Power washing is heated water at high pressure, and that heat is what separates it from a plain cold water rinse. Oil drips, transmission fluid, grease trails, gum, and baked on traffic film break loose when the water is hot. We run commercial hot water units with surface cleaners for even passes across driveways, garage floors, walkways, loading areas, and dumpster pads, then hand wand the edges and corners the machine cannot reach.
The people who quote your driveway are the people who clean it. No subcontracted crew showing up instead.
A specific number for your slab, in writing, that does not move once we are on site.
Pressure dialed to the surface so concrete gets cleaned, not etched. 5 stars on Google says the work holds up.
Tell us the address and roughly how much concrete you have. We will measure it up and put a fixed number in writing, for free.