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How to recharge your car ac system

A “Freon recharge” should always be approached as a safety-first procedure because automotive A/C systems operate under high pressure. Refrigerant must only be added through the low-side service port, and the high-side valve should never be opened while the system is running due to the risk of sudden high-pressure release. This guide explains the safe setup, common mistakes that lead to injury or system damage, and when professional recovery, evacuation, leak checking, and recharge by weight is the better option for drivers in Miami-Dade.
 

 

Freon recharge.

To charge a system with the engine running, the refrigerant should be added to the low side of the system.

Safety precaution.

Never open the high-side hand valve with the system operating and a refrigerant can connected to the center hose. The refrigerant will flow out of the system under high pressure in to the can. High-side pressure is between 150 and 300 psi and will cause the refrigerant tank to burst.

Recovery, recycling, reclaims.

The only occasion for opening both hand valves at the same time would be when evacuating the system or when recovering the refrigerant with the system off.

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