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The Lawn Review: Home » This Dewalt 3400 PSI Pressure Washer Packs Serious Power

This Dewalt 3400 PSI Pressure Washer Packs Serious Power

The Dewalt 3400 PSI pressure washer packs quite the punch. For those of us completing residential jobs (driveways, windows, cars, etc.), the Dewalt 3400 PSI packs just the right amount of power.

Dewalt 3400 psi pressure washer review

Let’s check out all of the features of the pressure washer, then see if there are any negatives to watch out for. 

Bottom line: The Dewalt 3400 PSI is a super strong pressure washer that can be used at home or for commercial applications. It goes on sale occasionally at Home Depot.

Jump ahead:

The Dewalt 3400 PSI pressure washer: Features

Before you blow a fat stack on a pressure washer, you want to make sure that it can stand up to the job. There are a few things that need to undergo intense scrutiny, and I will review them below.

3400 PSI is a lot of power for a pressure washer

When it comes to buying a pressure washer, you need power. That’s where the term “pressure” comes from in “pressure washer” (did I just blow your mind?). You see pressure comes from the latin “presto”, which translates roughly to “Pretzel”. I sounded smart for a second there.

There’s a reason you aren’t buying a garden hose and sticking your thumb on it. You need power. And if you want to do anything above washing the tires on your car and the windows on your house, you need 3000 PSI or above. The Dewalt 3400 PSI obviously comes in above the 3000 mark, so you should be good for most jobs here.

greenworks 3000 psi pressure washer
Compare the 3400 PSI to 3000 on this electric one.

Now, if you are really wanting to remove some graffiti of vulgar things about your mom on the side of the arcade, you will probably want to get a pressure washer, put it in a box, put it in a truck, and move out of town because you have bigger problems.

But if you want to stick around, make sure to get a heavy duty pressure washer with at least 4000 PSI, or a really tight nozzle plus some free time with the Dewalt 3400 PSI pressure washer. 

Compare this power to some of the electric pressure washers, like the Sun Joe SPX3000 or the Greenworks 2000 PSI pressure washer.

Using this pressure washer is easy

Dewalt must have gotten some bad feedback at some point because they pulled out all the stops with this pressure washer. For starters (ha), the starter on this machine is electric. It does have a battery that needs to be charged, but can save you some back pain as a deviation from the old pull-string.

Another cool feature here is that they made this idiot proof. For those of us that are inclined to ignore routine maintenance, Dewalt made our lives a whole lot easier. The first feature they created is a low oil shutdown feature. If the engine oil gets low, then it will shut down until you replace or put in more. No more burning the engine.

Dewalt 3400 psi pressure washer
Looks sorta depressed in this picture 🙁

Another measure put into place is the water sensing device. This machine will not burn the motor up if water is not actively flowing into it. In fact, it will turn off if water is not detected inside the pump. 

A downside here is that the hose that comes with this machine is only 25 feet long. This is simply not long enough for jobs that require more than 30 minutes of work or cover a larger area.

my dewalt 3300 psi pressure washer in my garage
The little cousin – my Dewalt 3300 PSI pressure washer.

As a positive (and maybe negative, but we will get to that later), this machine comes with QuickConnect nozzles that allow for easy changing of the five different nozzles and even the sprayer arm. This makes it pretty easy to switch between certain nozzle heads and can save you time on the job.

Maintaining a gas powered pressure washer like the Dewalt 3400

As mentioned before, this will require new oil every now and then. The pressure washer comes with a big bag (no idea why it is in a bag) of oil for you to get started with, then the rest is on you. You will know when to change the oil because it will simply stop working (as mentioned previously).

Now let’s get down to durability. For most folks, this item seems to be totally fine. There are, however, a ton of negative reviews about the QuickConnect nozzles. It seems like there is a plastic connector from the metal nozzle to the spraying wand, which busts frequently. I have not personally experienced this, but a ton of other people have. Needless to say, this might not be the most durable item out there. 

An aside: it really is hilarious the adjectives used to describe some of these products. Looking at the product guide now, there is a nice little call-out for the tires on this. The tires are pneumatic (!!!!) – which basically means they have air in them. And they are ten inches and allow for easy maneuverability across various terrain. Yep, you can take these to go mudding and then climb the side of a mountain with them and then even take them to Antarctica. I think they have a dartboard of adjectives they use and this one landed on the “just describe it like a Jeep” portion. 


Price and value: Dewalt 3400 PSI pressure washer

The Dewalt 3400 PSI pressure washer will cost you about $500-550, otherwise known as a half a G – but I’ve seen it cheaper at Home Depot (check price here).

This thing is on the expensive side, but with great power comes great cost. In all reality, I would give this pressure washer a C. For CSatisfactory. It is a good pressure washer and does have a lot of power, but it seems 50/50 on whether or not it will break down on you. 

The official review: Dewalt 3400 PSI pressure washer

FeatureDewalt 3400 PSI pressure washerComparable gas powered pressure washer
Difficulty to useLess difficult to use (electric start)More difficult to start 
DurabilityNot very durableVery durable
MaintenanceSlightly easier to maintain Less easy to maintain
ValueMedium to low valueMedium value
Small jobsHighly recommendedHighly recommended
Medium jobsRecommendedHighly recommended
Heavy jobsNot recommendedLess recommended (need more PSI)

Why we review pressure washers

The reason we started this website in the first place was because we had so much trouble trying to find reasonable, understandable, honest reviews for lawn equipment. And it’s not cheap! After hours and hours of research, trying products and returning them, and messing up our yards – we started this site. 

review lawn tools
How we spend our time.

As people who had to learn the hard way, we want you to know exactly what you are signing up for before you purchase a piece of equipment. That’s why we are committed to providing honest, easy-to-understand reviews that mean something.

Things to consider before buying a pressure washer 

Some common considerations for those looking for a pressure washer include the following:

  • Ability to add soap to the hose instead of schlepping around a bucket with soap
  • Multiple nozzle types for whichever job you need
  • Length of pole (if cleaning exterior of house, not having one of these could limit how high you can reach)
  • Storage capability and maintenance requirements
  • PSI level for either commercial or residential use

What to look for in a pressure washer

When looking for a pressure washer, you want to have a good understanding of the jobs you want to get done. Most people use pressure washers to deep clean their patio, porch, driveways, windows, or other external surfaces around the house. Most pressure washers are good for these jobs as they are relatively light work and do not require excessive force.

For those of us cleaning the spray paint off of our cars from our crazy ex-girlfriends, you might want one that has a little more “umph” behind it. 

Luckily for you, the Dewalt 3400 PSI pressure washer can handle both.

About Dewalt

Dewalt is absolutely a household name in basically anything tool-related. Best known for their drills, they also have blowers, electric lawn mowers, chainsaws, and more. They are really trying to bring universal battery coverage to many of their tools. That’s why they have a huge line of 20V products. 

Dewalt leaf blower
Dewalt is known for a ton of different tools.

While known for their diversity of products, they aren’t necessarily known for being power or durability driven. That’s why you see commercial HVAC folks and contractors using Makita and Milwaukee tools mostly.

Alex K

Alex K

Alex is not a lawn care natural. He had to learn things the hard way. But after stumbling through his first few seasons of lawn care, he learned a lot. Mostly - what not to do. Alex has become one of the country's advocates of battery-powered lawn tools, quoted in the Washington Post among other highly visible publications. Alex started The Lawn Review with his friend Tyler - who you may see in some of the videos on this website - to help normal people like you understand how to take care of their lawn themselves with the best tools possible. Alex has thousands of hours of experience using hundreds of different lawn tools and has found exactly what to look for in each type of tool. He speaks with deep experience not only about the boring technical specifications, but what the tool actually feels like when you are using it, what to look for before you make a purchase, and how the lawn tool measures up when you factor in price.