INSTANTLY, unlike incandescent bulbs. Anything with a high starting current (clothes washer, dryer, fridge, freezer, A/C unit) could cause a short term voltage dip which could cause the flicker. Try to associate the flicker with other electrical usage to give you some peace of mind. The flicker would be worse if the high starting current device (like a window A/C unit is on the same circuit). You may want to have your mains inspected for damage, just to be safe. It's not likely a problem, just annoying, but having your main panel checked is a good idea. Also if the feed from the power company is sketchy that could also cause the problem.