A ductless system in good working condition should emit only a soft humming sound. When you hear loud sounds that you’ve never encountered before from your system in Clarksville, IN, its parts may be faulty. Below, we will cover some common problematic ductless HVAC system noises and what they mean.
1. Rattling
Your ductless mini split’s components will eventually wear out with time. These worn-out components may become loose and hit the cover panel repeatedly, causing a rattling noise.
Also, the screws on the cover panel may loosen over time and produce a rattling noise as the system runs. A rattling sound can also occur when sticks or debris enter your ductless system’s outdoor component and collide with the fan blades. Schedule regular maintenance services so that a technician can check for worn-out components, tighten loose connections, and clean the system.
2. Hissing or Whistling
The air entering your ductless mini-split first passes through an air filter. The filter catches the impurities in the air, ensuring the air that returns to your living space is clean and fresh.
The pollutants build up on the filter over time, restricting air from entering your system. As the system draws air through the blocked filter, you’ll hear a whistling noise. Change your filter regularly to alleviate airflow issues.
A hissing noise is likely a sign of refrigerant leaks. For a refrigerant to release the heat absorbed from your house into the environment, its temperature must be higher than the environment’s temperature because heat moves from a region of high concentration to an area of low concentration. The fluid passes through a compressor for the component to raise its pressure and temperature.
If the fluid encounters damaged sections of the refrigerant lines, it can escape through these parts. The escaping high-pressure refrigerant causes a hissing noise.
3. Banging
A banging noise suggests that your ductless mini-split has loose components. This noise occurs as these loose parts hit other components.
Whenever you detect alarming noises from your system, turn it off immediately to prevent the underlying issue from worsening. Then call the ductless system experts at Lamb’s Heating & Air Conditioning to schedule an inspection. Our team will respond promptly to restore your system’s efficiency.
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