N-Series

Neg/Pos Pressure

P-Series

Positive Pressure

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Neg / Pos Pressure

Residential / Lite Com.

FCN-Series

Compact Negative Pressure

Residential / Lite Com.

Union Strainer

PLP-Series

Positive Pressures Ranging from 0 to 40" WC

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DMS-Series NEW!

Negative and/or Positive Pressure

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HVAC Air-Trap Waterless HVAC Condensate Traps - Pressures and Sizes
HVAC Air Trap Waterless HVAC Condensate Trap by Des Champs Technologies
DMS Series HVAC Air-Trap = Negative and/or Positive Pressure Waterless HVAC Condensate Trap by Des Champs Technologies

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HVAC Air Trap Waterless Traps for HVAC Condensate Removal

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.  

HVAC Air Trap - P Series - Positive Pressure Waterless Trap - Des Champs Technologies
HVAC Air Trap - N Series - Negative Pressure Waterless Trap - Des Champs Technologies

N-Series

HVAC Air Trap - RLC Series - Residential - Lite Commercial Positive / Negative Pressure Waterless Trap - Des Champs Technologies
HVAC Air Trap - FCN Series - Compact Residential - Lite Commercial Negative Pressure Waterless Trap - Des Champs Technologies

Where to Buy

The Air-Trap Concept

Maximum Pressures, Connection Sizes and Lengths

Testimonials

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P-Series

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RLC-Series

FCN-Series

Perfect for Ductless Mini-splits

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HVAC Air Trap Waterless HVAC Condensate Trap by Des Champs Technologies

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HVAC Air Trap - PLP Series - Positive Pressure, Low Profile 0 to 40 inch WC - Waterless HVAC Condensate Trap - Des Champs Technologies

PLP-Series

Air-Traps Meet IMC® Code Section M307.2.4.1

Positive Pressure Waterless Trap

Negative / Positive Pressure Waterless Trap

Residential / Lite Commercial Positive / Negative Pressure Waterless Trap

Compact Residential / Lite Commercial Negative Pressure Waterless Trap

Positive Pressure, Low Profile 0 - 40" WC Waterless Trap

RESIDENTIAL  •  COMMERCIAL  •  INDUSTRIAL  •  INSTITUTIONAL

Solves Common Issues Associated with Standard P-traps

• Operates Dry — Eliminating:

    - Freezing and breaking

    - Dryouts

    - Sludge buildup

    - Geyser effect

    - Mold and mildew caused by geyser effect

• Prevents air leakage

• Reduces trap height requirement by 1/2

• Predesigned — eliminating field-designed errors

It's Time to Reconsider the Use of P-Traps for HVAC Condensate Removal - HVAC Air-Trap Waterless Traps by Des Champs Technologies
HVAC Air-Trap Engineering and Product Catalog Download

Latest Additions

PBS Segment on HVAC Air-Trap

A 7+ minute PBS segment on the HVAC Air-Trap that is currently airing.

Customer Air-Trap Installations

A video montage of HVAC Air-Trap installations over the years.

An Air-Trap™ to the Rescue?     

The HVAC Jerks Podcast

The HVAC Jerks speak with Connie Loughhead, President of Des Champs Technologies. An entertaining conversation about the origins of the HVAC Air-Trap, how the Air-Traps operate and the many resulting benefits — an in-depth discussion and analysis of the Air-Trap. June 2023

The HVAC Jerks Podcast, HVAC Air- Trap, Connie Loughhead, Des Champs Technologies

P, N, RLC, FCN, PLP, DMS, Furnace Series and Venturi Lift System HVAC Air-Traps are Patented:

US9777957B1    US10775073B2    US11231203B1    US10605480B1    US11060786B1   US11808482B1

2024 Uniform Mechanical and Plumbing Codes - HVAC Air-Trap

Review of how HVAC Condensate Traps are to Function as set Forth in the 2024 Uniform Mechanical and Plumbing Codes

by Nicholas H. Des Champs

Ph.D., PE, ASHRAE Fellow

Now Available!

DMS-Series

Negative and/or Positive Pressure Waterless HVAC Condensate Trap

Max. negative pressure

Max. positive pressure of WC

Available connection sizes


Length

1 inch

5/8"  


3/4" (25mm) 5/8" ID Drain Hose

2.95 inches

DMS Series HVAC Air-Trap = Negative and/or Positive Pressure Waterless HVAC Condensate Trap by Des Champs Technologies

DMS-Series

Negative and/or Positive Pressure Waterless Trap

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