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Additional Pipe Length Charge Calculator
Quickly calculate the extra refrigerant needed when your pipe run exceeds the manufacturer's standard length. Enter the additional metres and the per-metre charge rate.
Why Additional Pipe Length Matters
When the interconnecting pipe run on a split system exceeds the standard length included in the factory charge (typically 7.5 m), additional refrigerant must be added to maintain proper system performance.
The additional charge per metre depends on the refrigerant type, pipe diameter, and manufacturer specification. Always refer to the installation manual for the exact value.
Frequently Asked Questions
What is the standard pipe length for split AC?
Most manufacturers include a factory charge for 7.5 m of pipe. Any pipework beyond this length requires additional refrigerant per the manufacturer's specification.
How do I know the charge per metre for my unit?
Check the installation manual. It lists the additional refrigerant per metre for each pipe diameter. Typical values are 20–40 g/m for residential systems.
Additional Pipe Length Charge Calculator
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