What are the cons of pressure washing?

What Are the Cons of Pressure Washing?

Quick answer: The biggest cons of pressure washing are injury risk, potential surface damage, equipment costs, water waste, and noise — with pressure washing injury being the most serious, since the spray can break skin and cause wounds that look minor but require medical attention. Most of these downsides are preventable with the right technique, PSI, and safety gear, which is the focus of this guide.

1. Pressure Washing Injury Is a Real and Underestimated Risk

This is the con that deserves the most attention. Pressure-washer injuries sent an estimated 6,057 people to the emergency room in 2014 alone, according to Consumer Reports’ analysis of federal injury data, and 14% of those ER visits resulted in hospitalization.

The danger isn’t just the force of the spray — it’s that a high-pressure stream can inject water (and whatever it’s carrying) under the skin, a wound type the CDC says is routinely underestimated in severity.

Forum accounts back this up in vivid detail. On a TractorByNet thread titled “Pressure Washer Dangers”, one member described how a pressure washer gun bounced off a chair and swiped across their forearm, taking off skin and leading them to adopt a strict two-hands-on-the-wand rule afterward. Another member on the same thread described reaching down to wipe mud off an ATV with their hand while using a 1,600 PSI electric washer; the stream grazed their wrist and removed the top layers of skin, an injury that burned far worse than it looked and seeped for days before scabbing over. A third commenter on that thread put it bluntly: at maximum pressure, with a narrow nozzle at close range, “you could lose a piece of you.”

Official safety guidance agrees the zero-degree nozzle is the biggest culprit. Consumer Reports has specifically urged manufacturers to remove it from residential units entirely, and recommends that anyone who owns one get rid of it. If your pressure washer comes with a zero-degree nozzle or adjustable setting, get rid of it or avoid using it to reduce the chance of injury. 

If you want to know which surfaces and nozzle types are simply too risky to use at all, see our guide on what you shouldn’t pressure wash.

Safety goggles + glove kit for pressure washing →

2. Pressure Washing Can Damage the Surface You’re Trying to Clean

The second major downside is property damage. Too much PSI, the wrong nozzle, or holding the wand too close can etch concrete, strip paint, split wood fibers, or blast mortar out of brick joints. ‘We cover this in detail, including a real contractor forum account of a driveway permanently marked by a careless pass, in our guide is pressure washing driveways a good idea. The fix generally isn’t avoiding pressure washing altogether — it’s matching PSI and nozzle angle to the surface, which our pressure washer technician recommendations guide covers in more depth.

3. Equipment Can Malfunction — Sometimes Dangerously

Pressure washers are also mechanical devices that can fail. In a report, the Consumer Product Safety Commission announced a recall of more than a quarter-million Ryobi electric pressure washers after 41 reported explosions and injuries, caused by a capacitor that could overheat and burst, ejecting parts with enough force to injure the user or bystanders. More than a quarter million Ryobi electric pressure washers were recalled after 41 explosions and injuries, caused by a capacitor that could overheat and burst, ejecting parts and posing a serious injury risk. 

That’s a reminder to register any pressure washer you buy with the manufacturer and keep an eye on recall notices — something that applies across brands. Our guide to brands known for durability also touches on which models tend to hold up best over time.

4. Water and Utility Costs Add Up

Pressure washers use a lot of water fast, especially gas units running at higher GPM. Running one for an afternoon can meaningfully bump a water bill, and if you’re paying a pro instead, that cost shows up as the quoted price. 

See our breakdowns of how much pressure washing usually costs and the full cost, PSI, and technique guide for driveways for real numbers.

5. Noise, Electrical Hazards, and Setup Time

Gas units are loud enough to need hearing protection for extended use, per occupational safety guidance, and electric units carry their own risk: never use one near unprotected outlets or electrical equipment, and always test the GFCI before starting. 

Testers should always test the ground fault circuit interrupter before using a pressure washer and never allow it to contact electrical equipment. Add in hose setup, detergent mixing, and drying time, and pressure washing a full house exterior can easily eat a weekend. 

Our beginner’s guide to using a pressure washer for the first time walks through the full setup process so you’re not improvising mid-job.

6. It’s Not a One-and-Done Fix

Pressure washing removes surface grime, but it doesn’t kill mold or mildew spores at the root, which means dark stains can return within months without a proper cleaning solution.

Our guide on removing mold and mildew from concrete covers the chemical side that pressure alone can’t solve.

How to Minimize These Downsides

• Never use a zero-degree nozzle; stick to 25° or 40° for most surfaces.
• Always keep both hands on the wand and maintain your footing.
• Wear eye protection, closed-toe shoes, and long pants/sleeves.
• Register your pressure washer and check for recalls periodically.
• Match PSI to the surface — our PSI vs. GPM guide and complete pressure washing gun guide help you choose the right setup from the start.

Sun Joe SPX3000 — lower-pressure electric option for safer home use →

Bottom Line

Pressure washing’s cons — injury risk, surface damage, equipment failures, water use, and noise — are all real, but nearly all of them come down to technique and equipment choice rather than the method itself. Used at the right PSI with the right nozzle and basic safety gear, it remains one of the fastest, most effective ways to clean exterior surfaces.