P, N, RLC and FCN Air-Traps are Patented
The Air-Trap™ concept has been incorporated into IAPMO IGC 196-2018 Standard for Condensate Traps and Overflow Switches for Air-Conditioning Systems.
Residential / Lite Commercial
Positive / Negative Pressure
Des Champs HVAC Air-Trap™ waterless trap allows liquid condensate to drain from the HVAC equipment and simultaneously prevents air from entering or escaping from the equipment.
by Nicholas H. Des Champs, Ph.D., PE, ASHRAE Fellow
A comprehensive guide to HVAC condensate removal.
Available for Viewing and Download
Compact Residential / Lite Commercial Negative Pressure
The Air-Trap Concept
Maximum Pressures and Connection Sizes
Des Champs Technologies has moved into a new 30,000 sq. ft. facility!
New Address: 2 Nikki Lane • Natural Bridge Station, VA 24579
It's Time to Reconsider the Use of P-Traps
for HVAC Condensate Removal