If you look at different pressure washers you'll see 2000 psi @ 1.6 gpm and others 2000 psi at 2 gmp. As I understand it you want the one with more gpm. I have the unit linked below. I personally don't believe the 2300 psi rating but then again I'm used to a 4000 psi @ 4GPM hot water unit that I normally use. I do know with my pressure turned down on the bigger unit that without the heat on it still is a stronger unit.
I'd go the rental route and get one with a heater if possible.
https://www.homedepot.com/p/RYOBI-2-300-PSI-1-2-GPM-High-Performance-Electric-Pressure-Washer-RY142300/300405751