Hertz at the PHX is located in a single, consolidated rental car center; I assume there is a designated place for taxis to drop off passengers. Please see the following for the details. https://www.skyharbor.com/ground-tra...n/rental-cars/

Note that there is a free Sky Train that one can take to the rental car center; I was staying at the Crowne Plaza which is basically next to the first stop at 44th and Washington. I also picked up my car first and drove back to the hotel to collect my +1 and our luggage.