In both cases, it becomes necessary to "sweep" the chimney in order to thoroughly inspect the flue and promote proper venting of any fireplace or appliance venting through the chimney. Lint build up in your dryer vent decreases the efficiency of your clothes dryer and poses a potential fire hazard. Our Dryer Vent Inspection and Cleaning service works just like our Chimney Inspection and Sweep service. We'll sweep the vent clear of lint buildup and make any needed repair recommendations. Yes and no.