Everything in one box. No extra tools to buy, and you keep the kit for every clean after this one.

"Just do it yourself. It's not rocket science."
That is a real post from an Australian bargain forum, and it is right. A proper split system clean is a catchment bag, a spray bottle, a brush and about twenty minutes a unit. The only reason people hand over two hundred dollars a head is that nobody sells them the gear in one box.

Clean three or four heads with one kit and it has already paid for itself. Then you keep it, and next year costs you nothing.