Indoor Air Quality
What Humidity Level Should My House Be?
2026-06-16 4 min readBy Launch Air & Heating
Getting indoor humidity right is the secret to comfort in Florida. Here's the ideal range and how to hit it.
Your Ideal Indoor Humidity
The target range
Aim for 45-55% relative humidity indoors. Below 40% feels dry; above 60% feels muggy and invites mold.
Why it's hard in Florida
Outdoor humidity here is extreme. Keeping indoor levels in the healthy range takes more than just running the AC — especially on mild or rainy days when the AC runs less.
What high humidity causes
- A muggy, warm feeling even at low thermostat settings
- Mold and mildew growth
- Musty odors
- Damage to wood floors and furniture
How to control it
- Keep your AC well maintained
- Ensure the system is properly sized (oversized units dehumidify poorly)
- Add a whole-home dehumidifier for reliable, automatic control
The comfort bonus
At the right humidity, you'll feel cool at a higher thermostat setting — saving energy.