Ok, my mistake. When yousaid "blow" I thought you ment "blow by" a completely different thing... The cheapest thing you can do to get your AC working cooler is to go to an auto parts store and get a simple recharge can. These come with a hose and intructions. Look here: advanceauto.shoplocal.com This is what you want. It might work and only costs $10 so its worth a try.