Attic Ac Condensate Drain Line

So now with all this dirt collecting up and mixing with the condensate line water from your ac you find your air conditioning drain pipe blocked.

Attic ac condensate drain line.

When that happens water backs up into the drain pan under your air handler. Find the condensate drain line and drain line access point. Sediment algae mold and insects can all clog it up. The vent opening should always rise above the trip level of the condensate overflow switch when it is in the primary drain line or pan or above the secondary aux overflow port on the primary drain pan.

When everything is working properly condensation runs down the drain line and exits outside your house. The trap would collect any gunk and adjustable clamps would allow access for cleaning. Then the clogged ac drain line starts to cut off. My goal was to piece together a new drain line and use some clear flexible tubing to recreate the trap.

Pour a gallon of water slowly into the overflow pan under the air handler and observe the water level in the pan to verify that water drains freely into the secondary drain line. You can do this project too if you find your air conditioner giving out due to a condensation line clog. Most but not all ac units will have an easy to locate access point to the drain line. It s usually better to replace the entire drain pan rather than trying to fix it.

If there is condensate in the overflow pan you probably have drain line clog. But that drain line is pretty small so it doesn t take much for it to become clogged. Look for white pvc pipe around 3 4 inch 1 9 cm in diameter coming out of your ac system s indoor unit. Look for an upside down or sideways t shape of pvc pipe with a removable cap.

For furnaces in the attic there is a second condensate drain pan. Find the condensate pan. If there is standing water in the condensate pan your drain line is probably clogged. This is in place as an added layer of protection against water damage.

This helps ensure that if a backup occurs that the water properly trips the switch instead of overflowing out of the vent. It may be covered by a removable access panel.