Refrigerant Charge Weighing

Formula and source

Total charge = factory charge + per-foot adder × (line length − rated length). Per-foot adders from manufacturer line-set tables (oz/ft) by refrigerant and liquid-line diameter.

Manufacturer line-set bulletins (Daikin, Carrier, Trane, Rheem) by name.

Audience

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Related tools

• Refrigerant P-T Chart
• Superheat and Subcool
• Refrigerant Superheat / Subcooling (psig-psia toggle)

Posture

Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.