The NorthStar 157122 is a gas-powered pressure washer offering a maximum water pressure of 3100 PSI and flow of 2.5 GPM. (Read full specs)
Zoom on the NorthStar 157122
In summary, the NorthStar 157122 is a heavy duty, commercial pressure washer, that offers an all-around versatile cleaning experience, and also:
- intense cleaning of hard, unpainted surfaces
- cleaning of painted and frail surfaces
- applying detergent and cleaning solutions
The NorthStar 157122's triplex pump, powered by a 163 cc (4.8 hp) engine, can provide a pressure of up to 3100 PSI (approximately 52 times more than a standard garden hose) and a flow of up to 2.5 GPM (values claimed by the manufacturer). The NorthStar 157122 thus has a cleaning power of 7750 Cleaning Units.
A classic pull-start mechanism is responsible for starting the gas-powered pressure washer’s Honda GX160 engine.
Gasoline storage is facilitated by a steel fuel tank with a maximum capacity of 0.83 gallon.
Design & Handling
The wheelbarrow design of the NorthStar 157122 grants mobility and stability to the unit. The strong steel tubing frame assures assembly longevity. The handle adds to the 157122 convenience of transport.
At 95 lbs, we can't really say that the unit is a lightweight, and manually lifting or transporting it could be a challenge. The major reasons for its heavy weight are its 163 cc Honda GX160 engine, the triplex pump and steel tubing frame. However, its two 10" never-flat wheels play an important part in its maneuvrability, as they allow for a smooth manipulation on the job.
The NorthStar 157122's package includes a spray gun, a wand, a pressure hose, 4 nozzles and a detergent injection feature, with a more detailed description below.
- Soap injection: While the device doesn't feature a soap tank, detergent supply is ensured by a siphon hose. The NorthStar 157122 features an automatic soap dilution mechanism, that will dilute your detergent with a 15:1 ratio. The detergent will be added automatically to the water when a soap nozzle is attached.
- Pressure hose: The 50 ft high-pressure hose, which is included with the device, can be stored neatly on the unit itself when idle, using a set of convenient hooks.
- Spray gun and wand: A side hook enables you to easily store the included classic ergonomic spray gun and its wand.
- Nozzles: The 4 included nozzles, and the respective surfaces they’re appropriate for, are listed in the table below.
|Concrete, brick, masonry||Suitable||Suitable||Suitable||Suitable|
|Siding, gutters, house||Use with caution||Use with caution||Suitable||Suitable|
|Fencing, deck, patio||Use with caution||Use with caution||Suitable||Suitable|
|Lawn equipment, boat, RV||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: Stay prepared for any job with NorthStar 157122's handy storage area, which allows you to neatly store any nozzles and accessories which you may need for the job.
- 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: The NorthStar 157122 comes with an owner's manual (opens in a new tab) and some basic documentation to get you quickly started. On top of that, you also get pressure hose, spray gun, soap hose and wand.
- Emissions: The NorthStar 157122 is EPA-approved and CARB-compliant. This means that this pressure washer can be bought and sold in each of the 50 states, including California.
The NorthStar 157122's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the NorthStar 157122 compare to similarly priced pressure washers.
- The NorthStar 157122, a device which can produce up to 3100 PSI, is on the lower end of the pressure spectrum, among the gas-powered pressure washers in the $675-825 price range. If you're going after the highest possible power of the water stream, one of the best in this price range is the Simpson PS60843 that can reach up to 4400 PSI.
- This washer, with a GPM of 2.5 (gallons per minute) has a somewhat lower water flow value compared to devices in its price range. If being able to rinse away debris as efficiently as possible is your priority, one of the products with the highest GPM in this price range is the Simpson PS60843, with 4 GPM.
- With 7750 Cleaning Units (PSI x GPM), the 157122 is on the low end when compared to other similarly priced gas-powered devices. If you consider the highest overall cleaning power as a really important factor, the Simpson PS60843 and its 17600 Cleaning Units has one of the highest cleaning efficiency of all the similarly priced units.
As you can see from this interactive chart, when compared to other gas-powered washers between 7500 and 8000 Cleaning Units, the NorthStar 157122 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 (140°F max.)|
|Engine||163 cc 4.8 HP Honda GX160 OHV 4-stroke|
|Pump||Comet DWD Triplex|
|Soap injection||Via siphon hose|
|Nozzles||15°, 25°, 40°, Soap|
|Quick connect nozzles||Yes|
(L x W x H)
|Approx. 40.3 x 26 x 23.8 in|
|Wheels||2 wheels, ⌀10", never flat|
|Included accessories||Wand, spray gun, high pressure hose, soap hose, 4 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.
The NorthStar brand of outdoor power equipment is owned and distributed by the Northern Tool company, which was founded in 1981 in Minnesota, USA. The brand includes log splitters, generators, pressure washers, and air compressors. Though many of the components are manufactured in Northern Tool’s factory in China, NorthStar pressure washers are engineered, assembled, and tested in America, and powered by Honda engines. They include hot water, cold water, and soft-wash systems, along with many accessories. NorthStar brand products make up a large percentage of Northern Tool's product line.
The NorthStar 157122 is covered under a warranty for up to 10 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of NorthStar pressure washers, please contact the NorthStar Customer Support: 1-800-270-0810.