Additionally the inducer motor would suck air through the drain if it weren t trapped which could.
Gas furnace condensate drain line.
If the condensate drain line is clogged you will need to use a wet dry vacuum or a special pump to unclog the line.
Just pour a cup of bleach in the drain line s access opening near the indoor air conditioning unit.
The condensate trap is absolutely mandatory for a high efficiency gas furnace.
Route it to the floor drain and secure it with tubing straps.
Furnace condensate typically ranges between 3 0 and 5 0 but it can get stronger.
Condensation from air conditioning coils contains bacteria that can form slime and clog the condensate pan drain tube.
The condensate line is one of the most important components of your hvac system.
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.
Clear condensate line clogs.
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.
The growth can clog the drip pan or even rinse into the condensate drain lines causing a clog in the piping.
This will kill any algae mold or mildew that has formed in the pipe.
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.