Outsunny 1800W High Pressure Washer vs 21V Cordless Pressure Washers with Bucket
Updated August 2026 — The Outsunny 1800W High Pressure Washer is more powerful and versatile, making it suitable for heavy-duty tasks, while the 21V Cordless Pressure Washers with Bucket is lightweight and portable for lighter jobs.
The Outsunny 1800W High Pressure Washer is more powerful and versatile, making it suitable for heavy-duty tasks, while the 21V Cordless Pressure Washers with Bucket is lightweight and portable for lighter jobs.
Why Outsunny 1800W High Pressure Washer is better
Power
Outsunny has a 1800W motor vs RivetCore's 21V motor
Flow Rate
Outsunny offers 420 litres/hour vs RivetCore's 4-8 litres/min
Accessories
Outsunny includes a complete kit with multiple accessories
Why 21V Cordless Pressure Washers with Bucket is better
Portability
RivetCore weighs only 2.5 lbs vs Outsunny's heavier design
Battery Operation
RivetCore has two batteries for extended use
Price
RivetCore is £25.99 vs Outsunny's £61.85
Overall score
Specifications
| Spec | Outsunny 1800W High Pressure Washer | 21V Cordless Pressure Washers with Bucket |
|---|---|---|
| Brand | Outsunny | RivetCore |
| Current Price | £61.85 | £25.99 |
| Max Pressure | 150 bar | 60 bar |
| Flow Rate | 420 l/h | 4-8 l/min |
| Motor Type | Electric | Cordless |
Dimension comparison
Price Comparison
When it comes to pricing, the Outsunny 1800W High Pressure Washer is significantly more expensive than the 21V Cordless Pressure Washers with Bucket. The Outsunny is priced at £61.85, while the RivetCore model retails for just £25.99. This price difference of £35.86 makes the RivetCore a more budget-friendly option, especially for casual users or those who may only need a pressure washer occasionally. However, the higher price of the Outsunny may reflect its more powerful motor and additional features, which might appeal to those looking for a more robust cleaning solution.
Power and Performance
In terms of power, the Outsunny boasts an impressive 1800W motor that delivers a maximum pressure of 150 bar. This makes it suitable for tackling tough cleaning tasks effectively. In contrast, the RivetCore’s 21V pure copper motor provides a maximum pressure of 870PSI (approximately 60 bar), which is adequate for lighter tasks such as cleaning bikes or patios. While the Outsunny’s performance is superior for heavy-duty cleaning, the RivetCore’s pressure is still sufficient for everyday use, making it ideal for users who may not need the intense power of the Outsunny.
Portability and Design
The RivetCore pressure washer stands out for its portability. Weighing just 2.5 lbs, it is incredibly lightweight and features a design that allows users to connect directly to a tap or draw water from a bucket. This flexibility makes it an excellent choice for outdoor activities or locations without immediate access to a water source. On the other hand, the Outsunny, while still portable, is heavier and may require more effort to move around. It includes an integrated hose reel and easy-grip steel handle, which aids in transportation but does not match the RivetCore's convenience for spontaneous use.
Accessories and Usability
The Outsunny comes as a complete pressure washer kit, including a spray gun, wand, six-metre hose, inlet adaptor, snow foam bottle, and nozzle cleaner. This comprehensive package ensures users have everything they need for various cleaning tasks right out of the box. Conversely, the RivetCore features two smart nozzles and an included foam spray canister, which enhances its versatility. While the RivetCore is designed for ease of use, the Outsunny’s extensive accessories may provide more options for those looking to tackle a range of cleaning scenarios.
Battery Life and Operation
The RivetCore excels in battery operation, equipped with two 2.0Ah batteries that allow for extended runtime. This feature is particularly advantageous for users who need to complete larger jobs without waiting for a recharge. In contrast, the Outsunny operates with a direct power connection, negating battery concerns but requiring proximity to an electrical outlet. The choice between these two systems comes down to user preference; those who value mobility might prefer the RivetCore, while users who need consistent power might find the Outsunny more suitable.
Cleaning Versatility
Both pressure washers offer versatility in their cleaning capabilities but cater to different needs. The Outsunny is designed for a wide range of tasks, including cleaning vehicles, outdoor furniture, and garden fences, thanks to its high pressure and flow rate of 420 litres per hour. The RivetCore, while less powerful, is still effective for cleaning cars, bikes, and patios, with a flow rate of 4-8 litres per minute. The Outsunny's higher performance makes it more suited for demanding jobs, whereas the RivetCore is ideal for light to moderate cleaning tasks.
Safety Features
Safety is an important consideration, and both models incorporate features that enhance user protection. The Outsunny includes an automatic shut-off feature when the trigger is not engaged, adding a layer of safety during operation. The RivetCore's design is also user-friendly, featuring a lightweight build that reduces the risk of accidents during use. While both products prioritise safety, the automatic shut-off of the Outsunny may provide added peace of mind for those concerned about leaving the washer unattended.
Which should you buy?
Choosing between the Outsunny 1800W High Pressure Washer and the 21V Cordless Pressure Washers with Bucket ultimately depends on your specific needs and budget. If you require a powerful, versatile machine capable of handling heavy-duty cleaning tasks, the Outsunny is worth the investment at £61.85. However, for those seeking a lightweight, portable option for lighter cleaning jobs at a significantly lower price of £25.99, the RivetCore is an excellent choice. Consider what tasks you need to accomplish, your budget, and how often you plan to use the pressure washer to make the best decision for your circumstances.
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