FCN-Series Air-Trap™: Compact Residential/Lite Commercial Negative Pressure Waterless Trap - Perfect for Ductless Mini-splits

Seems to be a good replacement for a standard trap

I ordered a FCN-series trap for my main AC drain line to replace a standard trap that had burst over the winter (AC is in the attic). I have not noticed any issues, trap filled with water, seems to drain as it should, and there has been no backup or strange occurrences. I only hope that come winter it drains enough water from the line that it will not burst like a standard trap (currently it sits water filled which makes sense since it's on the negative pressure side). I purchased the FCN series at the suggestion of the company, it seems to be overkill based on fluid flow but it seems more robust than the RLC series. I bought a RLC as well as a trap for my overflow/emergency drain side of the AC since I wouldn't expect it to be draining much or at all except in an upset situation.

Good - could be better

Appears to be a good solution. Could be better by: 1. replace center clips with a screw-on connection like a pvc union. would reduce/eliminate possibility of clips being pulled apart as mentioned in the installation instructions and 2. provide a way to clean on the upstream side of the 3/8" hole as debris could get struck there.

Works good