At the end of last summer my air conditioner was taking forever to cool. I turned it on a few weeks ago and the cool had gone. I was thinking about when I could get it to a garage and how much it would cost when I saw a commercial on TV for A/C Pro and decided what the heck. I'll try it. Went to AC Pro's site to look up the location of my low pressure service port. Watched their youtube video. Bought a can at Walmart for $35. Took 15 minutes to recharge and now my air is as cool as the day I bought the car. I was thrilled. I checked out some others but A/C Pro's quality, and reviews, was the reason I paid a little more money for theirs. No, I'm not a salesman. Just a friendly heads up for other members who may need cooler air.