Best Gas Pressure Washer Under $400

If you’re looking for a great gas pressure washer that won’t break the bank, you’ve come to the right place.

In this article, we’ll take a look at the best gas pressure washer under $400. We’ll discuss their features, pros, and cons, and help you choose the right one for your needs.

So whether you’re looking for a powerful machine to tackle tough jobs or a more budget-friendly option, we’ve got you covered.

Our Process

It can be tough to read through 100s of customer reviews to buy something online. Our process is simple: We read tons of reviews from customers that are already using these products. And then, we produce a comprehensive review based on that research, saving you tons of time and effort. 

Let’s dive in.

Best Gas Pressure Washer Under $400

SIMPSON Cleaning 3200 PSI Gas Pressure Washer

best gas pressure washer under $400

The SIMPSON Cleaning MSH3125 MegaShot 3200 PSI Gas Pressure Washer is one of the best gas pressure washers under $400.

It features a Honda GC190 engine and can generate up to 3200 PSI of pressure.

Plus, it has a 2.5 GPM flow rate, making it ideal for cleaning outdoor surfaces quickly and efficiently.

A 2.5 GPM pressure washer is ideal for homeowners since it generally works pretty efficiently.

You can use it for a variety of applications, including:

  • Decks
  • Patios
  • Outdoor furniture
  • House siding
  • Prepping home exteriors for painting

Welded steel frame construction with a powder-coated finish adds durability

In addition, the steel frame of this machine is welded and powder-coated for added durability.

With its lightweight design, it’s easy to move around and transport from one job to the next. You can take the pressure washer with you wherever you go.

However, the handle of the pressure washer might be a little small if you’re a tall guy/gal.


  • Portable
  • Durable
  • Powerful
  • Reliable customer support


  • The handle might be a little too short for some

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Generac 2800 PSI Gas Powered Pressure Washer

Best gas pressure washer under $400: number two

When it comes to the best gas pressure washers under $400, the Generac 6922 is hard to beat.

This powerful machine delivers 2,800 PSI of cleaning power and 2.4 GPM of water flow, making short work of even the most challenging jobs.

This means you can effectively clean:

  • Patio Furniture
  • Decks
  • Driveways
  • Cars (Especially tires and rims)
  • Cement and bricks
  • And, more

The integrated detergent tank holds up to 1 gallon of soap or other cleaning solution, making it easy to apply just the right amount of detergent for each job.

The ergonomic design makes this pressure washer comfortable to use, even during extended periods of use.

Best of all, the Generac 6922 is backed by a 3-year warranty, so you can rest assured that it will stand up to years of heavy use.

Moreover, the 10″ never-flat wheels on this machine mean that you don’t have to worry about replacing tires or fixing flats. They also make it easier to move the pressure washer around, even over rough terrain.


You’d need to be a little careful with the exhaust, otherwise, it could burn the hose

Plus, the hose hanger seems a little cheap


  • Powerful (2800 PSI)
  • Engine starts easily
  • The detergent tank comes in handy
  • Value for money


  • Possibly cheap hose hanger

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SIMPSON Cleaning 4200 PSI Gas Pressure Washer

SIMPSON pressure washer

If you’re looking for a powerful and reliable gas pressure washer that won’t break the bank, the Simpson Cleaning PS4240 PowerShot 4200 PSI Gas Pressure Washer is a great option.

Powered by a Honda GX390 engine, this pressure washer can deliver up to 4.0 GPM of water flow, making it ideal for tackling tough cleaning jobs.

The powerful engine makes it great for businesses focusing on:

  • Deck cleaning
  • Wood restoration
  • Paint preparation
  • And, all other professional services

Plus, it comes equipped with a host of features that make it easy to use, including an adjustable pressure nozzle and a high-pressure hose.

The 13-inch premium pneumatic tires let you move this machine around without a problem.

Probably the only issue is the difficulty you might face while gauging the oil level.


  • Super powerful
  • Effective for the toughest of stains
  • Comes with an adjustable pressure nozzle
  • Thermal relief to prevent overheating
  • Pneumatic tires make it easy to move around


  • Difficult oil measurement

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SIMPSON Cleaning Aluminum Gas Pressure Washer

SIMPSON gas powered pressure washer

When it comes to pressure washers, Simpson is a name that you can trust.

The Simpson Cleaning ALH3425 Aluminum Gas Pressure Washer Powered by Honda GX200 is a top pick for those looking for a quality machine that doesn’t break the bank.

This pressure washer delivers 3600 PSI of power at 2.5 GPM, making it perfect for a variety of cleaning tasks around the home or business.

Plus, the 10″ premium pneumatic wheels on it make it easy for you to move the machine around between jobs.

In addition, there’s an oil level indicator, so you won’t have to use a dipstick to gauge the oil level.

(SS of oil level indicator)

What’s more, the pressure washer can be used for applications like:

  • Deck cleaning
  • Wood restoration
  • Paint preparation
  • Graffiti removal
  • And, more

However, the packaging in which the pressure washer is delivered by SIMPSON might be a little flimsy.


  • Suitable for home and business use
  • Easy to move (Thanks to the pneumatic tires)
  • Very powerful
  • Easy to use
  • Small and lightweight


  • Possible flimsy packaging

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Generac 8874 2900 PSI Residential Pressure Washer

Generac gas pressure washer under $400

If you’re looking for a powerful gas pressure washer that’s easy to use, the Generac 2900 PSI 2.4 GPM Residential Pressure Washer is a great option.

Generac’s OHV engine is one of the most powerful on the market. With its high output, this engine is able to deliver an impressive amount of pressure, making it perfect for tackling tough cleaning projects.

It has an easy-to-pull trigger and comes with a Quick-Change Nozzle, so you can quickly switch between different nozzle tips.

And the fact that it holds the spray gun will ensure that the gun is protected while in transit and during storage.

However, a customer reported that the spray handle adjustment dial valve leaks.


  • Powerful Generac’s OHV engine
  • Easy-to-pull trigger
  • Quick-change nozzle
  • Holds the spray gun


  • Possibly leaky spray adjustment valve

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This was all about the best gas pressure washer under $400; let’s now talk about what factors you should look at while selecting a pressure washer under this price point.

Best Gas Pressure Washer Under $400: Buyer’s Guide

Why Buy A Pressure Washer?

A pressure washer can make cleaning your car, deck, or patio a breeze – and they’re not just for professionals. If you’re looking for the best gas pressure washer under $400, here are four reasons to buy one.

First, pressure washers can save you time and energy. You won’t have to scrub as hard or as long to get surfaces clean. Second, they can help you achieve a deeper clean. Pressure washers blast away dirt, grime, and other build-up that regular cleaning can’t remove.

Third, pressure washers are versatile tools. You can use them for a variety of cleaning tasks around the house – from washing your car to power washing your deck. And finally, they’re relatively affordable.

Quick Pressure Washer Safety Tips

When it comes to pressure washers, safety is always the top priority. Whether you’re using a gas or electric pressure washer, there are a few safety tips you should always keep in mind.

First and foremost, always make sure to read the manufacturer’s instructions before using any pressure washer. This will ensure that you’re using the machine correctly and safely.

When you’re ready to start washing, always point the nozzle away from yourself and anyone else in the vicinity. You should also be careful not to aim the nozzle at animals or delicate surfaces that could be damaged by the high-pressure stream of water.

Finally, always make sure to turn off the pressure washer when you’re finished using it. This will prevent any accidents or injuries from happening while the machine is not in use.

Selecting Gas or Electric

If you’re looking for a powerful pressure washer to tackle big jobs, you’re probably wondering if a gas or electric pressure washer is the better option. Here’s a look at the pros and cons of each type of pressure washer to help you decide which is the best fit for your needs.

Gas pressure washers are more powerful than electric models and can handle tougher cleaning jobs. They’re also fairly portable, so you can take them where you need to go. The downside is that gas pressure washers are louder and produce fumes, so they’re not ideal for use in enclosed spaces.

Electric pressure washers are quieter and don’t produce fumes, making them a good choice for indoor use. They’re also lighter weight and easier to maneuver than gas models.

What Do You Look for While Shopping for a Pressure Washer?

When choosing a pressure washer, it is important to consider the machine’s purpose.

For light-duty tasks such as washing a car or cleaning decks and patios, a lower-powered machine will suffice.

Whereas for tougher jobs such as stripping paint or removing stubborn dirt, a more powerful machine is necessary.

It is also important to consider the machine’s features. Some pressure washers come with attachments that make them more versatile, such as soap dispensers or rotary brushes. Other features to look for include adjustable pressure settings and hose reels.

Best Gas Pressure Washer Under $400: FAQs

What is the Best Gas Pressure Washer Under $400?

The answer, unfortunately, depends on your pressure washing needs. Want a machine for house cleaning? The Generac 8874 might be a great option. Need something heavy-duty and reliable? You want to consider buying the SIMPSON Cleaning PS4240 PowerShot.

Which Company Pressure Washer is Best?

It’s tough to figure out a single best pressure washer brand, however, there are several great names you can trust. For instance, SIMPSON Cleaning pressure washers are worth telling upon.

What PSI Pressure Washer is Best for Driveways?

There are a few different PSI pressure washers that are good for driveways. For concrete surfaces like driveways, consider using a 3000 PSI pressure washer with a 4 GPM flow rate. Anything below that might not be so effective.

How Many PSI Do I Need to Celan Bricks?

There is no definitive answer to this question, as the amount of PSI required to clean bricks can vary depending on the type of bricks and the level of dirtiness. However, it’s a good idea to get a pressure washer with around 2000 PSI for the best results.

What PSI DO You Need to Clean a House?

There is no standard answer to this question since it can vary depending on the surfaces you’re trying to clean. For instance, for softwood, you don’t need a pressure washer of more than 600 PSI. Whereas, cleaning driveways require a higher PSI rating (around 3000 PSI).

Conclusion: Best Gas Pressure Washer Under $400

This was all about the best gas pressure washer under $400. We’ve talked about how you can pick the right one and which ones are the best in terms of features and cost-effectiveness.

I hope you’ve found this pressure washer guide helpful.