Buildings require maintenance all the way from the roof to the floors. However, it is important not to ignore units that occupy each level of a facility. Properly cleaning the evaporator coils on a rooftop unit ensures that the building is being operated to its max efficiency. In this video by Slipstream, Dave Herman demonstrates how evaporator coils on a rooftop unit need to be cleaned, and which solution tends to work best for the product at hand.