The first couple of months I had it, I was using a garden hose attached to a Y fitting at my spiggot which was just a pain to have to constantly connect and disconnect and coil up the hoses, etc. I knew I had a day off coming up that I had purposely scheduled to do a bunch of shop maintenance and some much needed deep cleaning, so I measured and sketched out what I would need to run a line from the supply line going to the water heater which was also in the garage then priced everything out and it ended up costing so little using PVC. The biggest expense of the whole thing which included the threaded disconnect, a shutoff valve and all the fittings and lengths of pvc, was the SharkBite coupler that attaches to copper on one end and pvc on the other. It was $14.00! But, I had to have it.
So nice having the dedicated supply line! And yes, it's on the same level of game changer as the DA was to the industry! It also greatly reduces the stress associated with trying to get the car dried before the water evaporates and leaves the dreaded water spots. No, seriously, for those of you who have not been to AZ in the summer, it's hot. We all know that. But along with the heat is the super low humidity, like 7-15% on the hottest days which adds to the speed at which the water evaporates leaving the detailer frantically trying to dry the car in a race against the elements. It's a serious issue due to how ridiculously hard the water is here. Like I said in a reply above, the water here averages between 750-800 PPM on any given day so you not only get water spots, you get thick, mineralized spots that are difficult, at best, to remove even if they've only been there for a few mins.
Congrats on the new install.
Here's a cool tip for you:
Put a gal or so of DI water in a clean bucket and grab a glass MF towel. Next time you're doing the final wipe down, dip the glass towel in the bucket and wring it out thoroughly then hit all the glass one last time. They will literally be sparkling when you deliver the vehicle to the customer.