5.3003.25 Refrigerant Line Inspection—Mid and High Rise

Forced Air
System Assessment and Maintenance
Desired Outcome: 
Refrigerant lines properly installed
For supporting material, see Referenced Standards.

All refrigerant lines will be insulated based on the equipment manufacturer's requirements

All insulation will be properly sealed

Optimize operation of equipment

Ultraviolet ( UV UV Ultraviolet ) protection of insulation

If exposed to sunlight, refrigerant line insulation will be protected from UV UV Ultraviolet degradation (e.g., jacket)

Install insulation so it does not degrade


Refrigerant lines will be sized in accordance with manufacturer specifications for the installed equipment

Ensure system moves appropriate volume of refrigerant

Installation quality

Refrigerant lines will be installed without kinks, crimps, excessive bends, or length

Refrigerant lines will be joined together using manufacturer-approved method(s)

Proper filter dryer(s) will be installed

Refrigerant lines will be checked for leaks following EPA EPA U.S. Environmental Protection Agency, www.epa.gov Section 608 and verified as leak free before refrigerant charging

Proper evacuation and dehydration techniques will be employed before refrigerant charging

Ensure system moves appropriate volume of refrigerant

Ensure containments do not harm the system

Ensure the system is durable


Refrigerant lines will be routed, supported, and secured to building in a manner that protects the line from damage by workers or occupants

Ensure refrigerant lines do not move, vibrate, or sag

Protect lines from damage