How to Reduce Humidity in Your Home Without a Dehumidifier

Dehumidifiers work, but they’re expensive to run, noisy, and only treat the symptom. Here are evidence-based ways to reduce indoor humidity in your Adelaide home using ventilation and behaviour changes.

Free Humidity Reducers

• Cross-ventilate daily: Open windows on opposite sides of the house for 15 minutes each morning
• Use exhaust fans properly: Run bathroom fans for 15 minutes after showers, kitchen fans while cooking
• Don’t dry clothes indoors: Each load adds 5 litres of moisture
• Open bedroom windows briefly in the morning: Releases overnight moisture from breathing
• Keep lids on pots while cooking: Reduces kitchen steam by 60%

Low-Cost Improvements

• Seal gaps around pipes and cables that let humid air into wall cavities
• Install trickle vents on windows that don’t have them
• Improve subfloor ventilation with additional passive vents
• Use moisture-absorbing crystals in enclosed spaces (wardrobes, cupboards)

If humidity remains above 60% despite these measures, the moisture source is structural — rising damp, hidden leaks, or severe condensation. A professional assessment identifies the root cause.