The day after Thanksgiving is the biggest day of the year for what trade profession?

1. Elevator mechanics
2. Plumbers
3. HVAC technicians
4. Aircraft maintenance technicians

According to Roto-Rooter, the day after Thanksgiving is the busiest day of the year for plumbers, with as much as a 50% jump in service calls compared to other Fridays. Kitchen sink and garbage disposal clogs are the most common post-holiday issue, due in part to greasy food waste that solidifies inside the pipes once cool. Sewer and toilet clogs are the next most common problems and can be credited with giving this day the industry nickname “Brown Friday.”