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Greenworks 12" Surface Cleaner Pressure Washer Attachment vs McKillans Foam Cannon for Pressure Washer - Car

Updated August 2026 — Greenworks 12" Surface Cleaner Pressure Washer Attachment wins on versatility, McKillans Foam Cannon for Pressure Washer - Car wins on foam quality and design.

The Greenworks Surface Cleaner is a more economical choice for large outdoor cleaning, while the McKillans Foam Cannon excels in car washing performance.

Why Greenworks 12" Surface Cleaner Pressure Washer Attachment is better

Price

Greenworks is $22.99 cheaper.

Warranty

Greenworks offers a 3-year warranty.

Cleaning Width

Greenworks has a 12" cleaning width.

Why McKillans Foam Cannon for Pressure Washer - Car is better

Foam Quality

McKillans produces thicker foam.

Design

McKillans has a wide mouth design for easier soap dilution.

Adjustability

McKillans allows adjustable foam output.

Overall score

Greenworks 12" Surface Cleaner Pressure Washer Attachment
75
McKillans Foam Cannon for Pressure Washer - Car
85

Specifications

SpecGreenworks 12" Surface Cleaner Pressure Washer AttachmentMcKillans Foam Cannon for Pressure Washer - Car
BrandGreenworksMcKillans
Connector Type1/4-inch1/4-inch
MaterialPlasticBrass
Cleaning PurposeSurfaceCar
User Rating4.54.7

Dimension comparison

Greenworks 12" Surface Cleaner Pressure Washer AttachmentMcKillans Foam Cannon for Pressure Washer - Car

Overview of the Products

When comparing the Greenworks 12" Surface Cleaner and the McKillans Foam Cannon, it's important to note their distinct functionalities. The Greenworks 12" costs $26.99, making it about 46% cheaper than the McKillans Foam Cannon, which is priced at $49.98. While both tools are designed to enhance your pressure washing experience, they serve different purposes, catering to specific cleaning needs.

The Greenworks Surface Cleaner is ideal for large flat surfaces, effectively tackling driveways and patios, while the McKillans Foam Cannon specializes in delivering thick foam for car washing. Understanding these differences can help you choose the right tool for your cleaning tasks.

Design and Build Quality

In terms of design, the McKillans Foam Cannon features a wide mouth design that allows for easier dilution of soap, offering a more stable base to prevent accidental spills. This thoughtful design makes it user-friendly, especially for those who frequently wash their vehicles. The Greenworks Surface Cleaner, on the other hand, is built for durability and efficiency, with a 12” cleaning width that allows users to cover larger areas quickly.

While the Greenworks attachment is compatible with most pressure washers through a 1/4-inch quick connect feature, the McKillans Foam Cannon boasts high-quality brass connectors for durability against high pressure. Each product is designed with the intention of maximizing cleaning efficiency, but the McKillans Foam Cannon's adjustable foam output sets it apart in versatility.

Cleaning Performance

The cleaning performance of the Greenworks Surface Cleaner is tailored for expansive areas like sidewalks and decks, providing a thorough clean with its wide surface area. With a sales rank of 2366, it has shown to be popular among consumers seeking efficient outdoor cleaning solutions. In contrast, the McKillans Foam Cannon is designed to produce thicker foam, which aids in loosening dirt and preventing swirl marks when washing cars.

The ability to adjust the foam thickness and output angle with the McKillans unit allows for a customizable cleaning experience, making it especially effective for detailed vehicle cleaning. While the Greenworks offers solid performance for larger surfaces, the McKillans excels in precision cleaning for automobiles.

Compatibility and Usage

When it comes to compatibility, the Greenworks Surface Cleaner is designed to fit most pressure washers, making it a versatile choice for users who already own a pressure washing system. Its 1/4-inch quick connect feature ensures easy attachment to compatible machines.

The McKillans Foam Cannon also features a 1/4 quick connector, allowing it to work with both electric and gas-powered pressure washers. This broad compatibility makes it a flexible option for users who may switch between different types of pressure washers. Therefore, if you are looking for a tool that can adapt to various setups, both products deliver on compatibility.

Price Comparison

The Greenworks Surface Cleaner is priced at $26.99, which represents a significant savings compared to the McKillans Foam Cannon at $49.98. This price difference of about $22.99 reflects a difference of approximately 46%. For budget-conscious consumers, the Greenworks option offers a more economical choice for those looking to maintain outdoor spaces.

However, the McKillans Foam Cannon's higher price points to its specialized functionality, particularly for car enthusiasts who prioritize a thorough wash. While the Greenworks is aimed at general outdoor cleaning, the McKillans justifies its price with enhanced performance features for vehicle washing.

Warranty and Support

Both products come with warranties, providing peace of mind for buyers. The Greenworks Surface Cleaner is backed by a 3-year warranty, which indicates a strong commitment to quality and customer satisfaction. This warranty is particularly valuable for users who may experience issues over time.

In contrast, the McKillans Foam Cannon offers a 1-year residential warranty, which, while shorter, still shows confidence in its durability and performance. For users concerned about long-term investment, the longer warranty period on the Greenworks product could be a significant deciding factor.

User Experience and Satisfaction

The user experience for both products has been generally positive, as indicated by their sales ranks—Greenworks at 2366 and McKillans at 4311. The Greenworks Surface Cleaner appeals to users who prioritize efficiency in large area cleaning, while the McKillans Foam Cannon attracts those who seek the best results for car washing.

Consumers have praised the Greenworks for its effective surface cleaning capabilities, while the McKillans has received accolades for its adjustable foam output and overall durability. Each product offers unique advantages, catering to different cleaning needs and preferences.

Which should you buy?

Choosing between the Greenworks 12" Surface Cleaner and the McKillans Foam Cannon ultimately depends on your specific cleaning requirements. If you need an affordable and efficient solution for large outdoor areas, the Greenworks at $26.99 is a solid choice, especially with its 3-year warranty. Conversely, if your primary focus is on achieving a detailed car wash with customizable foam options, the McKillans Foam Cannon, despite its higher price of $49.98, offers superior performance in that niche.

Assess your cleaning needs and budget to determine which tool will best enhance your pressure washing experience.

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