Replacing A/C Compressor (depressurizing system?)

[winston856]

Hello everyone, I'm going to be replacing my A/C compressor in my '07 Sedan and I had a question or two.

First a little backstory: The compressor has not functioned in at least 3 years now (likely more). The system was diagnosed by toyota because it wasn't functioning and they came to the conclusion that the compressor was the issue.

I'm planning to purchase a new (re-manufactured) unit off rockauto.com and just replace it myself to save on cost (toyota wants around 2k for parts/labor).

I was just going to dive in but I'm worried about pressure in the system. I've wrenched on cars plenty of times but never with the HVAC system.

Is there worry of Freon escaping forcefully when I disconnect the hoses from the compressor? I don't know how or even if I need to depressurize the system. I see that term referenced but never heard how to properly do that? That's really my only question, I know about matching the oil level in the new compressor to the level the one in there currently has.

Can anyone offer some tips, knowledge or advise me on this procedure? It's much appreciated!