Attic Condensate Drain Line

The condensate drain line is right beneath the evaporator coils.

Attic condensate drain line.

Sediment algae mold and insects can all clog it up. Horizontal furnace installation or application horizontal furnace installations have the central air system lie on its side. When that happens water backs up into the drain pan under your air handler. Look for white pvc pipe around 3 4 inch 1 9 cm in diameter coming out of your ac system s indoor unit.

There is a secondary drain think an emergency notification that the primary drain is clogged. If the condensate drain line is clogged you will need to use a wet dry vacuum or a special pump to unclog the line. An auxiliary drain pan with separate drain. But that drain line is pretty small so it doesn t take much for it to become clogged.

Find the condensate drain line and drain line access point. Look for an upside down or sideways t shape of pvc pipe with a removable cap. To drill a hole through a brick wall drill several holes around the perimeter of the drain exit and then hammer out the hole with a chisel. An auxiliary condensate drain pan at least 1 5 deep and at least 3 larger than the length width of the appliance beneath which it is placed using corrosion resistant material of adequate thickness 0 7mm galvanized metal or 1 6mm non metallic e g.

Drill any holes as needed through walls in order to accomodate the drain lines. Most but not all ac units will have an easy to locate access point to the drain line. Condensate switches imc 307 2 3 states that all hvac equipment that produces condensate must have either a secondary drain line or a condensate overflow switch a secondary drain pan with a secondary drain line or condensate switch or some combination of these installations should be used to prevent overflow if the primary drain line blocks. Check your ac unit in the attic.

Watch this video to find out more. Just pour a cup of bleach in the drain line s access opening near the indoor air conditioning unit. This will kill any algae mold or mildew that has formed in the pipe. Plastic with a separate drain installed under.

Sand down the rough edges of the hole. The furnace is installed in the attic and placed in this position because of space constraints in the attic.