In Singapore’s hot and humid climate, air conditioning isn’t just about comfort — it’s about survival. However, with constant use, your aircon filters can easily become a breeding ground for mold and bacteria.
If you’ve ever noticed a musty smell when turning on your aircon, that’s a warning sign — mold may already be growing inside your filters. Thankfully, preventing mold is simple with the right maintenance routine and a bit of professional help.
Here’s how to keep your aircon clean, safe, and mold-free all year round.
Why Mold Grows in Aircon Filters
Mold thrives in moist, dark, and warm environments — exactly what’s inside your aircon unit. Over time, dust and dirt build up on the filters, trapping moisture and creating the perfect spot for mold spores to multiply.
Here are the most common causes:
High humidity levels (especially during Singapore’s rainy season)
Dirty or clogged filters that restrict airflow
Infrequent aircon servicing
Poor ventilation in rooms with heavy aircon use
Without regular cleaning, these conditions worsen, leading to unhealthy air and poor system performance.
How Mold in Aircon Filters Affects You
Mold inside your aircon isn’t just unpleasant — it’s also harmful. When the system runs, mold spores are released into the air, which can:
Trigger allergies, asthma, and respiratory problems
Cause musty smells that spread through the room
Lower aircon efficiency and increase electricity bills
Lead to long-term aircon damage if not cleaned properly
That’s why proper aircon cleaning Singapore is essential to maintain good indoor air quality.
Simple Ways to Prevent Mold Growth
Here are some easy but effective maintenance tips to stop mold from forming in your aircon filters:
1. Clean Your Filters Regularly
The easiest way to prevent mold is to clean your filters at least once every 2–3 weeks.
Remove the filters gently.
Rinse them under running water.
Let them dry completely before reinstalling.
For deeper cleaning, schedule professional aircon servicing Singapore every 3–4 months.
2. Use “Dry Mode” to Reduce Humidity
Most inverter aircon Singapore models have a Dry Mode that reduces excess moisture in the air. Using this setting regularly keeps the filters drier and less prone to mold.
3. Improve Ventilation
Open windows occasionally to allow fresh air to circulate. This helps lower humidity levels and prevent condensation inside your aircon.
4. Avoid Setting the Temperature Too Low
Extremely cold settings cause condensation buildup inside the unit. Instead, set your aircon between 24°C and 26°C for efficient cooling without excess moisture.
5. Schedule Professional Cleaning
Even with regular care, mold can still hide deep inside your fan coil unit and ducts. Professional aircon cleaning Singapore ensures all hidden areas are disinfected and cleaned safely.
At Lion City Aircon, our technicians use chemical cleaning methods that remove mold, bacteria, and dirt — leaving your system fresh and hygienic.
What to Do If You Already Smell Mold
If you notice a musty odor or weak airflow, mold may already be present in your filters or coils. In this case:
Turn off the aircon immediately.
Remove and clean the filters.
Contact a professional aircon servicing Singapore company for a thorough inspection.
Never spray harsh chemicals or bleach into your aircon — it can damage the components and worsen the problem.
The Importance of Regular Aircon Servicing
Regular servicing not only prevents mold but also improves cooling performance and lowers electricity costs. A professional aircon cleaning Singapore service includes:
Deep cleaning of filters and fan coil units
Removal of dirt, mold, and bacteria buildup
Checking drainage pipes to prevent water leaks
Ensuring optimal airflow and energy efficiency
At Lion City Aircon, we specialize in maintaining a mold-free and efficient air conditioning system for Singapore homes and offices.
📞 Call +65 8818 5781 or visit lioncityaircon.sg to book your next service and enjoy cleaner, healthier air today.
