The answer to 'ductless system making loud noise' is that a ductless HVAC system making loud noises is often caused by issues with the compressor, fan, or refrigerant line. Common symptoms include rattling, grinding, or screeching sounds. Solutions may involve tightening loose components, replacing worn parts, or recharging the refrigerant. However, it's best to have a professional HVAC technician diagnose and repair the issue, as improper repairs can lead to further damage or safety hazards.
Ductless HVAC systems are complex, and troubleshooting loud noises often requires specialized knowledge and tools. While some basic maintenance like cleaning the filters can be done DIY, any major repairs or issues with the compressor or refrigerant should be handled by a licensed HVAC professional. Attempting DIY repairs on a ductless system can be dangerous and may void the warranty.