The pressure washer you buy shapes which jobs you can take and how fast you finish them. New operators often focus on the PSI number on the box, but flow rate and the right accessories matter just as much.
PSI vs GPM
PSI (pounds per square inch) is how hard the water hits. GPM (gallons per minute) is how much water flows. Pressure breaks dirt loose, but flow is what rinses it away, so GPM has a big effect on how fast you clean. Many professionals multiply the two to compare machines, and for flat concrete work, a machine around 3,000 to 4,000 PSI with 4 GPM or more is a common starting point.
Gas or electric?
Most residential and commercial pressure washing businesses use gas-powered, belt-drive or direct-drive machines because of their higher flow. Electric units are quieter and fine for light work, but usually too slow for driveways and commercial flatwork. If you start small, a solid gas machine with a reputable pump is the usual first buy.
The surface cleaner is a must
A surface cleaner is a round spinning attachment that cleans flat concrete evenly and much faster than a wand, without the stripes customers hate. For driveways and sidewalks, it is the single biggest time saver you can buy.
Soft washing for houses and roofs
High pressure can damage siding, wood, window seals and especially roofs. Soft washing uses low pressure plus cleaning solutions to kill mold, mildew and algae, then rinses gently. Most house washing is done this way. You can start with a downstream injector on your pressure washer, then add a dedicated soft wash pump and tank as house washing grows. Protect plants, pets and people from runoff, and follow the label on every chemical.
Starter equipment list
- Gas pressure washer with a quality pump
- Surface cleaner sized to your machine
- Pressure hose, 100 to 200 feet, and a hose reel
- Quick-connect nozzles and an extension wand
- Downstream injector or a soft wash setup
- Water tank if job sites lack good water supply
- Safety glasses, gloves, boots and hearing protection
- Trailer or truck setup to carry it all
Rules and water
Some cities and states regulate wastewater from pressure washing, especially on commercial sites where oil and grease may run into storm drains. Commercial jobs may require water recovery equipment. Check local rules before you take on gas stations, restaurants or parking lots.
Get instant quotes with the starter kit
Our pressure washing starter kit includes instant quotes by driveway, deck and house size, a before-and-after gallery, seasonal reminder emails and a homeowner and commercial price sheet. See our guide to pressure washing prices, then vote for the pressure washing kit. Voters get 20% off at launch.
Leave a Reply