Search  for anything...

Westinghouse WPX3400 Gas Pressure Washer, 3400 PSI and 2.6 Max GPM, Onboard Soap Tank, Spray Gun and Wand, 5 Nozzle Set, for Cars/Fences/Driveways/Homes/Patios/Furniture

  • Based on 5,351 reviews
Condition: New
Checking for the best price...
$349.00 Why this price?
Save $30.00 was $379.00

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Sep 20 – Sep 21
Order within 1 hour and 9 minutes
Available payment plans shown during checkout

Style: 3400 Max PSI


Features

  • 3400 PSI and 2.6 GPM of Powerful, Deep-Cleaning Water Pressure Perfect for Decks, Sidewalks, Siding, Fences, Railings, Garage Floors, Exterior Walls, Cars and Patio Furniture Easy to Fill 1 Gallon Gas Tank and Half Gallon Onboard Soap Tank
  • 25 Foot Abrasion Resistant Super-Flex Hose With Lightweight High Pressure Spray Gun and 5 Quick Connect Nozzles (0, 15, 25, 40 & Soap)
  • Compatible with Pressure Washer Accessories such as Surface Cleaners, Undercarriage Cleaners, and Foam Cannons with M22 fittings
  • Heavy Duty Gas Powered 212cc 4-Stroke Westinghouse OHV Horizontal Shaft Engine with Recoil Start - Long Lasting, Maintenance-Free Axial Cam Pump Provides 2.6 Gallons of Water (and Soap) a Minute
  • Tough Steel Frame Construction With 12 High Profile, Never-Flat Wheels Provide Easy Transportation and Maneuverability Includes Engine Oil, Tools, and Quick Start Guide to Get Started in Minutes
  • All Westinghouse Pressure Washers are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; Backed by 3-Year Limited Manufacturer Service, Labor, and Parts Coverage

Description

The Westinghouse WPX3400 Gas Powered Pressure Washer, with 3400 PSI and 2.6 GPM, is designed to tackle your toughest cleaning jobs with ease. Built with a powerful 4-cycle OHV Westinghouse Engine and a maintenance free axial cam pump, it’s meant for powerful heavy-duty cleaning. With 5 interchangeable nozzle tips and a built in 1.6 L soap tank, the WPX3400 has the versatility to handle a variety of situations and surfaces including brick, stone, concrete, wood, aluminum, and iron. The 3.3 L fuel tank and never-flat wheels offer easy mobility and maneuverability, allowing you to get into those hard-to-reach places with the toughest grime. Make all your deep-cleaning projects easier than ever before with the Westinghouse WPX3400 Pressure Washer.

Brand: Westinghouse


Power Source: Gas Powered


Color: Blue


Item Weight: 63 Pounds


Hose Length: 25 Feet


Product Dimensions: 21.7"L x 20.3"W x 23.4"H


Tank Volume: 0.5 Gallons


Maximum Flow Rate: 2.6 Gallons Per Minute


Global Trade Identification Number: 56


UPC:


Brand: Westinghouse


Power Source: Gas Powered


Color: Blue


Item Weight: 63 Pounds


Hose Length: 25 Feet


Product Dimensions: 21.7"L x 20.3"W x 23.4"H


Tank Volume: 0.5 Gallons


Maximum Flow Rate: 2.6 Gallons Per Minute


Global Trade Identification Number: 56


UPC: 850011336656


Item Weight: 63 pounds


Manufacturer: Westinghouse


Item model number: WPX3400


Frequently asked questions

The Westinghouse WPX3400 gas pressure washer has a fuel tank capacity of 1.6 liters. It is recommended to use unleaded gas for optimal performance.

Yes, the Westinghouse WPX3400 gas pressure washer is CARB compliant. This means that its emissions meet the standards set by the California Air Resources Board (CARB). It’s legal to use in all 50 states.

Yes, the Westinghouse WPX3400 comes with a spray gun, an extension wand, and a 5 nozzle set. It also includes an onboard soap tank for easy detergent application.

The Westinghouse WPX3400 is versatile and ideal for cleaning various surfaces. You can use it to clean cars, fences, driveways, homes, patios, and furniture. Its high-pressure output effectively removes dirt and grime from these surfaces.

Top Amazon Reviews

πŸš€ Abunda's Overview

This is our summary and key points to consider based on customer reviews.


The Westinghouse WPX3400 pressure washer has garnered positive reviews for its cleaning effectiveness and lightweight design. However, some users noted certain design flaws that can be a nuisance, and some early-life durability issues have been mentioned by users. With a varied experience spanning from easy use to tricky operation and service, the pressure washer offers a mix of advantages and drawbacks.

Pros

  • πŸ‘ Powerful Cleaning: Reviewers praised its cleaning effectiveness.
  • πŸ‘ Lightweight design: It's easy to move, making it convenient for users.

Cons

  • πŸ‘Ž Design Flaws: Issues like supply hose layout and oil drainage design have caused inconvenience to users.
  • πŸ‘Ž Durability: Some users indicated early-life durability issues like needing to replace the pull cord and handle. The wheels are also reported to be of low quality.

Should I Buy It?

If you are looking for a powerful pressure washer and can bear with some early-life issues and design flaws, this product is for you. However, if you're looking for a hassle-free, ultra-durable product, you may want to consider other options. Do remember that parts like hoses can be replaced by higher quality ones for better performance.


  • Excellent well built Pressure Washer- Easy assemble.
Style: 3400 Max PSI
I ordered on a Friday - Arrive Saturday and couldnt be happier. Easy assembly- great instructions. I couldnt wait to try it. First pull Pressure washer started and ran perfectly - and the noise from the unit wasnt too loud - the tone of the motor was tolerable - not annoying as some of the units I have purcahsed from others. excellent pressure - yet not hard to handle - the pressure washer is well balance- cleaned my pavered pront pirch beautifully. The price was excellent and the experience so far is awseome. If there is any room for improvement - would be the hose - it needs to be longer and more flexible. Easy fix though. Would recommend to anyone. Excellent unit. ... show more
Reviewed in the United States on August 25, 2025 by DL

  • Perfect Pressure Washer for Any Scenario - Great Value
Style: 3400 Max PSI
I bought this pressure washer after considering a plethora of different makes and models, including the option of electric vs. gas powered. I am glad I chose gas, and I'm glad I chose this Westinghouse WPX3400. I chose gas because it is much more powerful than electric, and I chose Westinghouse because they have a decent reputation, and the WPX3400 because that was the best "Max Pressure to Cost" ratio. I have used at least a half-dozen different pressure washers, mostly gas-powered, but never owned my own. Now that I have a property that I need to maintain myself, I believe it was WELL WORTH the price of this machine to be able to take on the significant number of tasks and projects that would require a Pressure Washer. The assembly was simple. Just a couple nuts and bolts to screw in (clearly labeled in the manual with pictures), and the top handle just slides on - no tools or bolts required. Great design. Starting Up: I thought that this Pressure Washer was a little flaky on the VERY FIRST USE. It took several pulls to start, and it stalled out on me. However, EVERY USE after the first, it has started up on the FIRST PULL! Seriously. If you buy this, expect your first startup to be a little rocky, but just let it do its thing - it'll either stall or you'll power it down... After the first use, expect every single use to start on the first pull, every time. That's how good I feel about this machine, after a small sample size of uses (~20 times). CAVEAT: If you are going to own and care for a Pressure Washer, you need to understand how to do things the right way. What I wrote above, about this machine starting up smooth every single time (from the second use on), will only be true if you care for the machine correctly. First, get yourself some 4-stroke engine oil as well as some "pump protector". Both of these items should be in the single-digit dollar amount. You will want these on hand because at some point you will need to: 1. Add more oil (or change the oil), and 2. Clean it thoroughly and protect the engine if storing it for any length of time. Second, read the manual in entirety, it's not long. If you're one of those people who throws away the manual without glancing at it and says "I got this", nobody thinks you're cool, and you might miss a potential quirk unique to a machine that will ruin your investment if you don't know about it. I won't summarize the manual here but I will touch upon two key things you need to be sure of before buying/using a gas powered machine like this WPX3400. - Be liberal with the "sample oil" included inside the box. I'd say use about 3/4 of the entire bottle, if not more. Use the dipstick to check the fill reading, and keep adding a few pours until it's at the right fill. - Connect your garden hose to the outdoor spigot and run the water for a few minutes before connecting it to the WPX3400. You want the hose full of water and not have any air pockets spurting out. Once the flowing end of the hose is pouring solidly, turn the spigot back off. - With the spigot turned off, connect the other end of the hose to the WPX3400. Go back and turn the spigot back on. With water now flowing directly to the machine, follow the startup procedure written in the manual, the basics being: Turn Power On; Turn Fuel Valve to On Position; Make sure engine is in "Choke" position; and give the ripcord a solid tug. If it doesn't start by the fourth or fifth pull, turn the water off and reassess. A few other helpful tips: - Once you get the machine running for the first time, don't worry about a stall or some slight oil burn. You want that first use to be continuous water spraying for several minutes. - On each successive Power Washing Session - you ALWAYS want to have the water spraying out of the nozzle at all times. If you need to let go of the nozzle trigger for any reason, try to get your finger back on that trigger as soon as you can. Ideally, you want to be continuously spraying water from the nozzle the entire time you are washing. Yes, this might seem like a waste of fresh water, but this is how you care for your investment. Instead of letting go of the trigger, move the nozzle away from your target and spray at the ground or into the air, and keep doing so until you are ready to spray your target area again. - If you know that you'll need to stop spraying for longer than 20-30 seconds, STOP what you are doing and TURN THE ENGINE OFF. - That might sound a little crazy, but this will preserve the engine life and performance. - Don't ever leave the engine running without spraying through a pressurized nozzle for more than 30 seconds. - If you need to stop your work for longer than that, turn off the engine; move the fuel switch to off and the engine switch back to "choke", then turn the water off at the Spigot. Disconnect the hose from the WPX3400, then pull the trigger on the nozzle to release any remaining pressure. - Do not attempt to change the spray nozzle until you have released all pressure. ... show more
Reviewed in the United States on June 3, 2024 by Vintage Troisi

  • The 5 star reviews are spot on - the WPX3400 is one excellent power washer!
Style: 3400 Max PSI
Just purchased the Westinghouse WPX3400 gas power washer after reading many Amazon reviews and other website reviews. Delivered about a month ago along with a few accessories including 16.5" surface cleaner, 50' pressure hose, short gun and foam cannon. All to complete my "Honey Do" list of cleaning the back concrete patio, pool area and veranda, front walk ways and cleaning the windows. My list included washing the F150, the farm truck and tractor along with tractor implements - bushwhacker, discer, box scraper and sprayers. It was a lot of pressure washing over the last month. Easy to assemble with well done instructions and illustrations - although you will need a few tools including metric wrenches and metric hex wrench to assemble (not included). Took me about 40 minutes to get it all unboxed and assembled, filling the oil reservoir and getting it gassed up and started on the second pull!. The WPX3400 is a super star pressure washer. Well made and constructed, intuitive/simple to use and powerful with the specific job's Westinghouse accessory. The Amazon reviews are accurate and worth reading along with the how to videos of this unit on YouTube. Highly recommended. The perfect pressure washer system for home use, farm use and DIY uses. ... show more
Reviewed in the United States on July 5, 2025 by Jim & Michelle

  • Powerful and Easy to Use, But Assembly Has Hiccups
Style: 3400 Max PSI
I'm really impressed with the power of this pressure washer! It was surprisingly easy to set up right out of the box. I bought some detergent to go with it, but honestly, I don't think I even needed it – this machine has plenty of muscle on its own. I spent over four hours washing my deck, and the detergent tank only needed one refill the entire time, which was fantastic and really kept me going without interruption. I'm looking forward to tackling my house siding and driveway next. The only reason I'm giving it 4 stars instead of 5 is due to a couple of minor assembly issues. The instructions suggested hand-tightening certain pieces, which unfortunately led to the nozzle holder's bottom part falling off during use. Also, I was missing an M-8 nut for one of the assembly pieces, which was a small but annoying delay. Despite these minor fumbles during assembly, the performance of this pressure washer is excellent. ... show more
Reviewed in the United States on June 8, 2025 by Morgan O.

  • Amazing Pressure Washer and Great Value
Style: 3400 Max PSI
Pleasantly surprised by this power washer. Made the switch to gas from electric and have been very pleased by the pressure, easy setup and start and just overall operation. Used it on my deck, patio furniture, siding, concrete and makes everything look new again.
Reviewed in the United States on August 14, 2025 by Donald W. Nixon

  • A wonderful product with a legacy of excellence and great performance.
Style: 3400 Max PSI
The pressure washer was easy to start; instructions were simple, multiple ways to register, and user friendly. The product had features that mirrored products with higher prices. It has large tanks for gas and soap which made cleaning my house and driveway a breeze.
Reviewed in the United States on August 30, 2025 by Eddie Gilbert

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...