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Powerhorse 115179 - 4400 PSI 4.2 GPM 420cc Gas Pressure Washer

The Powerhorse 115179 is a gas-powered pressure washer offering a maximum water pressure of 4400 PSI and flow of 4.2 GPM. (Read full specs)

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Features and Specifications

FuelGas-Powered
HandlingWheelbarrow
WaterCold (104°F max.)
PSI4400
GPM4.2
Cleaning Units18480
Engine420cc OHV 4-stroke
PumpTriplex
FrameSteel tubing
Soap injectionYes
Soap tankYes
Soap dilution15:1
Nozzles15°, 25°, 40°, Soap
Quick connect nozzlesYes
Onboard storageYes
Hose50 ft, ⌀3/8
Hose storageHooks
Dimensions
(L x W x H)
Approx. 38 x 24.8 x 30 in
Weight142 lbs
Pressure controlValve
Wheels2 wheels, ⌀12", pneumatic
Included accessoriesWand, spray gun, high pressure hose, 4 nozzles
SecurityLow oil, trigger lock and thermal relief valve
EmissionsEPA
Warranty2 years

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.

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Description

Zoom on the Powerhorse 115179

The Powerhorse 115179 is a heavy duty, commercial pressure washer, that provides its users with an all-around versatile cleaning experience, and enables:

  • overall cleaning of hard surfaces, washing vehicles, and prepping surfaces for painting
  • gentle cleaning for sensitive surfaces, and wide coverage cleaning with low pressure
  • applying detergent and cleaning solutions, and rinsing surfaces

Its power characteristics and design, its main features and all its additional features are presented ahead.

Power

Utilizing a powerful 420cc engine, this machine's triplex pump can deliver a pressure of 4400 PSI (around 73 times stronger than a standard garden hose) and a flow rate of up to 4.2 GPM (values claimed by the manufacturer). Thus, the Powerhorse 115179 achieves a cleaning power of 18480 Cleaning Units.

For this gas-powered pressure washer, the engine is started using a time-tested pull-start mechanism.

Gasoline is stored in a fuel tank with a maximum capacity of 1.72 gallon.

Design & Handling

With its wheelbarrow design, the Powerhorse 115179 delivers superior maneuverability and stability, facilitating easy transport and steady performance across various surfaces. The durable steel tubing frame of the assembly ensures its longevity, providing stability and shielding internal components from damage, even in tough conditions. The reversible handle offers further versatility, as its different positions make the unit less bulky when stored.

With its hefty 142 lbs, this unit isn't exactly easy to handle, making manual lifting and transport quite a daunting task, especially on uneven terrain. Its 420cc engine, the triplex pump and steel tubing frame are mainly responsible for its heavy weight. However, the incorporation of two 12" pneumatic wheels makes navigating the 115179 less cumbersome, even on uneven terrain.

Main Features

Along with the Powerhorse 115179 itself, the package also includes a spray gun, a wand, a pressure hose, 4 nozzles and a detergent injection feature, which are discussed in further detail below.

  • Soap injection: The pressure washer features a dedicated tank for detergent storage. Featuring an automatic soap dilution mechanism, the Powerhorse 115179 ensures detergent is mixed to the specified ratio of 15:1 for optimal cleaning results. When a soap nozzle is connected, the pressure washer takes the initiative to mix the detergent with the water flow automatically.
  • Pressure hose: The included 50 ft ⌀3/8" high-pressure hose can be neatly stored on the unit when not in use, utilizing a set of convenient hooks for convenient organization.
  • Spray gun and wand: Both the classic ergonomic spray gun and its wand may be conveniently stored in a side hook.
  • Nozzles: Review the table below to learn about the 4 included nozzles and the surfaces they're recommended for.

15°

25°

40°

Soap
Concrete, brick, masonrySuitableSuitableSuitableSuitable
Siding, gutters, houseUse with cautionUse with cautionSuitableSuitable
Fencing, deck, patioUse with cautionUse with cautionSuitableSuitable
Lawn equipment, boat, RVUse with cautionUse with cautionUse with cautionSuitable

Important note: The shapes of the depicted nozzles serve for illustration purposes only and may vary. Symbols used include a red cross for 'Not recommended,' a green check for 'Suitable,' and an orange check for 'Use with caution.'

Other Features

The specs of the Powerhorse 115179

The Powerhorse 115179

  • Onboard storage: The Powerhorse 115179 allows you to be always fully prepared, as it features a handy storage area, where nozzles and accessories can be stored.
  • Safety: Safety of operation is enhanced by a thermal relief valve (which helps to prevent internal pump damage), a low oil protection and a trigger lock mechanism (which prevents accidental operation).
  • Accessories: On top of an owner's manual (opens in a new tab) and the usual documentation to get you swiftly started, the Powerhorse 115179 also comes with spray gun, wand and pressure hose.

The Powerhorse 115179's performance versus other pressure washers

The following charts are provided to give you an idea of how the key specs of the Powerhorse 115179 compare to similarly priced pressure washers.

  • The Powerhorse 115179, with a max water pressure of 4400 PSI, has one of the highest pressure outputs of the gas-powered products in the $875-1000 price range.
  • With a maximum GPM of 4.2 (gallons per minute), this washer belongs to the best in terms of water flow, in its respective price range.
  • Boasting with 18480 Cleaning Units (PSI X GPM), the 115179 is one of the most efficient devices in its respective price range.

Price comparison

As you can see from these interactive charts, when compared to other gas-powered washers between 18000 and 18500 Cleaning Units, the Powerhorse 115179 is on the cheap side of the price range.

It can therefore be a really good buy if you're looking to acquire a budget pressure washer.

The bottom line

STRENGTHS:
  • Inexpensive
  • Triplex pump
  • Designed to be stable
  • Good range of nozzles included
  • Automatic detergent dilution
  • Onboard storage
  • Several security features
  • High PSI for the price
  • High GPM for the price
  • High CU for the price
WEAKNESSES:
  • The Powerhorse 115179 doesn't have any notably low specs.

Do you own the Powerhorse 115179 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

About Powerhorse

The Powerhorse outdoor power products brand offers a range of gas- and electric-powered tools including pressure washers, log splitters, wood chippers/shredders, and electric generators. Also available are engines and water pumps. With a motto of "Power You Can Depend On", Powerhorse is a trademarked brand name that is distributed exclusively by the Northern Tool & Equipment Company Inc.

Warranty Information

The Powerhorse 115179 is covered under a warranty for up to 2 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Powerhorse pressure washers, please contact the Powerhorse Customer Support: 1-866-443-2576.

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