St. Louis humidity doesn’t play fair. And once summer arrives, it can take a toll on your home—and your health. That’s why now is the perfect time to get ahead of the muggy mess. A well-placed, properly sized dehumidifier not only keeps your indoor air fresh, it also helps your HVAC system run more efficiently.
✅ Pro Tips
Run your dehumidifier in the basement or lower levels where moisture settles.
Check and clean your unit’s filter monthly during peak use.
Keep indoor humidity between 40%–50% for optimal comfort.
Already noticing musty odors? It may be time for a unit upgrade.
Use an Dehumidifier
🌫️ Battling Humidity Before It Hits: Dehumidifier Tips for St. Louis Homes
Spring in St. Louis is beautiful, but we all know what’s lurking right around the corner—humidity season. If you’ve lived in the area long enough, you’ve likely felt that sticky, heavy air creeping indoors by mid-May. And if your home tends to feel damp or musty, it’s time to get ahead of it—before summer humidity hits full force.
Here’s how you can prepare your home and your HVAC system now to stay dry, cool, and comfortable all season long.
💡 Why Humidity Is a Bigger Problem Than You Think
Too much indoor moisture does more than make you uncomfortable. Over time, high humidity can:
Encourage mold and mildew growth
Trigger allergies and asthma
Warp wood floors and furniture
Reduce your HVAC system’s efficiency
Make your home feel warmer than it actually is
Even if your air conditioner is working, high humidity makes it harder to reach and maintain your desired comfort level—meaning your AC works harder and longer, driving up your energy bill.

🛠️ How a Dehumidifier Helps
A whole-home dehumidifier works in tandem with your HVAC system to extract excess moisture from the air, keeping your indoor humidity between the recommended 30%–50% range. You’ll notice:
Cleaner, fresher air
Less musty odor
Better comfort at higher thermostat settings
Reduced strain on your AC unit
If you don’t already have a dehumidifier installed—or if yours is aging out—it’s worth investing in one now before the dog days of summer roll in.
✅ St. Louis Dehumidifier Tips from the Pros
Here are our top tips for managing indoor humidity efficiently:
Start early. Don’t wait until July—install or service your dehumidifier now to beat the rush.
Check your basement. Basements are humidity hot zones. Make sure they’re well-ventilated and consider a separate unit if moisture levels are high.
Clean the filter regularly. Dirty filters reduce effectiveness and airflow. Clean monthly during peak season.
Seal windows and doors. Prevent humid outside air from seeping in with proper weather-stripping and caulking.
Monitor with a hygrometer. These inexpensive devices give you a real-time snapshot of your home’s humidity levels.

📞 Ready to Dry Things Out?
At Al-Don, we’ve helped St. Louis homeowners stay cool and dry since 1955. Our experts can recommend and install the right dehumidifier for your home, so you can stay ahead of the sticky season.
Want expert advice on choosing and installing a air purifier or humidifier? Give AL-DON a call at 314.567.5585 today!