Best 4000 PSI Pressure Washers Available Today

Summer is prime time for pressure washing jobs. And you need equipment that can keep up. 

If you’re looking to replace your commercial grade equipment, you’re probably looking at a 4000 PSI pressure washer. 

Why 4000 PSI? These commercial-grade pressure washers are best for heavy duty cleaning jobs. 

There are a lot of 4000 PSI pressure washers on the market, so how do you choose the best one? Our top pick for the season is the Simpson Cleaning ALH4240. You just can’t beat its power and efficiency.

However, there were some close contenders as well. Here’s a roundup of our top picks.

Our Top Picks

Our Top Recommendation…

Simpson Cleaning ALH4240 Aluminum Gas Power Washer

The Simpson Cleaning ALH 4240 is hands-down our top recommendation for power washers of this caliber. 

Simpson ALH4240 pressure washer

We gave this 4000 PSI pressure washer the best overall rating. Why? This powerful machine is all about ease of use and powerful performance. It’s the perfect combination of quality and efficiency. 

We’re betting that adding this monster to your fleet not only speeds up your toughest jobs, but also improves the overall clean. 


The sturdy aluminum cage cuts the weight of this pressure washer in half. Aircraft-grade aluminum frame makes this 4200 PSI pressure washer one of the lightest on the market. The frame also features a padded buffer to prevent accidental damage from bumps. It’s lightweight without sacrificing durability. 

As if the lightweight features wasn’t enough of a selling point, this unit can tackle any terrain with 13 in. premium pneumatic tires that allow you to move with ease throughout the job site.  


We didn’t give this pressure washer best overall just because it’s lightweight (though, it’s absolutely a perk). The speed of this 4200 PSI pressure washer is incomparable. The unit is equipped with a Honda engine. The GX390 motor and the “best in class” CAT pump. 

This lethal combination cuts pressure washing time in half. The Simpson features 16,800 cleaning units; that’s a high-end professional CU for half the price. 


The efficiency of this machine doesn’t stop there. It’s also compatible with hot and cold water. 

Versatility was top of mind when the Simpson team created this pressure washer. The efficiency of the Simpson is unmatched, but so is it’s ease of use. 

This machine comes equipped with a psi adjustable wand and five quick-connect nozzles for quick pressure adjustments. It also comes equipped with a 50 ft steel-braided hose.

The 50ft steel-braided high pressure hose allows you to reach those hard-to-reach spots. You won’t have to worry about blockage or damage because the hose is abrasion and kink resistant.

Accessory Storage Features

The best part? The Simpson features on-board storage, so you can travel through the job site with all the accessories and wands you need right on the unit

Best Use

This pressure washer is great for heavy duty commercial, deck, patio, and cement pressure washing. 

Warning: Don’t use this pressure washer on your home’s siding. It will cause some strip paint and cause serious damage. 

Simpson’s product deserves the Best Overall rating in our book. Not only is this 4200 PSI pressure extremely powerful, but it’s many other features allow pressure washing technicians to move through the job site with ease without having to stop to change pressure, connect to a new water source, or worry about a power cord, and much more. Every professional pressure washer should have a Simpson Cleaning ALH4240 Aluminum Gas Pressure Washer in their fleet.

If you’re looking for a lightweight, easy to use, commercial pressure washer this is the pressure pro for you. 

See full specs on Amazon

Powerful, But Easy to Use

Champion Power Equipment 4200-PSI 4.0-GPM Commercial Duty Low Profile Gas Pressure Washer

champion 4000 psi pressure washer

When choosing a candidate for Best Design, this Champion model was the obvious choice. This pressure water has what you need when you need it. We love it for its cleaning power and user-friendly design. 

Its biggest features are handy storage solutions for your hose, nozzles, and pressure washing wand. Champion is a great mid-range option for homeowners and professionals; the combination of its power and design features will make it the trusty steed of your pressure washing fleet. 


The frame is made of steel, so it is a little heavier than the Simpson. You’re looking at about 125 pounds To compensate for the heavy weight, Champion designed a wheelbarrow transport mechanism to help with weight distribution. 

The comfort grip also reaches hip height, so you can give your back a break. 


The Champion model, like Simpson, features 16,800 cleaning units, 4200 PSI, and 4.0 GPM. Unlike the Simpson, this Champion model is only compatible with cold water flow. The Champion is in the higher PSI offerings for the price range. But the Simpson is only $200 more and will deliver the same power. 

Champion created their own engine for this model. Although it’s not a brand name engine, it’s a high performer and made in the U.S. 


The Champion’s tires are 10 inches compared to Simpson’s 13 inches. No shame, though. The machine is stable, and you will be able to navigate easily through mild to rough terrain. 

Just keep in mind the roughest terrain may be more difficult for the Champion versus the Simpson. The Simpson’s 13” wheels provide for added stability in the rougher terrain areas. So, it’s worth considering if you’re roughing it on the job.  Like the Simpson, the Champion also features a 50’ abrasion and kink-resistant hose. 

Accessory Storage Features

The Champion is better, if not the best (in our opinion), for it’s storage solutions. You can expect straps to store the pressure hose, side hooks for easy storage of the spray gun and wand, as well as nozzle storage near the handlebar on this handle. 

The design team at Champion knocked this model out of the park. The design allows for quick access and handling on the job. 

If design and on-the-job organization is important to you, the Champion model is the pressure washer for you. 

Best Use

Like the Simpson, this pressure washer is best for heavy duty commercial, cement, deck or patio pressure washing needs.

See full specs on Amazon

Affordable & 4000+PSI

TEANDE 4200 PSI Pressure Washer 

Looking for an affordable and powerful pressure washer? Look no further. The Teande model delivers on both.

TEANDE 4200PSI pressure washer

This pressure washer is perfect for smaller shops and home pressure washers. We like the Teande for its money savings + power combination. This is one of the best on the market for under $500. 


The Teande features a wheelbarrow push design like the Champion, as well as the same, ergonomic handle height. Nothing will beat the lightweight nature of the Simpson, but the Teande will work just fine for wheeling around the yard in the afternoon. The Teande features 10” wheels that will also make it easy to move it around your property or commercial space.


The Teande features 4200 PSI with a max 3.0 GPM. The GPM on this model is lower than both the Simpson and Champion. Though, the PSI is there. The cleaning units are 12,600. 

It’s nothing to turn your nose up at, but it could take you longer to cut through stubborn dirt and stains with the Teande than the Champion or Simpson. 


The hose on the Teande is only 20 feet long, as opposed to the Simpson and Champion’s 50-foot hoses. If you’re pressure washing in a small space, hose size won’t matter too much for you. 

Something special about Teande’s pressure washer is the addition of two soap tanks. You can adjust the portions as you want, whereas the Champion and Simpson automatically ratio-out and mix the detergent and water for you. It all depends on which detergent injection system you prefer. 

Accessory Storage Features

This model features five nozzles with the quick-connect system and convenient nozzle storage, similar to the Champion model. Teande’s storage solutions are almost a direct copy of the Champion, with one difference: Teande does not feature straps to store the hose conveniently. Instead, the Teande comes with the standard hang tab to loop the pressure hose around. 

Best Use

Unlike the Champion and Simpson, the Teande can be used for residential siding as well as deck, patio, and cement. This pressure washer likely won’t produce the desired results for heavy-duty commercial cleaning projects. But this is a great option for homeowners.

See full specs on Amazon

Powerful & Reliable

Generac 6565 Commercial Pressure Washer

The Generac has brand name recognition but it backs it up with its powerful PSI and GPM. Generac brand loyalists won’t be disappointed with Generac’s 4000 PSI pressure washer option. It garners our Best Mobility rating because of its superior wheel design.

generac 4000 psi pressure washer


Portability is where this machine shines. It features a wheelbarrow style push mechanism and a handle that reaches hip height. You’ll easily maneuver around your home or job site. 

It’s the heaviest pressure washer yet, weighing in at 147 lbs. But you shouldn’t have to worry about moving it around. 

This 4200 PSI Pressure Washer features 12-inch wide wheels with grip technology for ease of mobility across a variety of terrains. The Generac’s wheel size ranks second behind Simpson and ahead of Champion.


Just like the Simpson, this Champion pressure washer features 4200 PSI with 4.0 GPM, and 16,800 cleaning units. You’ll complete your pressure washing job quickly with this high pressure system. 

4200 PSI and 4.0 GPM, combined with a 420cc Generac OHV engine system, makes this pressure washer a powerful machine. Generac is known for their high-quality, reliable, and efficient engines. Talk about pressure! This Generac pressure washing machine comes the closest to Simpson power wise (and it’s $600 less than Simpson!)


This Generac pressure washer model features a 50-foot,’ durable, non-marring hose that won’t leave scuff marks on siding, fencing, or cement. What stands out about this 4200 PSI pressure washer is the addition of an AR Commercial-Grade Triplex Brass Head Pump. Triplex pumps are 90% efficient and run cooler than other pumps. Triplex pumps are the highest quality pressure pumps on the market with the longest life span. 

The pump on this model rivals Simpson’s CAT pump. The Generac pressure washer also features a folding handle and a welded roll cage frame for easy storage and transport. 

Accessory Storage Features

The Generac pressure washer has a quick-connect five pressure nozzle system. Like the Teande, this pressure washer does not come equipped with hose straps, but the hose can be looped around the hang tab for easy storage.

Best Use

This commercial, high-power pressure washer is best used on cement, patios, decks, and heavy duty commercial projects.

If you’re looking for all the power features of a Simpson (minus the sturdy 13” tires) at a lower price, then this model is for you.

See full specs on Amazon

Expensive, but Tough

NorthStar Gas Cold Water Pressure Washer

This 4000 PSI pressure washer is the most expensive of the bunch. But it will get the job done on your toughest pressure washing jobs. 

northstar pressure washer 4000 psi

This machine is not for the average user. So, skip this one if you’re looking for a home pressure washer. If you’re pressure washing industrial construction or farm equipment, keep reading.


This pressure washer features 15-inch wheels, a push down style steel cart, and a roll cage to help you easily travel over the toughest terrain. You can maneuver this pressure washer through rugged construction sites or around the farm. 

It’s the heaviest of the five pressure washers we reviewed today, weighing in at 191 lbs.


Although this pressure washer features a lower PSI and GPM than the Simpson, Champion, and Generac models, it contains a Honda GX390 389 OHV engine known for it’s quiet, reliable, and powerful performance. 

The engine is designed for extremely demanding commercial grade applications. We’re looking at a 4-stroke horizontal OHV that keeps the engine cool, increases efficiency, and has an optimal power transfer. 


This monster of a pressure washer features a 50ft steel braided hose. It also features a CAT directed drive triplex pump like the Simpson. 

Remember: the CAT triplex pumps are superior, long-lasting pumps meant to increase efficiency and decrease maintenance costs. It also comes with five quick-couple professional nozzles ( a mainstay across all the pressure washer units we reviewed today). 

NorthStar added a pressure-adjusting nozzle to the unloader valve to switch between high and low pressure jobs with ease.

Accessory Storage Features

It’s clear that the Champion design team did not work on this pressure washer. But it’s not a total loss. 

Despite its lack of design innovation, this pressure washer features easy-to-access nozzle storage and a hang tab for your pressure hose. Unlike the Generac, the North Star push handle does not fold down for easy storage. 

Best Use

This NorthStar model is best used for the toughest projects. 

If you’re staring down the barrel of extremely dirty construction equipment or farm equipment that hasn’t been washed all year, this is the pressure washer for you. It comes in as the most expensive and heaviest of the options, but it’s 15-inch wheels and push down style cart handling make this pressure washer the one to use at the job site or on the farm.

See full specs on Amazon

Pressure Washer FAQ

Q: Why a 4,000 PSI Pressure Washer?

A: Most residential and home siding pressure washers cap out at around 2000 PSI, with higher-end models reaching 3000. You’ll likely get what you’re looking for out of a nice electric pressure washer when cleaning your home. But this isn’t enough for most heavy duty jobs. 

Contractors, landscapers, and industry pros need a 4000+ PSI gas pressure washer in order to tackle tough stains on hard surfaces. 

A 4000 PSI pressure washer is ideal for heavy equipment, concrete surfaces, brick walls, construction sites, stripping paint and lifting oil stains.

Again, a 4000 PSI pressure washer should not be used on house siding; 4000 PSI is strong enough to cause some serious damage! 

Q: What Design Features Should You Look For?

A: The features you’re looking for really depend on that type of job you’re going to do with your pressure washer. We’ve listing the most important features below:

  • Maneuverability: If you didn’t notice, these machines are heavy! It’s important to find a machine that you can easily maneuver around your home, job site or farm. Generac’s 12-inch wheels, hip height bar, and wheelbarrow push mechanism make it the best in class for maneuverability.
  • Power: The Simpson model stands out from the crowd with its 4200 PSI, 4.0 GPM, Honda motor and CAT pump. This combination will cut through the toughest surface stains. 
  • Ergonomics: Don’t break your back lugging these machines around. Champion has designed an extremely ergonomic machine that takes the pressure off you and your back. 

It’s important to note that these pressure washers range from middle tier to high tier in terms of quality and power. 

Whichever machine you choose, pressure washers of this caliber should be powerful, yet comfortable to use. 

Q: Which Extra Features Are Worth It?

  • Ergonomic features: Manual labor is tough enough. If you’re going to be pressure washing for years to come, it’s important to do so safely and with your comfort and safety in mind. Splurging on a pressure washer that offers ergonomic design features, such as a hip height handle to prevent stooping and a lightweight frame, will pay off down the road.
  • Low-oil shutoff: It’s hard to know when the oil is low in your pressure washer. This feature prevents any unwanted damage due to low oil by bringing the whole machine to a stop. 
  • A longer hose: A longer hose will allow you to travel farther with your pressure washer without having to consider where the next water source is. You can reach those hard-to-reach places with ease. 
  • A set of interchangeable nozzles: Interchangeable spray nozzles are vital. If you only get one thing on this list, it should be interchangeable nozzles; they allow you to change the angle at which water comes out of your hose. Each nozzle tip is designed for a specific surface or object. More nozzles = more things you can pressure wash!

Our top pick is the Simpson Cleaning ALH4240 Aluminum Gas Pressure Washer for its power and reliability. The Simpson is unmatched it’s combination of power, 13 inch tires, and lightweight design. The CAT triplex pump system is just a bonus at this point with everything else the Simpson Cleaning ALH42420 has to offer. 

Not only will you travel over rugged job site terrain or hilly farm terrain, you won’t have to worry about where the next water source is because of its 50’ hose. If you’re looking for a reliable pressure washer that is sure to get the job done, then Simpson is the pressure washer for you. 

Our runner up is the Champion Power Equipment 4200 PSI Pressure Washer for its innovative design. We’re impressed by Champion’s wheelbarrow push mechanism, hip height bar, and its highly functional and organized accessory storage options. It’s pressure, ergonomic design, and price point make it a great option for those looking for a step down from the Simpson. 

Choosing the right pressure washer is all about your priorities. Whether you’re looking for a simple electric start, built-in hose reel, or powerful adjustable pressure, make sure to narrow your search by those features. We hope that our recommendations help you find the perfect high-power pressure washer for you.