The Generac XC4000W #8872 is a gas-powered pressure washer offering a maximum water pressure of 4000 PSI and flow of 3.5 GPM. (Read full specs)
Zoom on the Generac XC4000W
In summary, the Generac XC4000W is a heavy duty, commercial pressure washer, that offers an all-around versatile cleaning experience, and also:
- spot cleaning of hard, unpainted surfaces and high-reach cleaning
- intense cleaning of tough, paintless surfaces
- cleaning of painted and fragile surfaces
- application of detergent and cleaning solutions
Powered by a powerful 389 cc engine, its aluminum triplex pump can deliver a pressure of 4000 PSI (around 67 times more than a standard garden hose) and a flow of up to 3.5 GPM (values claimed by the manufacturer). Combined, these values mean that the Generac XC4000W has a cleaning power of 14000 Cleaning Units.
A classic pull-start mechanism is responsible for starting the gas-powered pressure washer’s Honda GX390 engine.
Gasoline storage is facilitated by a steel fuel tank with a maximum capacity of 1.52 gallon.
Design & Handling
The wheelbarrow design of the Generac XC4000W grants mobility and stability to the unit. The robust and sturdy welded steel frame offers longevity to the assembly. The folding handle enhances its mobility, while allowing for a convenient storage.
This model weighs 150 lbs. For this reason, it cannot be called lightweight and thus, carrying and transporting it might be somewhat challenging. The main contributor to its weight are its 389 cc Honda GX390 engine, the triplex pump and welded steel frame. However, its three 10" never-flat wheels play an important part in its maneuvrability, as they allow for a smooth manipulation on the job.
The Generac XC4000W's package includes a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, with a more detailed description below.
- Soap injection: The XC4000W does not feature a traditional soap tank. Instead, the detergent is supplied by a siphon hose. For this purpose, it has an integrated 5 gallon bucket holder that can hold cleaning detergent or serve as an additional onboard storage for tools and accessories. This bucket holder can be folded to save storage space. The detergent is automatically added to the water when a soap nozzle is connected.
- Pressure hose: The unit comes with an easy-to-connect 35 ft ⌀3/8" high-pressure hose (4200 PSI rating). However, it doesn't feature any proper storage solution for it (no reel, strap or hook).
- Spray gun and wand: A side hook allows for an easy storage of the included classic ergonomic spray gun and its stainless steel wand. A rotating auxiliary side handle further improves both left-handed and right-handed users' comfort.
- Nozzles: The 5 included nozzles, and the respective surfaces they’re appropriate for, are listed in the table below.
|Concrete, brick, masonry||Use with caution||Suitable||Suitable||Suitable||Suitable|
|Siding, gutters, house||Not recommended||Use with caution||Use with caution||Suitable||Suitable|
|Fencing, deck, patio||Not recommended||Use with caution||Use with caution||Suitable||Suitable|
|Lawn equipment, boat, RV||Not recommended||Use with caution||Use with caution||Use with caution||Suitable|
Note: The shape of the nozzles above is for illustration purposes only and may differ.
Red cross: Not recommended. Green check: Suitable. Orange check: Use with caution.
- Onboard storage: The Generac XC4000W's handy storage area lets you store nozzles and accessories, and thus, you’ll be always prepared and have everything necessary for the job at hand.
- Safety: Safety of operation is enhanced by a thermal relief valve (which helps to prevent internal pump damage), a trigger lock mechanism (which prevents accidental operation) and a low oil protection.
- Accessories: Besides the usual owner's manual and documentation to get you promptly started, the Generac XC4000W comes with spray gun, wand, pressure hose and soap hose.
- Emissions: The Generac XC4000W is EPA-approved and CARB-compliant. Thus, selling and purchasing this pressure washer is allowed in each of the 50 states, including California.
The Generac XC4000W's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the Generac XC4000W compare to similarly priced pressure washers.
- The Generac XC4000W, which can reach up to 4000 PSI, has one of the higher pressure outputs of the gas-powered units that cost between $1350 and $1700. In case you are looking for a device with the highest possible power of its water stream, one of the top achievers in this price range is the Lifan LFQ4515E-Elite with a PSI of 4500.
- This washer, with a GPM of 3.5 (gallons per minute) has a somewhat lower water flow value compared to devices in its price range. If rinsing away debris most efficiently is your priority, one of the devices with the highest GPM in this price range is the NorthStar 157160, which can reach up to 5 GPM.
- With 14000 Cleaning Units (PSI x GPM), the XC4000W is on the low end when compared to other similarly priced gas-powered devices. When it comes to the highest overall cleaning power in the current price range, one of the products at the very top currently is the Lifan LFQ4515E-Elite and its 18000 Cleaning Units.
As you can see from this interactive chart, when compared to other gas-powered washers between 14000 and 14500 Cleaning Units, the Generac XC4000W is on the expensive side of the price range.
While certainly not the cheapest of its cleaning power range, purchasing it could most likely also mean enjoying the reliability of a high-end product.
Features and Specifications
|Water||Cold (100°F max.)|
|Engine||389 cc Honda GX390 OHV 4-stroke|
|Other model numbers||8872|
|Soap injection||Via siphon hose|
|Nozzles||0°, 15°, 25°, 40°, Soap|
|Quick connect nozzles||Yes|
|Hose||35 ft, ⌀3/8|
(L x W x H)
|Approx. 51.5 x 23.3 x 32.5 in|
|Wheels||3 wheels, ⌀10", never flat|
|Included accessories||Stainless steel wand, spray gun, high pressure hose, soap hose, 5 nozzles|
|Security||Low oil, trigger lock and thermal relief valve|
Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.
Founded in a garage in Wales, Wisconsin by Robert Kern and five employees, Generac has been a leader in power generation systems since 1959. In the early 1960s, Generac began producing electric generators for Sears and Roebuck Company. During the 1970s the company began to manufacture other outdoor power equipment such as electric chainsaws, pressure washers, and welders. Generac, now a subsidiary of CCMP Capital, continues to be headquartered in Waukesha, with manufacturing facilities in four other cities in Wisconsin USA.
The Generac XC4000W is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Generac pressure washers, please consult Generac's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-888-GENERAC (888-436-3722).