Skip to content
Money-saving

Clear the HVAC condensate drain line

Your AC pulls humidity from the air and drains it away; algae and sludge clog that line over time.

How often
Every 6 mo
Who
DIY
Typical cost
Up to $20
Time
20 min

Why this matters

Your AC pulls humidity from the air and drains it away; algae and sludge clog that line over time.

If you skip it: A backed-up drain overflows the pan and leaks water into ceilings and walls.

Who should do it

This is a do-it-yourself task. With basic tools and a few minutes, most homeowners can handle it without hiring anyone.

When to do it

Aim for spring. It's the natural reset after winter. Repeat every 6 months.

Frequently asked questions

How often should I clear the hvac condensate drain line?+
Plan to clear the hvac condensate drain line every 6 months. Your AC pulls humidity from the air and drains it away; algae and sludge clog that line over time.
How much does it cost to clear the hvac condensate drain line?+
It typically runs Up to $20. This is a do-it-yourself task. With basic tools and a few minutes, most homeowners can handle it without hiring anyone.
What happens if I skip it?+
A backed-up drain overflows the pan and leaks water into ceilings and walls.