Greenworks 1900 PSI 1.2 GPM 13Amp Portable Compact vs Westinghouse PWSC12 12" Pressure Washer Surface
Updated August 2026 — Greenworks 1900 PSI 1.2 GPM 13Amp Portable Compact leads on portability and power.
The Greenworks 1900 PSI is a versatile standalone pressure washer, while the Westinghouse PWSC12 is a powerful attachment for existing pressure washers. Choose based on your specific needs.
Why Greenworks 1900 PSI 1.2 GPM 13Amp Portable Compact is better
Versatility
Complete standalone pressure washer for various tasks
Warranty
3-year warranty for long-term reliability
User Experience
Hassle-free push-button start and ergonomic design
Why Westinghouse PWSC12 12" Pressure Washer Surface is better
Price
Lower cost for those with existing pressure washers
Cleaning Power
Higher PSI for efficient flat surface cleaning
Storage
Compact and easy to store attachment
Overall score
Specifications
| Spec | Greenworks 1900 PSI 1.2 GPM 13Amp Portable Compact | Westinghouse PWSC12 12" Pressure Washer Surface |
|---|---|---|
| Power | 1900 PSI | 2500 PSI |
| Flow Rate | 1.2 GPM | N/A |
| Warranty | 3 years | 180 days |
| Portability | High | Medium |
| Nozzles | 3 | 0 |
Dimension comparison
Overview of Greenworks 1900 PSI and Westinghouse PWSC12
The Greenworks 1900 PSI is a powerful electric pressure washer, while the Westinghouse PWSC12 is a versatile surface cleaner attachment. The Greenworks model, priced at $127.99, is designed for various outdoor cleaning tasks, boasting a maximum pressure of 1900 PSI. In contrast, the Westinghouse attachment, available for $26.09, enhances the cleaning capabilities of existing pressure washers, offering a maximum pressure of 2500 PSI. These products cater to different cleaning needs, making them suitable for different users.
Cleaning Power Comparison
The Greenworks 1900 PSI delivers a robust cleaning experience with its maximum pressure of 1900 PSI and a flow rate of 1.2 gallons per minute (GPM). This pressure washer is ideal for tackling stubborn grime on cars, driveways, and patios. The Westinghouse PWSC12, on the other hand, provides an even higher maximum pressure of 2500 PSI, allowing it to effectively clean flat surfaces like decks and driveways quickly. While the Greenworks model is designed for versatility across various surfaces, the Westinghouse attachment specializes in maximizing cleaning efficiency on larger areas.
Design and Portability
The Greenworks 1900 PSI is designed with portability in mind. It features a compact design with heavy-duty wheels, making it easy to transport between cleaning locations. Additionally, its 20-foot hose and 35-foot power cord provide ample reach for most outdoor tasks. In contrast, the Westinghouse PWSC12 attachment is lightweight and simple to store, but it requires an existing pressure washer to operate. Its 12-inch cleaning area allows for efficient cleaning, although it lacks the standalone portability of the Greenworks model.
Versatility of Use
The Greenworks 1900 PSI is equipped with three specialized nozzles, allowing users to switch between cleaning tasks effortlessly. These nozzles include a turbo nozzle for tough dirt and grime, a 25-degree nozzle for vertical surfaces, and a 40-degree nozzle for covering larger flat areas. This versatility makes it suitable for a range of applications, from cleaning vehicles to restoring decks. The Westinghouse PWSC12 attachment adds versatility by enabling users to clean large surfaces quickly, but it is limited to use with compatible pressure washers, which may restrict its usability for some consumers.
Warranty and Durability
The Greenworks 1900 PSI comes with an industry-leading three-year limited warranty, ensuring users have peace of mind regarding the durability of their investment. Its robust construction features a 13-amp universal motor and an axial cam pump designed for prolonged use. Conversely, the Westinghouse PWSC12 is backed by a 180-day limited warranty. While this provides a reasonable assurance of quality, it is significantly shorter than the warranty offered by Greenworks, which may influence potential buyers looking for long-term reliability.
Price Analysis
At $127.99, the Greenworks 1900 PSI is positioned as a more expensive option compared to the Westinghouse PWSC12, which is priced at $26.09. This represents a difference of about 80%, reflecting the Greenworks model's additional features and standalone functionality. However, for those who already own a compatible pressure washer and seek to enhance its capabilities, the Westinghouse surface cleaner offers a cost-effective solution.
User Experience and Accessibility
The Greenworks 1900 PSI is designed for ease of use, featuring a hassle-free push-button start and an ergonomic grip handle. Its comprehensive set of nozzles makes it accessible for both professionals and homeowners. In comparison, the Westinghouse PWSC12 is straightforward to use as well, with a quick-connect fitting for effortless attachment to most pressure washers. However, it may not offer the same level of user experience as a standalone unit like the Greenworks model, especially for those unfamiliar with pressure washer attachments.
Which should you buy?
Ultimately, the choice between the Greenworks 1900 PSI and the Westinghouse PWSC12 depends on your specific needs. If you require a complete pressure washing solution with versatility across various surfaces, the Greenworks model is a robust option with a strong warranty, ideal for homeowners and professionals alike. However, if you already own a pressure washer and are looking for a way to enhance its cleaning capabilities, the Westinghouse attachment provides powerful performance for flat surfaces at a lower cost. Consider your cleaning tasks, budget, and whether you need a standalone unit or an attachment when making your decision.

