Cheap gas pressure washer

Pressure washers are one and the same as power washers or pressure cleaners and basically fall under two categories. Gas-pressure washers would obviously require fuel to run and normally have a manual pull-start. These are more often than not mobile machines that can take on large tasks like cleaning out your decks, driveway, sidewalk, and even your home’s siding. Then we have electric pressure washers which are commonly used to give furniture, grills, patios, or vehicles their original grandeur. Although electric units are less powerful than gas models, they’re also cheaper, quieter, lighter, and easily sparked to life with a mere flip of a switch.

When it comes to performance, you would want to look into the pressure washer’s PSI (pounds per square inch) and GPM (gallons per minute). It is safe to assume that the higher these ratings are, the better and faster it cleans. Cheap pressure washers can do just as great in spite of their lower rating. The key is to match the PSI and GPM to the project at hand. For instance, light-medium jobs would need 1,300-2,800 PSI at 1.2-1.4 GPM while heavy and extra-heavy-duty cleaning would call for a PSI range of 2,800 and higher at 3-4 GPM. Commercial-grade models which are used for graffiti removal, paint stripping, and washing a two-story home would typically start at 3,100 PSI.

Choosing between a cold or hot water pressure washer would again depend on your application. Cold-water units are ideal for do-it-yourself use since they are more compact, portable, and require less maintenance for breaking down dirt buildup. On the other hand, hot-water pressure washers are perfect for removing grease and oil stains but are generally more expensive and more complex to operate.

In terms of features, it would be convenient if the pressure washer comes with a set of attachments such as interchangeable and rotating nozzles as well as adjustable wands that would serve to boost its versatility. It is also worth considering getting one with an onboard detergent tank so you wouldn’t have to haul around a separate container. And to ensure safe operation, it is important that you understand the instruction manual and to wear something that can protect your ears and eyes.

Cheap gas pressure washer

I can’t think that many home users would be interested in a gas-powered pressure cleaner, I’ve always found an electric pressure washer to be quite sufficient for my general needs. Though I must say, there have been times when working on larger areas like cleaning the driveway or exterior walls of my house that I would have appreciated a more powerful machine.

A gas pressure washer is a better choice if you do a lot cleaning on larger areas. I would think that boat owners, truck fleet owners or paint contractors who regularly clean building exteriors will prefer the extra power. Or perhaps you’re one of those guys that gets a thrill out of using a machine that gives that something extra. Whatever your reasons may be for wanting a gas pressure washer, here are two of the best options on the market that won’t break the bank.

SIMPSON Cleaning MSH3125-S

SIMPSON MSH3125 S-3100 psi pressure washer
One of the best gas pressure washers for the money.
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  • 3100 PSI  2.5 GPM
  • HONDA GC190 engine
  • Maintenance-free OEM Technologies axial cam pump
  • MorFlex Hose 1/4″ x 25′ is non-marring, kink and abrasion resistant and is equipped wtih threaded M22 connection
  • Ergonomic spray gun designed for comfort and control
  • 5 Quick connect nozzle tips: 0°, 15°, 25°, 40° and Soap
  • Heavy-duty welded steel construction frame
  • 10″ Premium pneumatic tires

Documents for the Simpson MSH3125-S:

Overview | Simpson MSH3125-S

First impressions can say a lot. When you take a look at the Simpson MSH3125-S, you can immediately see that this machine is built to work hard. It has a solid heavy gauge metal tubing frame and very impressive 10” pneumatic wheels. Seeing a Honda engine always gives me a sense of security, for decades Honda have been manufacturing 2 and 4-stroke engines for every type of device from generators to chainsaws. There aren’t many manufacturers that can boast the level of dependability that this Japanese company has become famous for and spare parts are readily available around the world.

SIMPSON MSH3125 S-3100 psi pressure washer
Easy to access 5 pro-style quick connect nozzles for any cleaning task.
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So let’s start by taking a look at the heart of this machine, the engine. The Honda GC190 is a 4-stroke, 187cc engine with an overhead valve. It has improved combustion to provide maximum power whilst reducing fuel consumption. The axial cam pump uses maintenance-free OEM technology and POWER BOOST to provide optimum performance. The result; 3100 PSI with a water flow of 2.5 GSM. This is plenty for the DIY user and professionals alike.

The kink and abrasion resistant hose adds to the rugged dependability of the unit. The MoreFlex 25 Ft X ¼” hose is designed for heavy-duty use and uses standard M22 connectors. There are 5 nozzles that give you a variety of spray options — 0°, 15°, 25°, 40° and one for soap.

Pressure Washer Nozzle Chart | Simpson MSH3125-S

pressure washer nozzle chart.

For your safety, the spray gun has safety lock-out. At 74 LB it has a very reasonable weight for a powerful gas pressure washer, especially when you consider the impressively strong frame that holds the unit. It’s quite compact too – height: 24”; width: 20.5” and depth: 34”.

This is a very impressive commercial grade pressure washer that will certainly stand the test of time. The Simpson Cleaning MSH3125-S comes with a 2-year limited warranty for the engine; 1-year limited warranty for the pump and a 5-year limited warranty for the frame. This is certainly a worthy investment and offers great value for money.

Tech Specs (Simpson MSH3125-S):

  • PSI : 3100
  • GPM : 2.5
  • Engine: HONDA  GC190 engine
  • Pump : OEM Technologies  axial cam pump
  • Pump/Hose Connection|Threaded M22 connection
  • Hose : MorFlex Hose 1/4″ x 25′
  • Gun/Hose Connection : Threaded M22 connection
  • Wand : 16″ Steel with quick connect and threaded M22 connection
  • Nozzles : 0°, 15°, 25°, 40° and Soap
  • Frame :  Heavy-duty welded steel frame
  • Tires : 10″ Premium pneumatic

Generac 6923 | Best Gas Pressure Washer

3100 PSI, 2.4 GPM, Gas Powered Pressure Washer

Generac 6923 best gas pressure washer. Cheap gas power washer.
Lots of wonderful features like a comfortable grip and easy-pull spray trigger.
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  • 196cc GENERAC OHV engine / 3100 PSI, 2.4 GPM
  • Ergonomic Spray Gun – Cushion grip extends use. Easy-to-pull trigger reduces fatigue.
  • Quick-Change Nozzle Tips – Includes 4 tips: 0°, 25°, 40°, and soap applicator.
  • User-friendly Controls – Easy access to engine controls — on/off, choke, and fuel shutoff.
  • 25′ High Pressure Hose – Connects to the rear of the spray gun for maximum convenience.
  • Integrated Spray Gun Holder – Holds spray gun securely during transport and storage.
  • Convenient on-board ½ gallon detergent tank for hassle free cleaning
  • Over-sized Never Flat Tires : Take your pressure washer anywhere around your home, regardless of the terrain.
  • Axial cam pump with easy-access hose connections: Easily make hose connections without having to kneel on the ground
  • Generac OHV horizontal-shaft engine, the pump is well above the ground at the same level as the engine, which makes hose connections fast and easy.
  • 10” never-flat wheels. Easy to move over all types of terrain.
  • Quick change nozzle tips 4 included (0-degree, 25-degree, 40-degree, soap) for tackling any job

Documents for the Generac 6923 :

Overview | Generac 6923

The Generac 6923 costs a little less than the Simpson and makes for a very good deal, I would say that the Simpson looks to be more robust, though. The Generac has a steel tubing frame and 10” never-flat tires which all seem quite durable, even if it doesn’t present the same rugged construction of the Simpson.

The 196cc OHV Generac engine drives an axial cam pump, so the powertrain is very similar to the other gas model that we’ve looked at. Though, this one provides more than twice the pressure with an impressive 7440 PSI with a slightly lower flow rate at 2.4 GPM. Very few pressure washers offer this kind of pressure and it leaves me wondering what one needs all that pressure for. It certainly should be capable of removing any kind of dirt or debris from any type of surface and will be great at removing old flaking paint from buildings or vehicles. There are four nozzles for spray control — 0°, 25°, 40° and soap.

More Sturdy & Powerful than an Electric Power Washer | Generac 6923

Generac 6923 3,100 PSI, 2.4 GPM, best cheap Pressure Washer
Powerful, well-built, versatile and reliable. Great value.
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It comes with a 25 Ft high-pressure hose and has an onboard ½ gallon detergent tank. It weighs considerably less than the Simpson (57 LBS). This will make it easier for contractors who are continuously loading and off-loading the machine but the lower weight can well be a sacrificial loss to the less robust frame and general construction.

The Generac 6923 comes with a 2-year limited warranty with a number of limitations listed on the warranty agreement. One which I found particularly amusing is that the device is not covered by warranty for damage caused by rodent or insect infestations, so I guess you better check where you store it. It is a very good machine for it’s a price. Though for the extra cash, the Simpson may prove to be a better long-term investment as it does seem to be a good deal more robust and I would certainly go for the Honda engine over most others.


  • Power washer
  • Spray gun
  • Hose
  • 4 quick-change nozzle tips
  • First engine oil supply
  • Owner’s manual

One of the best cheap gas pressure washers — excellent build quality. Designed for heavy-duty cleaning jobs.

Generac also offers a variety of gas powered washers with similar features but like the Generac 7019 OneWash that includes a PowerDial Spray Gun.

Important Facts about Pressure Washers


You shouldn’t place too much emphasis on the size and weight of the machine. They all come with wheels and mostly you’ll be moving it from the garage or shed to the area where you’ll be using it. In most cases, there is little need to carry a pressure washer. If you will need to lift it frequently, the weight may be of some importance.


The pressure is measured in PSI or in countries that use the metric system, this will be indicated in bar (1 bar = 14.5 PSI). The higher the pressure, the more effective the cleaning power. Pressure can be adjusted with a control knob on some pressure washers. They also use different nozzles or a control on the lance to adjust the spray angle which changes the pressure. A wider spray angle will give less pressure and provide greater coverage, therefore, cleaning a larger area with less power.

One must be careful when using high pressure on painted surfaces. Some paint may become damaged or even be removed by very high pressure. I would recommend using a wider angle low-pressure setting for painted surfaces.

Flow Rate

The flow rate is expressed in gallons per minute (GPM) or liters per minute (LPM) and tells you how much water flows through the pump in a minute. A higher flow rate will allow you to work faster, covering a larger area.


Most pressure washers allow for the use of detergents. They either have a bottle that attaches to the spray gun and a valve will allow the detergent to flow into the water as you spray or a detergent tank that uses the pump to suck detergent into the water flowing to the spray gun. Detergent tanks are more common than bottles and are probably more convenient because you don’t have the bottle attached to the spray gun which adds bulk to the handle.

Detergent spray settings use a low pressure with a wide angle. The pressure washer will either have soap nozzle or models that use an adjustment on the lance will have a setting for soap. So always use the appropriate setting or nozzle for detergents.

You must pay attention to what type of detergent you use with your pressure washer. Harsh chemicals can damage the seals inside the pump and on the fittings. A high-pressure pump uses ceramic pistons with rubber O-rings to create compression very much like compression rings do in a car’s engine. If these seals are damaged by chemicals the pump won’t pressurize and it’s quite a job to repair them.

Many household detergents are fine and dishwashing liquid should not damage the seals. Most manufacturers sell their own detergent that they recommend for their equipment. These detergents may often cost more but they provide good cleaning power and are guaranteed not to damage the pressure washer. If you have any doubt, it would probably be better to use the manufacturer’s detergent. Harsh detergents can also damage painted surfaces.

Hoses and Fittings

High-pressure hoses and fittings are not the same as regular garden hoses and fittings. They are rated for higher pressure, usually up to 1000 bar (14500 PSI). Using the incorrect hoses or fittings can be dangerous. Hoses can burst and fittings can blow off causing damage.

Quick connect fittings are standard on virtually all modern pressure washers. They are very convenient and a good quality fitting shouldn’t leak too easily. Leaks are usually as result of a damaged or twisted O-ring inside the fitting. The O-rings are cheap and easy to replace. Most DIY guys shouldn’t have a problem replacing one. You can protect the O-ring and reduce the chance of leaks by regularly applying petroleum jelly to the O-ring. This is easily done using your finger.

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