um. if my air condition completely does not work, would that require me to replace my entire a/c system? or could it be just 1-2 things need to be changed? it hasn't worked for at least a few years now. is there a way to figure out exactly which part isn't working if there is no need to replace entire system? and about how much would it cost to replace? my dad said he went to a few places and they all costed around $1kCDN to fix. Not only that, the shops also said even if replaced, you will still need to get it fixed every yr or so. is that true? thanks.