FCN – WATERLESS AIR TRAP (P-TRAP UPGRADE)

A waterless trap replaces the traditional P-trap on your HVAC condensate drain line. Regular P-traps can dry out (which lets air blow through), freeze in attics, or clog with sludge. The Supco FCN uses a floating membrane instead of standing water, so none of those problems apply. Compact enough for tight installations.

Specs: Waterless condensate trap, replaces standard P-traps, compact design, no water required

Replaces: FCN

Fits: 3/4″ HVAC condensate drain lines. Universal replacement for P-traps on all brands of air handlers and furnaces.

In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.

Specs

• TypePipe or fitting
• DetailP-TRAP UPGRADE

What is the difference between the pipe types you stock?

PVC is used for condensate drains and for venting high-efficiency furnaces. Black iron and CSST are gas. Conduit protects electrical. They are not interchangeable and each has its own code requirements.

Can I use PVC for a furnace flue?

Only on a condensing (90%+) furnace that is designed for it, and only the pipe schedule and material the manufacturer specifies. An 80% furnace vents into metal B-vent, never plastic - the flue gas is far too hot.

What size condensate drain line?

3/4 inch is the residential standard. Give it a consistent slope, put a cleanout at the top so it can be vacuumed, and fit a trap where the equipment calls for one.

Who can run gas pipe?

In Texas a homeowner may work on their own home under the homeowner exemption; that does not extend to doing it for someone else. Gas work is unforgiving and leak testing is not optional. If you are unsure, this is one to hand off.

Do you cut to length?

Ask at the counter. 10226 Plano Rd, Suite 104 in Dallas.