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Husqvarna HH42 - 4200 PSI 4 GPM Gas Pressure Washer With Honda Engine

The Husqvarna HH42 is a gas-powered pressure washer offering a maximum water pressure of 4200 PSI and flow of 4 GPM. (Read full specs)

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Features and Specifications

FuelGas-Powered
HandlingWheelbarrow
WaterCold
PSI4200
GPM4
Cleaning Units16800
Engine389cc Honda GX390 OHV 4-stroke
PumpAnnovi Reverberi Triplex
Other model numbers967979501, PW4200
FrameWelded steel
Soap injectionVia siphon hose
Nozzles0°, 15°, 25°, 40°, Soap
Quick connect nozzlesYes
Onboard storageYes
Hose50 ft
Hose storageHooks
Dimensions
(D x W x H)
Unknown
Weight145 lbs
Pressure controlValve
Wheels2 wheels, ⌀13", pneumatic
Included accessoriesWand, spray gun, high pressure hose, soap hose, 5 nozzles
SecurityLow oil, trigger lock and thermal relief valve
EmissionsCARB, EPA
Warranty2 years
UPC011675207571

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

Honda® GX390 engine delivers 389ccs of cleaning power. Adjustable AR triplex pump allows user to adjust pressure between 300-4200 PSI. 4.0 Max GPM per PWMA PW101-2010. Fully welded durable frame. 50’ flexible hose for fewer kinks, easier storage and extended reach.

Zoom on the Husqvarna HH42

In summary, the Husqvarna HH42 is a heavy duty, commercial pressure washer, that offers an all-around versatile cleaning experience, and also:

  • targeted spot cleaning for hard, unpainted surfaces, reaching elevated areas, and thoroughly removing stubborn stains
  • complete cleaning of hard surfaces, vehicle washing, and surface prep for painting
  • gentle cleaning for sensitive surfaces, and wide coverage cleaning with low pressure
  • applying detergent and cleaning solutions, and rinsing surfaces

The following sections will present you in detail its power characteristics and design, its main features and all the additional features it has to offer.

Power

Its triplex pump, which utilizes a powerful 389cc engine, may deliver a pressure of up to 4200 PSI (almost 70 times more than a standard garden hose) and a flow of up to 4 GPM. Corresponding to these values is a cleaning power of 16800 Cleaning Units.

For this gas-powered pressure washer, the Honda GX390 engine is started using a time-tested pull-start mechanism.

Fuel for the pressure washer is housed in a tank capable of holding up to 1.6 gallon of gasoline.

Design & Handling

The Husqvarna HH42's wheelbarrow-style design enhances both mobility and stability, enabling seamless navigation and consistent performance, even on rugged terrain. The sturdy welded steel frame ensures the longevity of the assembly, offering stability and protection for internal components, even during rigorous use. The handle adds to the HH42 convenience of transport.

With its hefty 145 lbs, this unit isn't exactly easy to handle, making manual lifting and transport quite a daunting task, especially on uneven terrain. Its 389cc Honda GX390 engine, the triplex pump and welded steel frame are mainly responsible for its heavy weight. Nevertheless, with its two 13" pneumatic wheels, users can manage the HH42 with less difficulty, even over uneven terrain.

Main Features

The Husqvarna HH42'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: Even without a built-in soap tank, the device relies on a siphon hose to provide detergent. The detergent is automatically mixed with the water flow by the pressure washer when a soap nozzle is connected.
  • Pressure hose: With a set of convenient hooks, the unit offers a practical solution for maintaining workspace order, allowing the included 50 ft high-pressure hose to be neatly stored when idle.
  • Spray gun and wand: Both the classic ergonomic spray gun and its wand may be conveniently stored in a side hook.
  • Nozzles: In the table below, you can see the 5 included nozzles alongside their respective recommended surface uses.


15°

25°

40°

Soap
Concrete, brick, masonryUse with cautionSuitableSuitableSuitableSuitable
Siding, gutters, houseNot recommendedUse with cautionUse with cautionSuitableSuitable
Fencing, deck, patioNot recommendedUse with cautionUse with cautionSuitableSuitable
Lawn equipment, boat, RVNot recommendedUse with cautionUse with cautionUse with cautionSuitable

Important: The nozzle shapes shown above are for illustrative purposes and may vary. Symbols denote suitability, with a red cross indicating 'Not recommended,' a green check for 'Suitable,' and an orange check for 'Use with caution.'

Other Features

  • Onboard storage: Stay prepared for any job with Husqvarna HH42'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 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 Husqvarna HH42 also comes with wand, pressure hose, spray gun and soap hose.

The Husqvarna HH42's performance versus other pressure washers

The following charts are provided to give you an idea of how the key specs of the Husqvarna HH42 compare to similarly priced pressure washers.

  • Equipped to deliver up to 4200 PSI, the Husqvarna HH42 is recognized as one of the gas-powered models delivering higher-than-average water pressure, priced between $1250 and $1500. If your priority is the highest possible power of the water stream, in this price range, we suggest checking out the Lifan LFQ4515E-CA, which reaches up to 4500 PSI.
  • With a maximum GPM of 4 (gallons per minute), this washer belongs to the best in terms of water flow, in its respective price range.
  • Reaching up to 16800 Cleaning Units (PSI X GPM), the HH42 is one of the more efficient amongst its similarly priced peers. 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-CA and its 18000 Cleaning Units.

Price comparison

As you can see from these interactive charts, when compared to other gas-powered washers between 16500 and 17000 Cleaning Units, the Husqvarna HH42 is on the average side of the price range.

Therefore, this pressure washer nicely fits in the expected budget for this kind of cleaning power.

The bottom line

STRENGTHS:
  • In the expected price range
  • Triplex pump
  • Honda engine
  • Designed to be stable
  • Good range of nozzles included
  • Onboard storage
  • Several security features
  • High PSI for the price
  • High GPM for the price
  • High CU for the price
WEAKNESSES:
  • No soap tank

Do you own the Husqvarna HH42 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Warranty Information

The Husqvarna HH42 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 Husqvarna pressure washers, please consult Husqvarna's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-800-487-5951.

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