Hello, I have no AC in my sprayer, due to a bad leak in the high pressure hose. I have the new hose, and I was waiting on the AC guy to come and change it, vacuum out the system and charge it again. But I've been waiting to long, and it's really unbearable. So if I change it my self, and add a couple cans of coolant, will this really screw things up? I'll still have him come, and vacuum later.. But I need a solution now!! It's embarrassing spraying in my gitch.