High Efficiency Gas Furnace Water Drain

This is one of the things that make it different from a standard efficiency furnace.

High efficiency gas furnace water drain.

It s all about how the furnace extracts heat from combustion gases. How a high efficiency condensing furnace differs. If you notice water around the furnace the condensate drain may be clogged with slime. This is typically flown out of a pvc pipe that comes from the furnace and drains into the floor drain in your furnace room.

Condensate from a high efficiency furnace typically has a ph of about 5 0 but can range from 3 5 to 6 5. But a high efficiency furnace. It uses a venting system to extract that heat before venting. A lower efficiency furnace extracts some heat from combustion gases and then quickly vents them out the flue pipe.

And it has a gas burner with electronic ignition although condensing. Your high efficiency furnace has an entire system set up to drain away the condensation it produces. The condensate trap is absolutely mandatory for a high efficiency gas furnace. In old fashioned low efficiency gas burners all that gas the co2 the water vapor and the nitrogen products known collectively as nox went up the hot chimney into the atmosphere.

What is vented is a residual corrosive condensate of water and carbon dioxide. But if there is an issue or a clog anywhere in the condensate line or drain water will begin overflowing and leaking from the furnace and onto the floor. It moves the air with a circulating fan. The epa recommends that household water be between 6 5 and 8 5 for health reasons not because of damage to pipes.

A high efficiency condensing furnace can achieve efficiency ratings of 90 or above. Add new tablets monthly during air. Additionally the inducer motor would suck air through the drain if it weren t trapped which could. Why a high efficiency furnace creates condensation how in the heck does a high efficiency furnace create condensation water anyway.

High efficiency boilers and furnaces require a condensate neutraliser to protect drain pipes from corrosion. High efficiency furnaces naturally produce condensation as a by product of the natural gas burning. 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. Fix the problem with chemical tablets and a larger drain hose.