I am a home service technician, and I recently completed a job at a customer's home. The customer was experiencing issues with their air conditioning system, including a float switch tripping. Upon arrival, I found that the system was cooling but the float switch was tripping. I performed a drain treatment to clear the drain line, which was extremely clogged. It took longer than expected to flush the drain line, and I had to use a vacuum from the inside and water hose to clear it. I also noticed that the drain line needed a trap and the pvc line was too small for the HVAC system. The customer paid $189 with a card for the drain flush.