How much should I pay to replace my a/c compressor IF that is what's wrong? on 2000 Toyota Solara

A/C stopped working - just blows warm air. I think they quoted me like $800 to replace much should I be paying please? Thank you!

Asked by for the 2000 Toyota Solara
you should repl the entire system do to contamination internally. and flush system and condensor approx 2000