Struggling with excess moisture in your home or concerned about the effects of dampness around your room, bathroom, kitchen or living room?
A dehumidifier might be just the appliance you need to keep indoor humidity levels in check, protect your belongings, and improve air quality.
In this short post, we cover common questions about dehumidifiers and how they can be beneficial, especially in homes where moisture and mould are common concerns.
Table of Contents
ToggleWhat Does a Dehumidifier Do?
Functionality – A dehumidifier extracts moisture from the air until a specified relative humidity level is reached. Once achieved, a quality dehumidifier maintains that level automatically.

JERVAMNI People’s Choice Dehumidifier (EUR 80)
BENEFITS
- Reduces risks of mold
- Controls dust mites
- Makes indoor air more comfortable.
What is Relative Humidity?
Definition – Relative humidity measures how much moisture is in the air compared to the maximum amount the air can hold at a given temperature, expressed as a percentage.
Importance – Maintaining 45-50% relative humidity helps prevent condensation, mold, and other moisture-related issues.
Sources of Indoor Moisture
- Daily Activities – Everyday actions like cooking, showering, and even breathing contribute to indoor humidity.
- Ash and Dust – Fireplaces and stoves can add to the moisture and air quality concerns, making dehumidifiers particularly useful.
Most Frequently Asked Questions
1. What is the Ideal Humidity Level?
- Optimal Range – 45-50% relative humidity is recommended for comfort and to safeguard your home from mold and allergens.
2. How Does a Dehumidifier Work?
- Refrigeration Technology – Most units cool the air, causing moisture to condense and collect in a tank.
- Desiccant Models – Use absorbent materials to extract moisture, ideal for cooler environments.
3. How Long Does it Take to Control Moisture?
- Timeframe – Generally, a few days to a week, depending on the unit’s capacity and room conditions.
- Severe Dampness – Flooded areas may require additional equipment for faster drying.
4. How Much Water Will it Collect?
- Variable Factors – Depends on dehumidifier capacity, room temperature, and humidity levels. Daily water collection will decrease once humidity is stabilised.
Usage and Maintenance Tips
Can I Use the Collected Water?
- While not safe for drinking, the water can be used for ironing or watering plants.
Choosing the Right Size
- Match the dehumidifier’s capacity to your space. Larger models are more energy-efficient for big areas.
Preventing Mold and Mildew
- Dehumidifiers help by keeping humidity levels too low for mold spores to thrive. Using an air purifier can further enhance air quality.
Home Placement Tips
- Keep dehumidifiers in moisture-prone areas, like rooms, basements or bathrooms. Ensure good airflow around the unit.
Continuous Drainage
- Convenience: Many models offer a hose attachment for continuous water drainage, making maintenance easier.
Conclusion
Dehumidifiers are invaluable tools for creating a healthier indoor environment, especially in homes with poorly placed windows. By managing moisture, they not only protect your belongings but also improve your well-being.
For homeowners in Ireland, dealing with fluctuating humidity levels is a common challenge, and having a reliable dehumidifier can make a noticeable difference.





