The monsoon season in Singapore brings much-needed respite from the heat, but it also poses challenges for homeowners—especially when it comes to air conditioning systems. With increased humidity, heavier rainfall, and cooler temperatures, your aircon unit is at higher risk of developing mould and water-related issues. Taking a few preventive measures can help ensure your system runs smoothly, efficiently, and healthily throughout the wet season.
Understand the risks of moisture and humidity
Monsoon months mean high humidity levels, and when this moisture infiltrates your aircon unit, it becomes the perfect breeding ground for mould. Spores can form in the indoor unit’s evaporator coils, filters, and drainage pipes, potentially circulating through your home and causing respiratory issues or allergic reactions. Besides health concerns, the constant exposure to moisture can lead to water damage inside your unit or around your walls and ceiling.
To protect your home and your family, proactive maintenance is more important than ever during this season.
Clean and inspect your air filters regularly
Your aircon’s filters are the first line of defence against mould. Clogged or dirty filters trap moisture, which leads to fungal growth and unpleasant odours. During monsoon season, it’s recommended to clean or replace your filters every two to three weeks. This is especially critical if your household includes children, elderly family members, or anyone with respiratory sensitivities.
Make it a habit to switch off the unit and remove the filters for a quick wash with mild detergent. Allow them to dry completely before reinstalling. A clean filter also improves airflow, reducing strain on the system and lowering energy bills.
Check for proper drainage and water leaks
Water leakage is a common complaint during the rainy season. Condensation naturally forms in your aircon, but when the drainage system gets blocked or overwhelmed by excess humidity, it can result in dripping water from the indoor unit. Left unchecked, this can damage your walls, ruin paintwork, and even affect electrical wiring.
Inspect the drainage pipe to ensure there’s no blockage and that water is flowing freely away from the unit. If you notice persistent dripping, puddles near the unit, or stains on the wall, it’s best to schedule a check-up. This small step can prevent costly repairs down the road.
Keep your aircon dry when not in use
With the monsoon cooling down temperatures, you might not use your aircon as often. However, moisture can still linger inside the unit. To prevent this, run the unit in “dry mode” for 20 to 30 minutes every few days. This mode helps reduce indoor humidity levels and removes excess moisture from the internal components of the aircon.
It’s also a good idea to leave windows closed during rain to stop additional moisture from seeping in, especially in rooms where the aircon is installed. If possible, invest in a dehumidifier to complement your system’s efforts and keep humidity under control.
Schedule professional servicing before or during the monsoon
No matter how diligent you are with home maintenance, professional servicing gives your aircon a much-needed thorough cleaning. A trained technician can identify hidden issues like mould growth inside the coils, a clogged drainage system, or refrigerant leaks that you might not spot on your own.
During the monsoon season, it’s worth getting your unit serviced more frequently than usual—ideally once every three to four months. The good news is that aircon servicing price in Singapore remains affordable, especially if you opt for annual maintenance contracts or bundled servicing packages. Not only does this ensure your system remains hygienic and efficient, it also prolongs its lifespan.
Seal windows and doors to reduce indoor humidity
While this might seem unrelated to your aircon, keeping excess moisture out of your home can actually support your aircon’s performance. Poorly sealed windows and doors allow warm, humid air to enter the room, making your aircon work harder to maintain the desired temperature and reduce humidity. This extra strain can accelerate wear and tear and increase energy usage.
Use weather stripping or silicone sealants to close up gaps, and consider installing heavy curtains or blinds to minimise indoor condensation. These simple tricks can make a noticeable difference in your home’s comfort levels during the rainy season.
Think long term with a smart aircon upgrade
If your system is old or constantly requiring repairs, it might be time to consider an upgrade. Modern systems come equipped with features like smart humidity control, mould-resistant filters, and energy-saving dry modes that are perfect for Singapore’s climate. When planning your aircon installation, look for inverter models that automatically adjust cooling levels to maintain stable indoor temperatures without overworking the compressor.
Smart aircons can also be controlled via app, allowing you to adjust settings remotely—ideal for drying out the system during the rainy season, even when you’re not home. While the initial cost may be higher, the long-term savings in energy efficiency and reduced repair needs make it worthwhile.
Don’t let the rain dampen your comfort
Monsoon season doesn’t have to be a nightmare for your aircon unit. With regular cleaning, smart habits, and timely professional help, you can prevent mould, leaks, and system failures before they start. At Affordable Aircon Pte Ltd, we’re here to support your home cooling needs no matter the weather. Whether you’re due for a service or considering a new installation, you can always count on our team to keep your aircon running at its best.