A/C University
How can I reduce humidity in my home?
Here are the most effective ways to reduce humidity in your home (especially in Florida’s climate):
- Run your AC efficiently – Keep the thermostat on Auto so the system cycles properly and removes moisture.
- Use a dehumidifier – A standalone or whole-home dehumidifier can keep indoor humidity below 50%.
- Ventilate properly – Use bathroom exhaust fans during showers and kitchen fans while cooking.
- Seal leaks – Fix gaps in windows, doors, and ductwork that let humid air seep inside.
- Maintain your AC – Replace filters regularly and clear the condensate drain line to prevent moisture buildup.
- Control indoor moisture – Avoid drying clothes indoors, cover aquariums, and limit long hot showers.
- Improve airflow – Ceiling fans and cross-ventilation help move air and make rooms feel less damp.
👉 If your home still feels humid after these steps, you may need a whole-home solution, like duct sealing or a professional HVAC check to make sure your system is properly sized.
Here’s a step-by-step homeowner checklist to reduce humidity in your home:
✅ 1. Set Your Thermostat Correctly
- Keep the fan on Auto (not On).
- This lets your AC cycle properly and remove more moisture.
✅ 2. Replace Air Filters Regularly
- Check filters every month in Florida’s climate.
- Replace at least every 1–3 months to maintain good airflow.
✅ 3. Clear the Condensate Drain Line
- Pour 1 cup vinegar + 1 cup warm water into the drain line every few months.
- Make sure water flows freely outside.
✅ 4. Use Exhaust Fans
- Run bathroom fans during and after showers.
- Use kitchen exhaust fans when cooking.
✅ 5. Improve Airflow
- Run ceiling fans to keep air moving.
- Open interior doors to allow circulation between rooms.
✅ 6. Seal Air Leaks
- Check for gaps around doors, windows, and ductwork.
- Use caulk, weatherstripping, or duct sealing to keep humid air out.
✅ 7. Control Indoor Moisture Sources
- Avoid drying clothes indoors.
- Cover aquariums and limit long, hot showers.
✅ 8. Consider a Dehumidifier
- Use a portable unit for problem rooms.
- Install a whole-home dehumidifier if humidity regularly stays above 50–55%.
✅ 9. Call a Klein Cooling Professional If Needed
- If your home stays damp, your AC may be oversized/undersized.
- A technician can run a load calculation and recommend solutions.