Burnt smell from vents the first time the heat came on this season – should I be scared? This topic has 0 replies, 1 voice, and was last updated 2 months, 1 week ago by hvacmafia. Viewing 0 reply threads Author Posts May 3, 2026 at 7:31 pm #488803 hvacmafiaKeymaster First cold day, turned the heat on for the first time since spring. Got a strong burnt smell from all the vents for about 15-20 minutes, then it went away. Smoke detector didn’t go off. Is this normal? Or do I need to shut it off? Author Posts Viewing 0 reply threads You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In