Gas Furnace Condensate Drain Line

Since the drain taps into the exhaust system leaving it open to the air would allow for a potential exhaust flue gas leak in the living space which is a big no no.

Gas furnace condensate drain line.

The condensate trap is absolutely mandatory for a high efficiency gas furnace. The growth can clog the drip pan or even rinse into the condensate drain lines causing a clog in the piping. Your condensate line also known as a condensate drain line or condensate drain does several jobs but none are more critical to the functionality of your appliance than draining excess moisture outside of your home. Furnace condensate typically ranges between 3 0 and 5 0 but it can get stronger.

If you spot any of the tell tale signs of a condensate line or drip pan clog the average homeowner is more than capable of clearing simple clogs if confident. If the condensate drain line is clogged you will need to use a wet dry vacuum or a special pump to unclog the line. Clear condensate line clogs. Additionally the inducer motor would suck air through the drain if it weren t trapped which could.

Condensate switches imc 307 2 3 states that all hvac equipment that produces condensate must have either a secondary drain line or a condensate overflow switch a secondary drain pan with a secondary drain line or condensate switch or some combination of these installations should be used to prevent overflow if the primary drain line blocks. Route it to the floor drain and secure it with tubing straps. Condensation from air conditioning coils contains bacteria that can form slime and clog the condensate pan drain tube. This will kill any algae mold or mildew that has formed in the pipe.

In a youtube interview with hvac trainer bruce marshall of emerson swan mike bernasconi says he has measured condensate as low as 1 8 or 2 0 in part because of the effect of chemicals added to the fuel gas by utilities see.