The ones that make it "easy" aren't the ones you want. All you need is a couple of hundred in equipment and you can have it to work on your other AC items. Like gauge and vaccum, line cutter, flare tool. The ones that make it easy charge a lot more and you don't have anywhere near as much flexibility. This ACiq unit has a 12 year warranty. I bought a no name for our house and it's been flawless, approaching 3 years. For a new house, I want a premium brand like ACiq.