Simpson vs Generac Pressure Washer – Expert Comparison 2023

Simpson vs Generac Pressure Washer – Both are Good Dirt Smashers!!

Simpson Vs Generac Pressure Washer

Simpson Or Generac – Which one to choose?

When it comes to pressure washers, there are two main types: gas-powered and electric-powered machines. Gas-powered pressure washers are typically more powerful and can be used for more heavy-duty cleaning jobs. Electric pressure washers are lightweight and easy to use, making them a good option for light-duty cleaning jobs.

Out of gas pressure washers, there are two main rivals. Simpson and Generac pressure washers. Both brands offer a variety of models with different features, making it difficult for you to decide which one is the better investment.

But which type of pressure washer is better? Is Simpson pressure washer cost-effective or does Generac take the lead? Which brand has more powerful machines? Therefore in this article, we’ll pit Generac vs Simpson pressure washer engines in a head-to-head battle to see which one comes out on top.

We’ll take a close look at the key features of each brand and see how they compare in terms of quality, power, and value. By the end, you’ll know which brand is right for you and your pressure washing needs.

So which one will it be? Simpson or Generac?

Let’s find out in the below Simpson vs Generac Pressure Washer battle of power and efficiency!!

Simpson vs Generac Pressure Washer

Simpson and Generac are two of the leading brands in the pressure washer industry. Both brands offer a wide range of models to choose from, making it easy to find the perfect pressure washer for your needs.

However, when choosing between Simpson or Generac, people often stick to which brand is the better choice.

Here, we’ll take a closer look at both power washer brands to help you decide which machine is suitable for you. We’ll compare the two brands across a range of factors, including price, performance, durability, and more.

By the end of this article, you’ll know everything you need to make an informed decision about which brand to choose.

Generac Pressure washers

Generac Pressure Washer

Generac was founded in 1959 by Robert Kern, who was an engineer with the General Electric Company. He, however, later sold his business to the GE company and left the company.

In the 1980s Generac began to sell products outside of the United States. It instantly became one of the most popular brands of generators in the world. The company produces portable generators for the residential and commercial markets.

Generac is also one of the leading manufacturers of pressure washers. They offer a wide range of products for residential and industrial applications. The Generac Pressure Washer is a powerful machine best to clean floors, driveways, sidewalks, roofs, driveways, decks, and more.

Whether you are looking for a pressure washer for commercial or residential use, you’ll find something under this umbrella to suit your needs and budget. Generac’s unique pressure washer technology delivers powerful performance in a compact package.

Let’s discuss one of the top products of this brand briefly.

1. Generac 7122 Speed-Wash Pressure Washer

The Generac 7122 SW is equipped with an OHV 196cc engine. This OHV engine delivers power on another level with its high fuel efficiency. This helps the machine to easily pump water at a flow rate of 2.7GPM and 3200psi pressure.Generac 7122 Speed Wash The feature mostly liked by its users is the maintenance-free pump mechanism of the pressure washer. It has an axial Cam pump with a Brass head that is best than an aluminum pump.

Generac 7122 Speed Wash pressure washer is a full package of equipment with fantastic features. It has turbo nozzles that can remove dirt 30% more quickly than most of the other gas-pressure washers. The turbo nozzle is best for cleaning hard-to-clean surfaces than any other nozzle.

It comes with an amazing accessory. Generac power broom. With its high-quality nozzle, the Generac power broom increases the cleaning performance of the machine 4 times.

To compete against dark and brutal stains and to enhance the cleaning levels of the device it has a soap blaster nozzle. This nozzle sprays the soap to help you clean it more thoroughly.

With the most flexible,non-marring, and kink-resistant 25 feet long hose this pressure washer is best for driveways and sideways.

You can easily adjust the pressure through a power dial on the spray gun. The PowerDial system allows the operator to adjust the pressure output from low to high with one touch of a button.

A separate detergent tank comes with this pressure washer. Also, the big plastic wheels of this washer help you move it from place to place easily.

  • Easy to assemble
  • Lots of attachments
  • Compact designing
  • Separate detergent tank
  • User friendly
  • Durable and lightweight
  • 8640 cleaning units.
  • Plastic wheels

2. Generac 8874 2900 PSI 2.4 GPM Gas-Powered Residential Pressure Washer


This Generac pressure washer is my old love.

Last year, I had been procrastinating pressure washing my garage for months. The walls and floors were covered in dirt, grime, and oil stains that made the space look dingy and uninviting.

Finally, I decided it was time to take action and bought this Generac 2900 psi gas-powered pressure washer.

Upon receiving the package, I was impressed by the size and weight of the unit. It was compact enough to fit in my medium sized-garage easily.

But at the same time sturdy and heavy enough to feel like a high-quality piece of machinery.

This 8874 Generac pressure washer is 50 pounds and measures 24.4″L x 18.9″W x 35.5″H, making it the perfect size for my needs.

Easy to Assemble

One thing about Generac I admired the most is its easy assembly. It is always straightforward.

Plus the clear instructions made the process easy to follow. I was surprised at how quickly I was able to get the machine up and running.

Before I knew it, I was standing in front of my garage with the powerful Generac engine at my disposal.

Ease of Use

The cushion grip and easy-to-pull trigger were a welcome feature, especially as I knew that pressure washing my garage would be a long and tiring task.

The grip made the pressure gun comfortable to hold for a long period. At the same time, its trigger was effortless to pull, reducing fatigue and improving comfort.

One of the best things about the Generac pressure washer was the quick-change nozzle tips. The 0°, 25°, 40°, and soap options gave me the flexibility I needed to tackle different parts of my garage.

I started with the 40° tip to cover large areas quickly, then switched to the 25° and 0° tips to focus on stubborn stains.

The soap tip was also a great addition, making it easy to apply soap to the surfaces before pressure washing.

Its 25-foot high-pressure hose is connected to the rear of the spray gun for maximum convenience. I appreciated it as it allowed me to move freely around the garage without feeling tethered to the machine.

Efficient and Result-Oriented Cleaning

Want to know the cleaning results? Oh, they were impressive!

The maximum pressure of 2900 pounds per square inch and flow rate of 2.4 gallons per minute was enough for my garage. The machine blasted away dirt and grime with ease, leaving my garage looking brand new.

After this pleasant experience, I used it on many occasions. After hours of pressure washing, I was relieved that the Generac pressure washer held the spray gun securely during transport and storage.

I could easily move the machine back to its storage spot without worrying about the spray gun falling or getting damaged.

Overall, I was incredibly pleased with this 2900 PSI Generac gas-powered pressure washer. The powerful 196cc OHV engine, comfortable grip, and quick-change nozzle tips made pressure washing an easy and efficient task.

Why should you buy it?

The Generac engine had no trouble starting quickly when cold but occasionally required more than one pull when too cold.

Moreover, in terms of noise level, I found that the pressure washer engine was not significantly louder than a typical lawn mower engine. Therefore, it is a good bargain for residential users.

Simpson Pressure washers


Jack Simpson has always been a man of great inspiration, he had a dream to start his own business and that’s what he did. He started The Simpson Company in 1961. It was the first company that manufactured medium-duty and heavy-duty pressure washers.

The Simpson Company has been in business for over 100 years and is the largest manufacturer of cleaning equipment in the world. Their newest venture is to develop and manufacture their line of cleaning machines.

Simpson pressure washers are unique, and they’re proud to say that they’ve never been powered by any kind of mechanical tools. Simpson Manufacturing Company has been manufacturing more than 30 different models of cleaners.

Top quality Simpson’s pressure washers are specifically designed to meet the need for every level of washing. It offers a variety of pressure washers for multiple purposes. The Simpson pressure washer with different models is the first choice of most users. It comes with several accessories like nozzle attachments, soap blaster, hose, etc.

Simpson cleaning MSH3125 Pressure washer

Simpson MSH3125 Gas Pressure Washer

Simpson Cleaning Megashot MSH3125 is the best-seller gas pressure washer on Amazon. It is famous for its powerful engine and sturdy built quality. Simpson MSH3125 comes with a HONDA GC190 Premium engine with a low oil shutdown feature to protect the engine.

With this powerful engine, the pressure washer pumps water at the rate of 2.5GPM and 3200psi of pressure. This Simpson gas pressure washer is good for cleaning furniture, outdoor areas, house siding, sidewalks, fences, and garage doors too.

In contrast to the Generac pressure washer, it has a maintenance-free OEM technology axial camp pump to last longer. Its OEM Technologies E-Series crankcase is constructed of high-strength die-cast aluminum that has been anodized for long-lasting protection and corrosion resistance.

Also Read: Simpson vs Craftsman Pressure Washer – Comparison Guide 2023

The sturdily built quality of this pressure washer due to its welded steel frame is enough to provide maximum support not only to the body but to the engine and pump also.

Simpson has premium 10-inch pneumatic wheels that allow easy mobility on any terrain. Moreover, it is equipped with a 25-foot high-pressure, flexible, and non-marring Morflex hose with an M22 threaded connector.

It also has 5 different nozzle attachments, including a spray gun and extension. Therefore, it becomes a user choice for commercial as well as residential use.

However, there is a little downside to this power washing machine. Its operation is quite noisier than its competitors of the same capacity. Therefore, always choose a location where you can’t disturb your neighbors.

Simpson Cleaning MSH3125

  • Lightweight to carry around
  • Easy to assemble
  • Durable built quality
  • 10-inch pneumatic wheels to move
  • 5 nozzle attachments
  • Cleaning power is 8000 cleaning units
  • Little bit noisier
  • Vibrates on un-even surfaces

Also Read: Simpson Pressure Washer Won’t Start

Generac Vs Simpson Pressure Washer – A Complete Comparison

As you know both companies have been producing power machines for decades, so they have mastered the industry. They’ve developed a range of reliable residential, portable, commercial, and industrial pressure washers.

As we have discussed prominent pressure washers from both brands, now we will compare both regarding their differences. We have made a comparison of Generac Vs Simpson Pressure Washers based on the following characteristics and features:

Engine quality: Simpson Vs Generac Pressure Washers

When buying a gas pressure washer, one of the most important factors to consider is engine quality. After all, the engine is what powers the pressure washer and determines how well it will perform.

Simpson is a well-known brand in the pressure washer industry, and their pressure washers are known for being powerful and durable. After doing some research, we’ve found that Simpson pressure washers have a higher quality engine than Generac pressure washers. Their powerful engines are built to last.

The reason we found out is Simpson pressure washers use Honda engines in their most of the machines. As we all know, pressure washers with Honda engines are more reliable, efficient, and durable. They also produce low noise and emissions as compared to other engines.

Moreover, Simpson also uses the world-famous Kohler engine for its powerful machines. They also have their own Simpson engines in many of their pressure washers.

On the other hand, Generac pressure washers only use Generac engines. They are, however, easy to maintain. But overall, there is no comparison between Honda and Kohler engines with Generac engines.

So, when it comes to engine quality, both Simpson and Generac pressure washers are great choices but Simpson takes the clear lead here.

DeWalt Vs Simpson Pressure Washer – A Comparison Guide 2023

Which has better build quality Generac or Simpson?

Both brands offer a wide range of pressure washers, from lightweight models to heavy-duty commercial-grade machines. So, which brand makes the best long-lasting pressure washers?

When it comes to built quality, Simpson and Generac pressure washers are both very well made.

They both use high-quality materials and components, and they are both designed to withstand heavy use. However, Simpson pressure washers do have a few advantages over Generac power washers.

For one, Simpson pressure washers are built with a thicker and more durable frame and structure. This makes them less likely to tip over or vibrate during use.

Additionally, Simpson pressure washers have a longer warranty than Generac models. Therefore, Simpson has a reputation for offering high-quality pressure washers that are built to last.

Which pressure washer gives the best performance Simpson or Generac?

It all starts with the engine. Simpson’s gas-powered pressure washers feature Honda GX, Kohler, or Simpson OHV engines. These are some of the most reliable and durable engines on the market, and they can provide more power and better performance than most other brands.

But it’s not just the engine that makes Simpson pressure washers so great as Generac. They also feature high-quality OEM technology axial cam pumps, which are designed to withstand years of use.

Additionally, Simpson pressure washers come with a variety of nozzles and accessories that allow you to customize the results you get.

Generac falls behind Simpson in this race too. The engine performance of the Generac OHV engine doesn’t match with Kholer and Honda engines. Besides lacking the desired power it also produces more noise. Pump quality is also not better than that of its rival.

So if you’re looking for the best performance and reliability, then Simpson is the brand for you.

Is Simpson More Portable Or Generac?

While both pressure washers are great for their portability, the Simpson is once again the better choice. It’s lighter and comes with big pneumatic wheels, so it’s easier to move around o any terrain.

The Generac is a bit heavier and has never-flat wheels, so it can be a bit more difficult to move around. However, the Generac and Simpson both have long hoses, so they can reach further areas easily.

Overall, the Simpson is the better choice for a more portable pressure washer.

Which Brand Is More Expensive Simpson Or Generac?

When it comes to price, Simpson pressure washers are generally more expensive than Generac pressure washers. However, Simpson pressure washers often come with more features and higher-quality components than Generac machines.

All in all, both pressure washers are good to go for cleaning purposes. There’s a slight difference in the price of both products. But both are worth buying and unique in their features.

If you have a change of mind and want to buy an electric pressure washer then visit our this for a comparison of Active VE52 and Karcher K1700 pressure washers.

Generac vs Simpson Pressure Washer – FAQs:

Is Simpson a good pressure washer?

Absolutely yes!! The Simpson pressure washer is strong and durable compared to any other pressure washer available on the market. It is best for commercial use as well as residential areas too.

Is Simpson a good pressure washer made in the USA?

Yes, Simpson is a good pressure washer made in the USA. Simpson pressure washers are built with high-quality components, and they are some of the most durable pressure washers on the market. Simpson pressure washers are also available in a variety of sizes and styles to suit your needs. Whether you need a compact pressure washer for small jobs or a heavy-duty pressure washer for industrial use, Simpson has a pressure washer that will get the job done.

What kind of engine does a Simpson pressure washer have?

The top-selling Simpson pressure washers are powered by a HONDA or Kohler engine. Simpson also uses its own manufactured engines which are also famous for easy and quick maintenance.

Is Generac a good brand for a pressure washer?

Yes, Generac is a good option. Generac is a leading manufacturer of pressure washers, and their products are known for being durable and versatile. Whether you need a pressure washer for your home or business, Generac is a great option to consider. Their pressure washers are available in a variety of sizes and styles, so you can find the perfect match for your needs. Plus, with a Generac pressure washer, you can rest assured that you're getting a high-quality product that will last for years to come.

Who makes the most reliable pressure washer?

Simpson makes the most reliable pressure washers. The great built quality, excellent engine performance, durability, and justifiable price make this brand the best choice across the USA.

How long does the Generac pressure washer last?

The Generac pressure washer is the most durable with a gasoline power source that can last approx 10years. But it can be used for a long time with proper care.

What is the best high-pressure washer to buy?

Simpson is the best high-pressure washer to buy. Whether you need a pressure washer for your home use or a commercial purpose Simpson has a machine for you. Powered with a Honda or a Kohler engine, it provides you with the desired high pressure according to your needs.


In the world of pressure washers, there are two names that always seem to come up: Simpson and Generac. Both brands have a long history of quality and performance, so it can be tough to choose between them.

So, which one is the best? Who wins the Simpson Vs Generac Pressure Washer battle? The answer may surprise you.

In our opinion, both brands are excellent and it really comes down to personal preference. However, if we had to choose one, we would go with Simpson. Their pressure washers have a reputation for being durable and powerful, and they always seem to get the job done right.

Related Articles:

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Flinn Milan

Flinn Milan is the content director at Washwith. He is responsible for developing helpful content in collaboration with other hard-working team members. Over several years, his content strategy is mainly focused on describing and highlighting every product with its positive and negative points

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