High Efficiency Gas Furnace Water Drain

And it has a gas burner with electronic ignition although condensing.

High efficiency gas furnace water drain. 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. A high efficiency condensing furnace can achieve efficiency ratings of 90 or above. 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. While the condensing furnace is different in its design and repair needs it does have some similarities to a conventional furnace like a conventional furnace it takes in cold air from the house and runs it through an air filter.

Condensate from a high efficiency furnace typically has a ph of about 5 0 but can range from 3 5 to 6 5. Why a high efficiency furnace creates condensation how in the heck does a high efficiency furnace create condensation water anyway. A lower efficiency furnace extracts some heat from combustion gases and then quickly vents them out the flue pipe. The condensate trap is absolutely mandatory for a high efficiency gas furnace.

It s all about how the furnace extracts heat from combustion gases. Fix the problem with chemical tablets and a larger drain hose. High efficiency boilers and furnaces require a condensate neutraliser to protect drain pipes from corrosion. If you notice water around the furnace the condensate drain may be clogged with slime.

The epa recommends that household water be between 6 5 and 8 5 for health reasons not because of damage to pipes. 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. This is typically flown out of a pvc pipe that comes from the furnace and drains into the floor drain in your furnace room.

The resulting no2 nitrogen dioxide and no nitrous oxide dissolve into the water vapor in the exhaust stream to form nitric acid. Your high efficiency furnace has an entire system set up to drain away the condensation it produces. Additionally the inducer motor would suck air through the drain if it weren t trapped which could. It moves the air with a circulating fan.

Shove the tablets into the drain pan opening and push them in farther using a dowel or long screwdriver. How a high efficiency condensing furnace differs. Add new tablets monthly during air. What is vented is a residual corrosive condensate of water and carbon dioxide.