Frederick County Fire & Rescue/Frederick City units were toned out for the ’smoke in the house’ Wednesday, July 2nd around 12:00 hours. Engine 12 (Independent), 23 (Junior), Tower 1 (Independent) and Amb 29 (Junior) responded. Fumes and light smoke were located in a malfunctioning HVAC unit. Units were placed in service shortly after arriving. Here are some apparatus shots.