A/C condensate trap allowed or not - DoItYourself.com Community Forums
Amazon.com: 3/4 Inch Standard Condensate Trap with Cleaning Brush, PVC U Trap for HVAC Systems, Air Conditioner, Effectively Drains Condensate (2 Pack) : Industrial & Scientific
Time to Reconsider Use of P-Traps for Condensate Removal | HPAC Engineering