The Silent Cool: Noise Reduction in Wall Split Air Conditioning Systems

Split Air Conditioning Systems
Split Air Conditioning Systems

In the pursuit of optimal comfort within our living and working spaces, wall-mounted air conditioning (AC) systems have become indispensable fixtures. These sleek and efficient units provide effective cooling while seamlessly integrating into our interior decor. However, one common concern associated with traditional wall-split AC systems is the noise they generate during operation. 

The compressor’s hum and the fan’s whir can sometimes disrupt the tranquillity of our environments, leading to discomfort and annoyance. Advancements in technology and design have led to significant improvements in noise reduction for wall-split AC systems, allowing everyone to enjoy the cool breeze of silent comfort. In this informative article, we’ll explore the importance of noise reduction in wall mounted AC units, the factors influencing noise levels, and the innovative solutions manufacturers are implementing to deliver the silent cool.

What Noise Levels do ACs have?

An air conditioner will create noise, just like any other electrical appliance. The moving components of an air conditioning unit, such as fans and motors, will produce noises while they attempt to cool or heat your space.

An air conditioner’s age, type, and condition affect how much noise it makes. Air conditioners used to typically run very loudly, but thanks to technological advancements, noise is no longer an issue with today’s sophisticated AC systems.

The product specification of your machine should provide the decibel rating for an air conditioner. There will be two numbers: one for the noise level of the indoor air conditioner and another for the outdoor unit. Decibel levels of air conditioners can differ significantly. The compressor, the loudest component of an air conditioner, makes portable air conditioners so loud—they can reach up to 55 dBA or more —because the compressor is a component of the interior unit. On the other hand, modern split-system domestic air conditioners will be far quieter because they house the compressor in the exterior unit.

The Importance of Noise Reduction in Wall Mounted AC:

Noise reduction is a critical factor when selecting a wall mounted AC unit, especially for environments where peace is valued, such as bedrooms, offices, and libraries. Excessive noise from air conditioning systems can disrupt sleep, hinder concentration, and diminish overall comfort levels. Investing in a wall-split AC system with compelling noise reduction features can create a serene and conducive environment for relaxation, productivity, and well-being.

Factors Influencing Noise Levels in Wall Split Air Conditioning Systems:

Several factors contribute to the noise levels emitted by wall-mounted AC units, including:

  1. Compressor Technology: The type and efficiency of the compressor play a significant role in determining noise levels. Inverter compressors, known for their quiet operation and energy efficiency, have become increasingly popular for wall-split AC systems.
  2. Fan Design: The design and size of the fan blades, as well as the motor technology, can influence noise levels. Modern wall split AC units utilise aerodynamic fan blades and brushless DC motors to minimise noise during operation.
  3. Vibration Dampening: Transiting vibrations from the compressor and other components to the unit’s housing can contribute to noise. Manufacturers incorporate vibration-dampening materials and isolation mounts to reduce vibrations and minimise noise output.
  4. Airflow Design: Efficient airflow management within the indoor and outdoor units can help reduce turbulence and noise. Innovative airflow designs, such as cross-flow fans and spiral grilles, optimise air distribution while minimising noise generation.

Innovative Solutions for Noise Reduction:

Air conditioners often become louder with age because they must work harder to keep up with wear and tear, especially those without the benefit of contemporary technology. Here are 5 tips to reduce air conditioner noise if you are experiencing issues with a noisy AC unit.

  1. Sound Insulation: Incorporating sound-absorbing materials and insulation layers within the unit’s casing to dampen noise and minimise transmission.
  2. Regular maintenance: Maintaining clean filters, vents, and heat exchangers will help your air conditioner run more efficiently, which can reduce noise. Verify the stability of the surface it is installed on. You should level the area or use foam to cushion the shocks if you have an uneven wall or floor that is causing vibrations.
  3. Variable Speed Technology: Inverter-driven compressors and variable-speed fans adjust their speed according to cooling demands, resulting in quieter operation and energy savings.
  4. Smart Control Features: Advanced control systems and smartphone apps allow users to adjust fan speeds and operating modes to achieve optimal comfort while minimising noise levels.
  5. Low-Noise Components: Utilising low-noise components, such as fan motors and compressor mounts, to reduce overall noise output without compromising performance.


Noise reduction in wall-split air conditioning systems enhances comfort and tranquillity within our indoor spaces. By understanding the importance of noise reduction, considering the factors influencing noise levels, and exploring innovative solutions implemented by manufacturers, we can select wall mounted AC units that deliver the silent cool we desire. Whether for our homes, offices, or commercial spaces, investing in a quiet and efficient wall-split AC system ensures that we can enjoy optimal comfort without disrupting unwanted noise.