Our standards →
HVACtroubleshooting

The Secret Reason Your AC Makes Humidity Worse (And How to Fix It)

Discover why your air conditioner might be adding to your home

F
By The FixlyGuide DeskEditorial team
12 min read
Time30 minutes – 3 hours
Cost$0–$300
DifficultyModerate
Homeowner inspecting an outdoor AC condenser unit on a sunny day
Homeowner inspecting an outdoor AC condenser unit on a sunny day
Share

Tools & materials you'll need

Affiliate links
Tools
  • Screwdriver set
    Phillips and flathead
    Amazon
  • Utility knife
    Amazon
  • Caulk gun
    Amazon
  • Shop vacuum
    For cleaning condensate drain
    Amazon
  • Stiff brush
    For cleaning outdoor condenser coils
    Amazon
  • Nylon coil brush
    Amazon
  • Fin comb
    Optional, for straightening condenser fins
    Amazon
Materials
  • HVAC foil tape
    1 roll
    Amazon
  • Exterior-grade caulk
    1 tube
    Amazon
  • New air filter
    Correct size for your furnace/air handler
    Amazon

As an Amazon Associate FixlyGuide earns from qualifying purchases — at no extra cost to you. Prices and availability are accurate as of publication and subject to change.

Quick Answer

If your house feels humid even with the AC running, the most

FAQ

Frequently asked questions

How do I know if my AC is oversized?+

An oversized AC unit cools your home very quickly but doesn't run long

What temperature should my AC be set to for optimal dehumidification?+

Setting your AC to a comfortable temperature, typically between 72-78°F

Can a dirty air filter cause high humidity?+

Yes, a very dirty air filter can restrict airflow, causing your AC

Should I run a dehumidifier and my AC at the same time?+

In some cases, yes. If your AC is properly sized and functioning but

Discussion

Sign in to join the discussion.Sign in

Loading comments…

The FixlyGuide Weekly

Save hours on your next home repair.

One email every Sunday. New guides, the week's top fixes, and a single seasonal maintenance tip you can do in under 15 minutes.

25,134 readers No spam, unsubscribe anytime

By subscribing you agree to receive weekly emails from FixlyGuide.