Attic Ac Condensate Drain Line

Look for white pvc pipe around 3 4 inch 1 9 cm in diameter coming out of your ac system s indoor unit.

Attic ac condensate drain line. My goal was to piece together a new drain line and use some clear flexible tubing to recreate the trap. When everything is working properly condensation runs down the drain line and exits outside your house. 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. It may be covered by a removable access panel.

It may be located directly under the indoor air handler in your attic or utility closet. Find the condensate drain line and drain line access point. Because entire central air system is lying on its side in the event of condensate drain pan failure water does not drip in one general location. The trap would collect any gunk and adjustable clamps would allow access for cleaning.

This is in place as an added layer of protection against water damage. Then the clogged ac drain line starts to cut off. Most but not all ac units will have an easy to locate access point to the drain line. For furnaces in the attic there is a second condensate drain pan.

If there is condensate in the overflow pan you probably have drain line clog. This helps ensure that if a backup occurs that the water properly trips the switch instead of overflowing out of the vent. Find the condensate pan. If there is standing water in the condensate pan your drain line is probably clogged.

It s usually better to replace the entire drain pan rather than trying to fix it. Look for an upside down or sideways t shape of pvc pipe with a removable cap. When that happens water backs up into the drain pan under your air handler. You can do this project too if you find your air conditioner giving out due to a condensation line clog.

How to replace an air conditioning drain line. 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.