Preventing corrosion or damage to the mini split air conditioner's connecting lines (line set) is critical to keeping the system running consistently over time. Taking the following precautions can significantly reduce this risk:

• Use high-quality fittings: Use copper tubing and other fittings that are highly resistant to corrosion. Choose good-quality connections and insulation, which can extend the life of the piping.

• Protect and insulate: Use UV protective sleeves and other types of insulation to cover copper piping, especially in outdoor sections, to protect the piping from environmental factors such as direct sunlight, rain, and salt spray.

• Regular Maintenance: Perform regular system inspections, including visual inspections and the use of leak detection tools. Identifying and fixing small problems promptly can prevent them from developing into larger problems.

• Extra precautions: In areas with high salt or humidity, take extra precautions, such as more frequent inspections and the use of specialized anti-corrosion coatings.