LS Aircon Servicing Singapore

Aircon is not Used

What Happens if Aircon is not Used For A Long Time in Singapore

An aircon is the most important home appliance in Singapore, and if aircon is not used for a long time, it can have certain effects on aircon’s health. Aircon is an indispensable part of life in Singapore, where the tropical climate brings heat and humidity year-round. Many residents rely heavily on air conditioning to maintain a comfortable indoor environment. However, there are times when aircon units are not used for extended periods, whether due to seasonal changes, vacations, or other reasons. In this article, we will explore what happens when aircon is not used for a long time in Singapore and how it can impact the units and the indoor environment.

Aircon is Unused for a Long TimeĀ 

Turning on the aircon after a long time can instill a fear that any hidden problem might have taken better of it during that period. However, apart from technical problems, there will be some other health-related factors, such as if an aircon is not used for a long time, it should not be turned on without proper cleaning. LS Aircon Servicing Singapore suggests the following issues if the aircon is not been used long time in Singapore.

1. Mold and Mildew Growth

One of the primary concerns when aircon is not used for an extended period in Singapore is the growth of mold and mildew. The combination of high humidity and warm temperatures creates an ideal environment for these microorganisms to thrive. Mold and mildew can develop within the air conditioning unit, particularly in areas where moisture tends to accumulate, such as the evaporator coils and drainage system.

When mould and mildew build up in the aircon unit, they can affect indoor air quality when the unit is eventually turned on again. The spores released by mould and mildew can be harmful, especially for individuals with respiratory issues or allergies. It’s essential to clean and maintain the aircon unit regularly, even during periods of non-usage, to prevent mold and mildew growth.

Aircon is not Used For A Long Time

2. Reduced Efficiency and Performance

Another consequence of the aircon left unused in Singapore is reduced efficiency and unit performance. When an aircon sits idle for an extended period, various components, such as the compressor, refrigerant, and moving parts, may experience degradation or malfunction. This can lead to issues such as:

  • Reduced cooling capacity: The aircon unit may struggle to cool the indoor space effectively, resulting in discomfort for occupants.
  • Increased energy consumption: A poorly maintained or inefficient aircon may consume more energy to achieve the desired cooling, leading to higher utility bills.
  • Potential breakdowns: Components that are not regularly used or maintained are more prone to failure, increasing the risk of costly repairs or replacements.


Regular maintenance and periodic operation of the aircon unit, even if it’s at a higher temperature setting, can help preserve its efficiency and performance over time.

3. Dust and Debris Accumulation

When an aircon unit is not used for an extended period, it becomes susceptible to dust and debris accumulation. Dust particles can settle on various components, including filters, coils, and vents, reducing the unit’s effectiveness and indoor air quality.

Excessive dust buildup can clog filters and hinder airflow, forcing the aircon to work harder to maintain desired temperatures. This contributes to increased energy consumption and accelerates wear and tear on the unit.

Regular Maintenance Even if Aircon is Not Used

Regular cleaning and maintenance, such as replacing or cleaning filters, clearing debris from vents, and inspecting internal components for dust accumulation, are essential to ensure optimal performance and longevity of the aircon system.

Aircon is not Used For A Long Time in Singapore

4. Pest Infestations

In humid climates like Singapore, non-usage of aircon can also lead to pest infestations within the units. Pests such as cockroaches, ants, and even rodents are attracted to the warmth and moisture present in aircon systems that are not in use.

These pests can cause damage to internal components, create blockages in drainage systems, and compromise indoor air quality. Additionally, their presence can pose health risks and require professional intervention to eradicate.

Preventive Measures

Taking preventive measures such as sealing gaps or openings in and around the aircon unit, keeping the area clean and free of food debris, and scheduling regular inspections can help mitigate the risk of pest infestations.

5. Moisture-related Issues

Lastly, when aircon is not used for a long time, it can lead to moisture-related issues within indoor spaces. Without the cooling and dehumidifying effects of aircon, humidity levels can rise, creating a damp environment that is conducive to mold growth, musty odors, and potential damage to furniture, electronics, and structural materials.

To prevent moisture-related problems, it’s essential to maintain adequate ventilation, use dehumidifiers if necessary, and consider periodic operation of the aircon system, even at higher temperature settings, to control humidity levels indoors.


In conclusion, if the aircon is not used for an extended period in Singapore, it can lead to various consequences, including mold and mildew growth, reduced efficiency and performance of units, dust and debris accumulation, pest infestations, and moisture-related issues. Regular maintenance, periodic operation, and preventive measures are key to preserving the functionality, longevity, and indoor air quality of aircon systems in such climates.