When running the primary and secondary evaporator drain lines always?

When running the primary and secondary evaporator drain lines, always ensure they are properly sloped to facilitate drainage and prevent clogs. Use appropriate materials that are resistant to corrosion and can handle the temperature variations of condensate. Additionally, secure the lines to prevent movement and ensure that the secondary drain line is installed in a way that it can effectively serve as a backup in case the primary line becomes blocked. Regular inspections and maintenance are essential to ensure optimal performance.