Proper Line Set Sizing for Mini-Split Systems

Ensuring the correct line set diameter is crucial for mini-split systems. These systems rely on the specified diameter and minimum length to maintain the proper refrigerant charge, ensuring optimal efficiency and performance.

Key Considerations:

• Always verify the required line set size and length in the manufacturer's installation manual before installation.

• If a pre-existing line set is in place, confirm that it meets the unit’s specifications before proceeding.

• Using an incorrect line set size can lead to poor oil return, reducing efficiency and causing compressor or control board failure. This can result in higher energy costs, system breakdowns, and homeowner discomfort.

For long-term reliability, always follow manufacturer guidelines to prevent performance issues and costly repairs.