To know if your commercial door needs maintenance, look out for key signs. If a door is difficult to open, sticks, or fails to latch, there may be an issue. Noises, such as grinding or squeaking, can indicate worn parts. Misaligned locks or poor seals can lead to security problems. For fire-rated doors, check for a visible UL/FM label, ensure they self-close, and confirm gaps are no larger than ⅛ inch. These doors require annual inspections in accordance with NFPA 80. Feelings of drafts suggest poor sealing. Also, look for visible damage, such as dents or warping, and inspect the weatherstripping. Even if doors function well, fire-rated ones should be inspected annually, while high-traffic or automated doors may require more frequent checks. If unsure, consider hiring a professional for an inspection.