Repairing a refrigerant leak in a ductless mini-split system typically costs between two hundred and eight hundred dollars, depending heavily on the exact location of the breach, labor rates, and the amount of replacement refrigerant required. If the leak is located at an accessible outdoor service valve flare connection, a technician can easily tighten the fitting, pressure test the line, and top off the gas charge on the lower end of that price spectrum. However, if the leak is buried inside an internal evaporator coil or requires brazing cracked copper tubing, costs increase significantly. You can evaluate pricing by obtaining written contractor estimates. You can verify fair market value when itemized quotes separate labor from refrigerant costs and pressure testing confirms a sealed system.
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