The total cost to add refrigerant (such as R-410A or R-32) to a ductless mini-split system typically ranges from two hundred to six hundred dollars, depending heavily on the amount of gas required, labor rates, and whether the technician must first locate and repair a physical leak. Because mini-split systems operate as closed loops, refrigerant is never consumed naturally; therefore, a recharge always requires finding and fixing a breach in the flare connections or copper tubing. Simply topping off gas without repairing the leak is a temporary waste of money. Professional service involves pressure testing, evacuating lines, and weighing in the exact refrigerant charge specified by the manufacturer. You can verify fair pricing by requesting itemized quotes from certified HVAC contractors before approving work.
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