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Westinghouse Universal 16.5” Pressure Washer vs Westinghouse WPX3400 Gas Pressure Washer, 3400 PSI

Updated July 2026 — Westinghouse Universal 16.5” Pressure Washer wins on sales rank and psi, Westinghouse WPX3400 Gas Pressure Washer, 3400 PSI wins on warranty and weight.

The Westinghouse WPX3400 Gas Pressure Washer is a more powerful and versatile option, while the Surface Cleaner Attachment is a cost-effective solution for existing pressure washer owners.

Why Westinghouse Universal 16.5” Pressure Washer is better

Price

Surface Cleaner Attachment is significantly cheaper.

Weight

Surface Cleaner Attachment is lighter and easier to handle.

Cleaning Area

Surface Cleaner has a larger cleaning area of 16.5 inches.

Why Westinghouse WPX3400 Gas Pressure Washer, 3400 PSI is better

Power

WPX3400 has 3400 PSI for heavy-duty cleaning.

Versatility

WPX3400 includes onboard soap tank and multiple nozzles.

Mobility

WPX3400 has a heavy-duty frame and wheels for easy transport.

Overall score

Westinghouse Universal 16.5” Pressure Washer
75
Westinghouse WPX3400 Gas Pressure Washer, 3400 PSI
85

Specifications

SpecWestinghouse Universal 16.5” Pressure WasherWestinghouse WPX3400 Gas Pressure Washer, 3400 PSI
Power4400 PSI3400 PSI
Flow RateN/A2.6 GPM
Weight10 lbs30 lbs
Warranty180 days3 years
Cleaning Area16.5 inN/A

Dimension comparison

Westinghouse Universal 16.5” Pressure WasherWestinghouse WPX3400 Gas Pressure Washer, 3400 PSI

Price Comparison

The Westinghouse WPX3400 Gas Pressure Washer is significantly more expensive than the Westinghouse Universal 16.5” Pressure Washer Surface Cleaner Attachment. Priced at $349.00, the WPX3400 costs about 288% more than the Surface Cleaner Attachment, which is priced at $89.99. This price difference may be a key consideration for consumers on a budget or those who require a more economical solution for their cleaning tasks. While the Surface Cleaner is a standalone attachment, the WPX3400 is a full pressure washer system, justifying its higher price point through additional capabilities.

Functionality

In terms of functionality, the Westinghouse WPX3400 offers a powerful cleaning capability with 3400 PSI and a water flow rate of 2.6 gallons per minute (GPM), suitable for heavy-duty tasks like cleaning driveways and patios. On the other hand, the Surface Cleaner Attachment, designed for gas and electric pressure washers, achieves up to 4400 PSI but relies on the user having a compatible pressure washer. While the Surface Cleaner provides a larger cleaning area of 16.5 inches, the WPX3400 combines both pressure washing and soap application, making it versatile for various cleaning scenarios.

Cleaning Performance

The cleaning performance of the Westinghouse WPX3400 is impressive, with its capability to tackle tough grime on various surfaces including wood, concrete, and metal. With its five interchangeable nozzles, it offers flexibility in cleaning intensity and techniques. The Surface Cleaner Attachment also excels in performance, particularly for flat surfaces like patios and driveways, thanks to its robust stainless steel design and 4400 PSI rating. For users focused on cleaning large areas quickly, the Surface Cleaner may provide an edge, while the WPX3400 delivers comprehensive cleaning across multiple surface types.

Portability

When it comes to portability, the Westinghouse WPX3400 features a heavy-duty steel frame and 12-inch never-flat wheels, ensuring easy maneuverability across different terrains. This design allows users to transport the pressure washer to various locations with minimal effort. In contrast, the Surface Cleaner Attachment is lightweight and designed for easy attachment to existing pressure washers, making it a convenient option for users who already have a compatible machine. However, the Surface Cleaner lacks the built-in mobility features that the WPX3400 offers, potentially limiting its use to stationary applications.

Ease of Use

Both the Westinghouse WPX3400 and the Surface Cleaner Attachment are designed for user-friendliness, but they cater to different audiences. The WPX3400 includes a simple recoil start and is ready to use within minutes, making it accessible for individuals who may not have prior experience with pressure washers. Conversely, the Surface Cleaner is compatible with most gas and electric units and features a 1/4-inch quick-connect fitting, allowing for a straightforward setup. This attachment is ideal for both professionals and homeowners who want to enhance their existing pressure washing capabilities.

Brand Reputation

Westinghouse has been a trusted name in the industry for over a century, known for delivering high-quality products. The WPX3400 has a sales rank of 695, indicating its popularity and reliability among consumers. The Surface Cleaner Attachment, with a sales rank of 2643, is also well-regarded, although it does not have the same level of acclaim as the WPX3400. The brand's commitment to quality is evident in both products, backed by warranties to ensure customer satisfaction and reliability.

Warranty and Support

The Westinghouse WPX3400 comes with a 3-year limited manufacturer service, labor, and parts coverage, providing peace of mind for users investing in a more expensive piece of equipment. The Surface Cleaner Attachment is backed by a 180-day limited warranty, which, while shorter, reflects the nature of the product as an accessory rather than a standalone unit. Consumers should consider the length and extent of the warranty when making their purchasing decision, as it can impact long-term satisfaction and support.

Which should you buy?

Choosing between the Westinghouse Universal 16.5” Pressure Washer Surface Cleaner Attachment and the Westinghouse WPX3400 Gas Pressure Washer ultimately depends on your specific needs and circumstances. If you are seeking a powerful, standalone pressure washer for various cleaning tasks, the WPX3400 is the better investment despite its higher price. However, if you already own a compatible pressure washer and need an efficient way to clean large flat surfaces, the Surface Cleaner Attachment is a cost-effective option that enhances your existing equipment. Assess your cleaning requirements and budget to make the most informed decision.