Gas PW Icon Our ratings and reviews of the Best Gas Powered Pressure Washers of 2020

updated: April 28, 2020
Man washing the patio with the gas pressure washer.

If you need heavy-duty cleaning power for exterior surfaces, nothing beats a top-rated gas pressure washer. From cars and oil-stained driveways to mildewed decks, patios and walkways, you’ll be amazed at how quickly you can make them look like new with the right power washer.

Alex Woodward - Power Washers Expert
For most light to medium duty jobs, an electric power washer works just fine. But for heavy-duty dirt and grime or for cleaning farm equipment, etc. where you have no access to a power outlet, a gas pressure washer will become your best friend.
Pressure Washer Expert

Our gas pressure washer reviews and buying guide will help you find the right machine for your specific cleaning needs. We’ll look at several important tests, including price comparisons, engines, cleaning power, accessories, ease of use, length of hoses and what jobs each machine is best suited for.

Here are the pros and cons of a gas pressure washer:



  • No power cord to limit reach, no power outlet needed
  • Great for cleaning large areas quickly
  • Best for removing very tough stains
  • Versatile for a wide variety of applications
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  • Heavier
  • Louder
  • More expensive (~$300 – $500 for residential models)
  • Can’t use indoors due to exhaust
  • Requires winterizing – must drain all water and add antifreeze
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When looking for the right model for you, pay attention to these criteria:

Gas Power Washers Buying Checklist

  1. Price
  2. PSI / GPM / CU (cleaning power)
  3. Warranty
  4. Weight
  5. Extra nozzles (on board storage is a big plus)
  6. Plastic or metal wand
  7. Wheels – larger and pneumatic wheels provide the best stability and maneuverability
  8. Plastic or brass couplings for hose attachment
  9. Hose length – minimum 20-foot hose is best
  10. Hose storage
  11. Engine type and power
  12. Noise output

We’ve listed several top-rated gas pressure washers from brands such as Champion®, Ford®, WEN®, Simpson®, and Generac®. Browse the listings and compare to find the machine that’s right for you.


Best Gas Pressure Washers – Our 2020 Ratings & Reviews

1Better for Experienced Users
Commercial quality cleaning power for gentle to heavy-duty cleaning

This is a hefty machine at 84 pounds, but comes with a lot of power – 3300 PSI at 2.5 GPM. It’s powered with a Honda GX200 OHV commercial series engine and comes with a 25-foot MorFlex hose, 5 nozzles (0, 15, 25, 40 degrees & soap), and 10-inch pneumatic tires.

There’s a 3-year limited commercial warranty for the engine, a 5-year limited warranty for the pump, 90-day limited accessory warranty, and the frame has a 10-year limited warranty. CU Score: 8,250.

ProsThe Good

The AAA industrial triplex plunger pump is equipped with PowerBoost technology for higher pressure at the nozzle for better performance. The 16-inch steel ergonomic spray wand has a trigger lock to keep it off while you’re not cleaning. The low profile makes it easy to store.

Four-ply rubber pneumatic tires help it roll across rough terrain and help to absorb vibration when the unit’s running. Along with changing the tips, pressure can be controlled with throttle adjustments so you can clean delicate items like lawn chairs. This pressure washer is CARB-compliant for emissions.

ConsThe Not-So-Good

This model isn’t cheap, so if you have a tight budget, watch for a sale. It’s also loud, so make sure you wear hearing protection. The machine can be hard to move around (handle is set too low), so if you’re using it in a commercial setting, you may want to look for an easier-to-maneuver model.

Vibration can make the machine “walk” across the ground and shake the nozzles from their holders. Hoses can drag on the ground while rolling. Starting it may be more difficult after a month or so of use.

Customer OpinionWhat Customers Say

Customers are impressed with this machine’s power. They’ve have had success cleaning concrete, brick, gutters, cars, decks, vinyl siding, 2nd story surfaces, patio furniture, sheds, and bluestone. They like how lightweight the machine is and the low profile for storage.

While the warranties offered are longer than many other models, Simpson can be difficult to deal with if trying to get an exchange or refund or to replace parts. Most complaints revolved around quality control issues with packaging/shipping (parts missing, dented, cracked, etc). Also, several customers wished the handle wasn’t so low so they could roll it around easier.

Take a Look At These Alternative Models:
  • SIMPSON Cleaning MSH3125
    SIMPSON Cleaning MSH3125
    Price: Average

    The MSH3125 is very similar in design to the PS3228, but is cheaper. It’s designed more for home use with a Honda GC190 premium residential engine and OEM Technologies axial cam pump that produces 3200 PSI at 2.5GPM.

    It has the same 10” pneumatic tires, 5 nozzles, 16” spray wand, and 25’ hose. The hose is smaller in diameter – 1/4” rather than 5/16”. This machine is about 30 pounds lighter at 55 pounds, is slightly smaller, and has a shorter warranty (2-year engine, 1-year pump, 5-year frame). CU Score: 8,000.

More Info

2Easiest to Setup & Start
A true champion for heavy-duty cleaning in a compact machine

This 68 lb. workhorse comes with a 224 cc Champion engine which produces 2.4 GPM and up to 3200 PSI. The 25-foot hose offers plenty of reach. This unit features a comfort-grip cleaning wand and an Annovi Reverberi axial cam pump for a consistent cleaning, time after time.

It comes with 5 quick connect nozzles (0, 15, 25, 40 degrees & soap) and 2 detergent tanks. Onboard storage keeps the hose, wand and nozzles in one spot for convenient access. CU Score: 7,680.

ProsThe Good

A durable steel frame makes this machine super sturdy. The single-cylinder engine holds 0.9 gallons of fuel and includes a low-oil shutoff sensor. It holds 0.6 quarts of oil (10W-30). With two ½ gallon detergent tanks, a 4-foot detergent hose, and 5 nozzles, this machine is built for a wide array of jobs. Never-go-flat 12-inch wheels make it easy to maneuver.

Champion offers a 2 year limited warranty and FREE lifetime tech support for this model.

ConsThe Not-So-Good

There’s a small red switch that turns the engine “on” but it’s not very obvious. Also, there’s a heat shield over the exhaust that can get very hot. The little warning symbol engraved in it is hard to see, so be careful not to touch that area while working.

When you tip the machine as you’re rolling it, sometimes it can shut off. The instruction manual is also not very clear with how to set up the hose, etc.

Customer OpinionWhat Customers Say

Most customers say this machine isn’t any louder than a push mower, but ear protection is still a good idea. Many say it ran for a lot longer than they expected. People have had good results cleaning concrete driveways, cars, vinyl siding, decks with mold stains, picket fences and were even able to remove gum from concrete.

Most issues seem to be quality control related, with a few units arriving damaged or breaking after a few uses.

More Info

3Most Accessories Included
Plenty of power and accessories in a lightweight package

This 62-pound lightweight from Generac rolls on 10-inch never-go-flat wheels and cleans with 3200 PSI at 2.7 GPM. It’s powered with a Generac 196cc OHV engine. It includes a 30-foot flex hose and 4 quick-change nozzles (0, 25, 40 degrees & soap) plus additional attachments including a turbo nozzle, soap blaster, and power broom. The ergonomic cleaning wand has a pressure adjustment dial with 4 settings.

Generac offers a 3 year limited warranty for the whole machine. CU Score: 8,640.

ProsThe Good

What do you need to clean? Choose from power dial settings on the spray gun for car, wood, concrete, and soap to adjust to the pressure you need. The power broom attachment makes quick work out of cleaning decks and other large surfaces, while the turbo nozzle removes grime 30% faster than standard nozzles.

A large fuel tank keeps this model running for hours. It’s lightweight enough to move easily, while the inverted trigger on the handle prevents hand fatigue.

ConsThe Not-So-Good

The plastic parts can feel flimsy. Detergent suction hose is too close to the engine and may get too hot. Vibration can be an issue, as can loose wheels and nuts. Be sure to check and tighten any loose nuts before using this model.

The owner’s manual is unclear as to how much oil to put in the engine. Plus, the oil drain plug is pretty hard to reach, so be careful not to overfill.

Customer OpinionWhat Customers Say

Customers love the included attachments and the adjustment dial on the wand for customizing their cleaning jobs. They were able to blast away grime on foundations, brick walls, siding, gutters, cars, sidewalks, decks, boats, boardwalks, and more.

Generac has responsive customer service if you have any issues. However, they often recommend taking the unit to an authorized service center that may not be local and may have long wait times. Customers have reported that some repair shops no longer honor Generac warranties.

Take a Look At These Alternative Models:
  • Generac OneWash 7019
    Generac OneWash 7019
    Price: Average

    The Generac 7019 OneWash is structurally the same as the SpeedWash, but is a little less powerful at 3,100 PSI and 2.4 GPM. It has the same engine and ergonomic spray gun with 4 pressure adjustments.

    The hose is shorter at 25 feet, and is a standard high-pressure hose. 4 quick-connect tips are included, but there are no additional cleaning attachments. It’s somewhat lighter at 57 pounds. CU Score: 7,440.

More Info

4Gas Pressure Washer
A budget-friendly pressure washer with generous cleaning power

This model weighs in at 67 pounds with 3100 PSI at 2.5 GPM. It’s powered by a 208cc OHV air-cooled 4-stroke engine and an axial cam pump. The 30-foot hose and 42-inch spray wand offer plenty of room for reaching out of the way spots. It comes with 5 quick-change nozzles , 12” never-flat wheels, and a 32 oz. on-board detergent tank.

WEN offers a 2 year warranty on this machine. CU Score: 7,750.

ProsThe Good

First of all, this is a good pressure washer for a good price. Five soap nozzles are included with this model (0, 15, 25, 40 degree & soap). The instruction manual is easy to follow and the initial setup is simple. It runs quieter than many other gas power washers and is CARB compliant.

WEN customer service seems to be more responsive and helpful than other companies. They respond quickly and offer to send replacement parts for just about anything.

ConsThe Not-So-Good

The wheels may be a bit loose, which will cause shaking when you roll it. Proper oil use is very important in this unit. Use only the oil recommended in the manual and change it according to directions. If you don’t, the O-rings might not seal properly.

It also has a manual choke, not automatic. So you must set the choke before you start the engine, which may be confusing to novice power washer users. Also the gas cap may be hard to remove and might break if you force it off.

Customer OpinionWhat Customers Say

Customers were impressed with the big wheels and that they could maneuver over terrain so well. They’ve used it successfully to clean long fences (up to 200 ft), decks (including Trex), driveways, pavers, vinyl siding, chairs and more.

There are some quality control issues with this model. Some customers reported oil and water leaks, as well as too much engine vibration. Others reported damaged parts upon unboxing.

More Info

5Best Upgrade From Electric
Simple to use from light cleaning to removing years of grime

The Duromax XP3100PWT is a hardworking machine that produces 3100 PSI at 2.5 GPM. Its DuroMax 7 HP, 208cc engine runs a 3-piston axial cam brass head pump. It comes with 6 quick-connect nozzles (0, 15, 25, 40, soap & rotary/turbo) and a built-in detergent tank.

The hose is 25 feet, and the unit weighs 77 pounds. It comes with a 1-year manufacturer’s warranty. CU Score: 7,750.

ProsThe Good

Assembly is easy right out of the box. A 16 oz. bottle of oil is included. The 12” oversized never-flat wheels easily clear rough terrain for use on the farm and other uneven surfaces. Nozzle storage is up near the handle and really easy to access.

The 0.3 gallon (1.13 L) built-in detergent reservoir holds plenty of your favorite cleaning solution. Operation is straightforward and simple. This machine is EPA and CARB compliant.

ConsThe Not-So-Good

The hose and wand retainers have a rather weak plastic attachment and could break. The tires may come off the wheels on occasion. Be sure to keep the manual handy for any troubleshooting tips, as the unit can be a little finicky with fluids, etc.

This unit and most Duromax washers require attention to maintenance a little more than other machines. For instance, the air filter needs to be cleaned after every 50 hours of use. Oil and gas levels require monitoring. Just a bit too low, and it will not start.

Customer OpinionWhat Customers Say

For most customers, this unit started up with only one or two pulls. It cleaned a wide variety of surfaces well, both with and without soap, even years of built-up grime. As for noise, most agree it’s not any noisier than a lawnmower.

At least two customers replaced the plastic attachments for the wand and hose retainers with metal rivets to make them sturdier. A few customers had units with dented gas tanks upon arrival.

More Info

6Customizable Cleaning Power
A compact yet powerful unit with wide range of pressure

This affordable and compact washer from Stanley produces 3,100 PSI at 2.4 GPM via a 196cc Stanley overhead cam engine and an OEM Technologies vertical axial cam pump. It weighs 72 pounds, with a welded, powder-coated steel frame, and 12” never-flat wheels. 5 nozzles are included (0, 15, 40, soap & turbo) along with a 25-foot MorFlex braided hose.

Stanley offers a 2-year limited warranty for the engine, 1-year for the pump, and 5-year for the frame. CU Score: 7,440.

ProsThe Good

The EasyStart overhead cam engine is designed to help any user start the washer easily. An adjustable pressure regulator on the spray gun, along with the 5 included nozzles, gives you a wide range of customized cleaning.

The flexible hose stays flexible even with a high pressure water flow. Though this is a relatively small unit, the weight (72 pounds) keeps it steady.

ConsThe Not-So-Good

While the washer comes with engine oil, it’s only about half of what the engine requires, so make sure you have some on hand to fill up the oil tank. Hoses can fall against the muffler and be damaged, so you’ll have to be sure to keep them out of the way.

The handle doesn’t fold down for compact storage under workbenches or to fit in car trunks. You can remove it, but will need tools, and it can be an annoying task.

Customer OpinionWhat Customers Say

Most customers say this unit is super easy to start, usually within one to two pulls. It had enough power to clean pretty much any exterior surfaces around their homes. They appreciated the adjustable pressure and flexible hose.

Most complaints involved damage to parts or missing parts upon unboxing the unit. Stanley has been responsive to those situations for most customers, although a few customers felt like they got the runaround with customer service.

More Info

Alex Woodward - Power Washers Expert
Yes, gas-powered pressure washers are more expensive than electric. But for power, durability, and heavy-duty usage, they can’t be beat. Prices are better nowadays than they used to be, however. You can get a strong residential gas power washer for the price of a medium-duty electric washer easily.
Pressure Washer Expert

You’ll notice that gas pressure washers are also a lot heavier than electric. But that’s due to the added weight of the engines, which weigh at least 25 pounds on most models. They’re also bigger so they can support the engine and gas tank.

Buy only what you need

When looking at all the numbers in the specs, keep these in mind:

  • PSI – pressure per square inch (how strong the spray is)
  • GPM – gallons per minute (how much water is used)
  • CU – cleaning power units = PSI x GPM. For example 3200 PSI x 2.5 GPM = 8000 CU

Super powerful pressure washer
The bigger the CU score, the more powerful the machine. But you don’t always need the most powerful machine. Yes, the Tim Allen types are all grunting right about now, but it’s true.

Look for the machine that will get the job done most efficiently for whatever surfaces you have to clean. They all have different features that will help you in one way or another. For instance:

  • If you’re tall – look for washers with fold-down handles that will extend far enough so you don’t have to bend over every time you move the machine. Folding handles also make for easy storage.
  • If you have back trouble – look for a lightweight machine. Remember that adding gas, water, and oil will increase the listed weight.
  • If you have many kinds of surfaces to clean – look for machines with several different nozzles, adjustable pressure, and attachments included.

A note about warranties

You should pay attention to warranty rules.

Most gas pressure washers will come with a 2-year limited warranty. This is usually just for the engine. Other parts like the pump and accessories can have widely-varying warranties, from 1 year to just 90 days.

And the “limited” part means they guarantee the machine is “free from manufacturer’s defects in material and workmanship.” This basically leaves it in the hands of the service rep to decide whether the defect is the manufacturer’s fault or yours.

Some companies are surprisingly generous in handling these issues. WEN is one of those. Other manufacturers like Simpson, for instance, can be hit or miss. Always contact the retailer first if you have any issues. They’ll often accept returns a lot quicker.

Helpful tips and tricks to keep your Pressure Washer going strong

Gas Powered Pressure Washer Cleaning Tips

When we researched customer experiences, we gathered up a lot of useful real-world tips for troubleshooting problems that may arise with your pressure washer. You’re investing a good chunk of change on this machine. So take care of it, and it will take care of you. We’re listing some good troubleshooting tips below for your reference.

You may already know everything but read the manual, seriously.
  1. READ THE MANUAL – This should go without saying, but then those Tim Allen types… seriously, just read through the manual over your morning coffee and highlight important info so you know what’s what.
  2. Oil leaking during shipping – This seemed to be a common problem with several machines. Oil can leak and soak into air filters which will choke out the engine if you try to start it. Check your air filter upon arrival. If it’s soaked with oil, wash the filter with Purple Power. Let it dry, then replace and see if it will start.
  3. Fittings & other connections loose – Check all these before start up. Tighten anything that’s loose but do NOT overtighten or you could crack the housing or strip the bolts.
  4. Prime the pump – Air trapped in hoses can damage the pump. Let the water run through it for at least 30 seconds (even a couple minutes) before you start spraying. If you have longer hoses, it can take longer to get primed.
  5. Everyone could change the oil in the engine of the gas pressure washer.
  6. Post-op care – When you’re finished (especially after long jobs), don’t just turn off the machine and stick it in the garage. Take some time to do a little maintenance. Take the pump hose off and inject some pump saver to protect the inner workings of the pump. You just attach it on the inlet side and spray the can until it comes out the high-pressure hose side. It will prolong the life of your pump big time.
  7. Change that oil – After every 10 to 20 hours of use (more frequently for new machines), change both the engine and pump oil. New machines can have loose metal shavings that will come off in the oil, and you don’t want too many accumulating and running through the engine.
  8. Use the right oil – Normal 30W oil sold for automobiles can be bad for pressure washers. You need small, air-cooled engine oil, so make sure you’re using the right thing and not just grabbing whatever you put in your truck. Always use the oil recommended in the manual.
  9. Man washing building with extension wand.
  10. Think about extensions – Wand extenders and longer (~50’) hoses are great for reaching those upper stories and gutters. They keep you off ladders and keep you from having to move the machine around so often. If you’re tall, a wand extension can really save your back when working on ground level surfaces.
  11. Do you have big hands? – Sometimes it can be hard to fit your hands in to detach the hoses from the machine with everything in tight quarters. Try putting on a quick disconnect adapter so it’s easier to detach.
  12. Don’t over tighten anything – We said this in #3, but just don’t. If you overtighten the inlet hose to the washer, for instance, you’ll probably have leaks. Remember, stronger isn’t always better!
  13. Finesse the choke – Many machines have manual chokes that need a little finessing before you use the pull-start. After you pull once or twice, move the choke lever a little bit, then pull again. Repeat if necessary.
  14. Man uses the gas pressure washer for cleaning.
  15. Be mindful of hoses when moving the washer – If they’re long and tend to get in the way, hold both inlet and high-pressure hoses near the washer handle when you’re moving the machine. This will prevent running over hoses or getting them tangled.
  16. Make sure your nozzles are securely attached – Many people have popped a nozzle onto their wand, pulled the spray trigger, and wheeeeee – the nozzle flew across the yard, never to be seen again. This is a real challenge if you lose a green tip in your green grass. So be sure the nozzles are firmly on before you start spraying.

Winterize that baby


For those of you who have cold winters, you must winterize your gas pressure washer before storing it so you’ll be able to start it again come spring. To do this, follow your owner’s manual instructions. Basically, you’ll be filling the pump and internal tubing system with RV-type antifreeze. If storing for over a month, drain the gas from the fuel tank as well.

Here’s a handy video to show you how: How to winterize a pressure washer.

Alex Woodward
Alex owns a home improvement and restoration company in Vancouver. He obtained his Bachelor’s degree in Construction Management from Saskatchewan Polytechnic and is a NARI Certified Remodeler. His team does a wide range of home restoration products, both interior and exterior.
image description Comments
May 14, 2020 at 12:42 pm

Hi. I had a Devilbliss pressure washer, 5hp gas 2200 psi. I loaned it to a friend who said it got stolen. This pressure washer was so easy for me to start on the first pull. I loved it. Now I have to replace it and would like something comparable. I like that it had a Honda engine and 5 hose tips. I am struggling after a couple months of research. Can you give me some advice??

Kevin (Cleanup.Expert Team)
May 18, 2020 at 8:25 am

Hello Bobbi, sorry you’ve had trouble finding the right replacement. If you’re looking for something that is basically just an upgrade on what you had, try the Simpson Cleaning PS3228. This incredible device has offers a Honda engine and 2200 psi, along with 6.5hp. It also offers 2.5gpm and five quick change nozzles. While a bit pricy, you won’t ever be disappointed in the performance from a quality machine like the Simpson PS3228.

Brian Acosta
February 11, 2020 at 8:19 pm

We live near Phoenix, where the temperatures rarely get close to freezing. Is it really necessary to winterize our pressure washer?

Kevin (Cleanup.Expert Team)
February 13, 2020 at 8:48 am

We live near Phoenix, where the temperatures rarely get close to freezing. Is it really necessary to winterize our pressure washer? (POSTED)

Answer: Since you’re in a warm climate, you don’t have to worry about freeze damage. However, if you’re not going to be using the pressure washer for several weeks, you should still go through the steps to “winterize” it, just to protect all the seals, hoses, and inner workings from dry rot, mildew, and deterioration.

It’s really not difficult, even for gas pressure washers, and can save you money so you don’t have to buy replacement parts or replace an entire unit every year. Check out our handy guide here:

September 19, 2019 at 2:55 am

We’ve avoided pressure washers for years, but hiring out is so dang expensive now and our siding is just awful. Ever since I googled “pressure washer injuries,” – not for the faint of heart – I’m scared I might do something wrong and cause damage. Is pressure washing my home myself too dangerous?

James (Cleanup.Expert Team)
September 19, 2019 at 8:22 am

We just googled that – you’re right. *shudder* Injuries from pressure washers are no joke. They can do serious damage, even to the point of severing fingers and toes. And they can also damage surfaces.

But, just like any other lawn and garden machine (hello, lawnmower), when used carefully as directed in the owner’s manual and with the proper safety precautions, you’re no more likely to hurt yourself with a power washer than you are a lawnmower.

We’ve written a detailed user guide with lots of safety info. There are lots of videos on YouTube to show you proper operation techniques as well. Biggest things to remember – closed toe shoes, goggles, long pants, NO ladders, and never, ever aim the spray at any person or pet. Do your research, find a quality machine, and use it safely! Good luck!

Brian Moore
September 17, 2019 at 8:43 am

We live just north of New Orleans, where winters rarely get below the mid-40s in temp. Do I still need to winterize my gas power washer? I keep it in the attached garage where it never gets that cold.

James (Cleanup.Expert Team)
September 17, 2019 at 1:44 pm

Well, the answer is probably yes. Winterizing a pressure washer isn’t just for winter. If you’re not going to use it for 30 days or more, leaving it sit with any water and detergent in the lines can rust the inner workings, build up mildew, and damage seals.

Also, even in New Orleans, you could experience a freak cold spell or ice storm in winter. That could mean your home might lose power, and suddenly that warm garage isn’t so warm anymore. So to protect from possible freezing conditions, we definitely recommend that you winterize your power washer.

Fear not, though. It’s not as hard as you think. It’s a few minutes, tops. Watch this video to see how it’s done.

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