Condensate cascading is a drainage strategy for multi-story buildings where water from several units is routed into a single main drain line. This is a common requirement for our Tri-Zone and Quad-Zone installations in apartments or townhomes. For units located below the main drain line, our Other Accessories include powerful condensate pumps to move water uphill. A Bravo Milano 18,000 BTU Universal Floor/Ceiling unit can generate significant water on a humid day, so a robust drainage plan is a must. If the outdoor unit is on a Wall Bracket, ensure the drain line is clear of the building to prevent staining. Our Installation Kits provide ample flexible tubing to manage these cascading setups. Proper water management prevents property damage and keeps the system operating hygienically.