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.
Please include pictures on HOW you installed that in your Prius!!!! And WHY you did it! Since cars use the engine coolant to heat the car, a heat pump is useless in a car.