AC Service Tools

Picture a car whose air conditioning blows warm on the hottest day of the year, with a compressor that cycles oddly and no idea whether the problem is low charge, a leak, or a sensor. You guess at a recharge, and the system still blows warm, only now with the wrong charge in it. That

Heavy duty is the easiest claim in the AC tool aisle and the hardest one to check. It is printed on aluminium manifolds that flex, on hoses with no published pressure rating, and on undampened gauge sets. The box says the words; the documents, too often, do not. So this guide ignores the words and