CLICK HERE TO CALL 24/7
Schedule Service
CALL 24/7
Close
Elmer's logo in pink with awareness ribbon.

How Humidity Impacts Your AC - And What to Do About It

July 10, 2025
humidity, ac, how humidity impacts your ac, air conditioner, air conditioning, dehumidifier

Let’s talk about something that most people in humid climates know all too well: that sticky, heavy feeling in the air that makes even 75 degrees feel like a sauna. Yep—humidity. While we often focus on the temperature outside, it’s the moisture in the air that can really make or break your comfort at home. And believe it or not, your air conditioner has a lot to do with that.

But here’s the thing: humidity doesn’t just make you sweat—it can also mess with your AC. So if your home still feels muggy even with the air conditioner running, humidity might be the culprit.

Let’s break it down.

What Humidity Actually Does to Your AC

Your air conditioner’s job isn’t just to cool the air—it also helps remove moisture. But when the humidity is too high, your AC might start struggling to keep up. Here’s how:

1. It Makes Your AC Work Harder

High humidity means more moisture in the air. Your AC has to pull that moisture out before it can cool the air effectively. That takes extra energy—and can wear out your system faster over time.

2. It Makes You Feel Hotter

Ever walk into your home expecting that cool blast of relief… and instead, you get air that feels kinda cool but still clammy? That’s humidity at work. Even if your thermostat says 72°F, it won’t feel like 72 if there’s too much moisture in the air.

3. It Can Lead to Mold and Musty Smells

When your home stays damp, it creates the perfect environment for mold and mildew to grow—especially in places like vents, ducts, and around your AC unit. And that musty smell? Not great for air quality.

How to Tell If Humidity Is a Problem in Your Home

Here are a few red flags:

  • Your home feels warmer than the thermostat says
  • Windows are fogging up
  • You’re constantly adjusting the thermostat and still not comfortable
  • There’s a musty odor that won’t go away
  • Your AC runs non-stop

If any of these sound familiar, humidity could be the reason.

So… What Can You Do About It?

Glad you asked. The good news is that there are several ways to combat high humidity and help your AC work more efficiently.

  • Use a Dehumidifier

A whole-home dehumidifier can work alongside your AC to pull excess moisture from the air. It’s a game-changer for comfort and energy efficiency.

  • Schedule a Maintenance Check

Sometimes, the issue isn’t the humidity—it’s your AC. A dirty filter, clogged drain line, or low refrigerant can all keep your system from removing moisture properly. A professional tune-up can help pinpoint and fix these issues.

  • Seal Air Leaks

Humidity from outside can sneak in through cracks, poorly sealed windows, or even your attic. Sealing those up helps keep your cool, dry air in and the muggy air out.

  • Adjust Your Thermostat Settings

Turning your fan to “Auto” instead of “On” gives your AC time to drain away moisture between cycles. When the fan is always on, moisture can get blown right back into your home.

Contact Elmer's Home Services For All Your AC and Air Quality Needs in San Antonio, Houston, and DFW Areas

Bottom line? Don't sweat it... literally. If your AC is running but you’re still uncomfortable, high humidity might be to blame. The good news? You don’t have to live with that sticky, swampy feeling. A few smart tweaks—plus a little help from your local HVAC pros—can make a big difference.

Need help beating the humidity in your home? We’re here for you. Give us a call and let’s bring comfort back—without the clammy.

OUR LATEST
Home Service Tips
May 4, 2026
San Antonio’s “Ugliest HVAC” Winner Finally Gets an Upgrade After 40 Years

In San Antonio, a struggling AC is not something you can ignore. You feel it in the rooms that never quite cool down, in the airflow that never seems right, and in the constant question of whether the system is going to hold up. That’s what led us to create the Ugly HVAC Contest at […]

Read More
April 15, 2026
How Regular AC Repairs Improve Indoor Air Quality and Comfort

Maintaining the health of your air conditioning system is essential not only for cooling efficiency but also for ensuring the quality of the air you breathe. An AC unit that operates optimally is less likely to circulate contaminants and more likely to maintain a comfortable temperature throughout your home. Regular repairs and maintenance offer significant […]

Read More
April 14, 2026
Why Won't My Water Get Hot?

Common Reasons Your Water Isn’t Getting Hot and What to Check First It’s a universal law of the universe: your water heater only decides to take a "mental health day" when you’re already running late, or it’s freezing outside. Stepping into a shower expecting steam and getting an arctic blast is a betrayal of the […]

Read More
See More Posts
Elmer's logo in pink with awareness ribbon.
San Antonio
9710 I-35 Frontage Rd 
San Antonio, TX 78233
(210) 369-4313
Houston
6620 Fairbanks North Houston Rd Houston, TX 77040
(713) 489-2591
DFW
340 W Northwest Hwy 
Grapevine, TX 76051
(214) 613-8225
Pink lowercase 'f' icon.Pink Instagram logo
ACCA Air Conditioning Contractors of America logo.BBB Accredited Business badge.HomeAdvisor Top Rated 5-star badge.HomeAdvisor Elite Service badge.
HVAC
Jonathan Herbert 
TACLB124872

Electrical
TDLR # 40048
Plumbing 
REGULATED BY THE TEXAS STATE BOARD OF PLUMBING EXAMINERS
https://tsbpe.texas.gov
P.O. BOX 4200, AUSTIN, TX 78765-4200
512-458-2145 
P. Galvan RMP-45206
©2026 Elmer’s Home Services