RB 9" Small Lawn Mower for Small Spaces, 40V 2Ah vs Westinghouse 16" 15-Amp 2-in-1 Electric Dethatcher
Updated July 2026 — full head-to-head comparison.
Overview
When it comes to lawn care, the RB 9" Small Lawn Mower and the Westinghouse 16" 15-Amp Electric Dethatcher are two distinct yet essential tools. The RB mower is designed for small spaces with its compact size and lightweight design, while the Westinghouse dethatcher focuses on lawn health through aeration and thatch removal. The RB mower is priced at $169.99, while the Westinghouse dethatcher comes in at $159.99, making it about 6% cheaper than the RB option.
Performance
Performance varies significantly between the RB mower and the Westinghouse dethatcher due to their intended functions. The RB mower features a powerful brushless motor operating at 6000 RPM, ideal for cutting grass efficiently in small yards. It supports lawns up to 540 square feet, making it suitable for tight spaces. On the other hand, the Westinghouse dethatcher is equipped with a robust 15-amp motor that produces up to 3500 RPM and a 16-inch clearing path, which excels at aerating and dethatching lawns. This machine is designed to tackle thicker thatch, thanks to its 20 steel scarifying blades and 25 tines, ensuring a healthier lawn.
Design and Usability
The RB mower boasts an ultra-lightweight design at only 11.5 pounds, allowing for easy maneuverability and one-hand steering, making it ideal for small yards and gardens. Its compact size also enables upright storage, saving up to 70% of space. In contrast, the Westinghouse dethatcher weighs 29.5 pounds, which, while still manageable, is considerably heavier and may require more effort to maneuver. It features a foldable handle and a central carrying handle that simplify transportation and storage. Both products are user-friendly, but the RB mower's design may cater more to those needing quick, efficient lawn maintenance in confined spaces.
Cutting and Dethatching Capacity
The cutting capacity of the RB mower allows for three adjustable height settings from 1.2 inches to 2 inches, giving users flexibility in lawn maintenance. This feature is particularly beneficial for keeping grass healthy and well-groomed. In contrast, the Westinghouse dethatcher offers five adjustable height settings ranging from +1/4 inch to -1/2 inch, allowing for more precise dethatching and aeration. This versatility is crucial for homeowners looking to improve lawn health by removing thatch and ensuring better airflow to the roots.
Safety Features
Safety is a significant consideration for both products, but they approach it differently. The RB mower includes an advanced safety design that automatically stops when tilted beyond 20°–70°, adhering to US safety standards. This feature is especially helpful for beginner users who may not have extensive lawn care experience. On the other hand, the Westinghouse dethatcher incorporates a motor overload auto shutdown feature, which protects the motor from damage during heavy use. Both machines prioritize safety, but the RB mower may provide peace of mind for those less experienced in lawn maintenance.
Maintenance and Storage
When it comes to maintenance, the RB mower stands out due to its brushless motor, which requires zero maintenance, making it an excellent option for hassle-free lawn care. Its detachable aluminum handle allows for easy storage, while the compact design means it can fit in small spaces. Conversely, the Westinghouse dethatcher, while efficient, may require more upkeep due to its motor and moving parts. However, it does include a 14.5-gallon thatch collection bag, which simplifies the cleanup process after dethatching. Both machines offer convenient storage solutions, but the RB mower's ultra-lightweight nature and space-saving design give it an edge in this category.
Price Comparison
At $169.99, the RB mower is priced higher than the Westinghouse dethatcher, which retails for $159.99. This makes the Westinghouse option about 6% cheaper, which may appeal to budget-conscious consumers. However, the price difference may be justified for those who prioritize the specific features of the RB mower, such as its lightweight design and maintenance-free motor. Ultimately, the choice may come down to personal preferences and intended lawn care tasks.
Which should you buy?
Choosing between the RB 9" Small Lawn Mower and the Westinghouse 16" Electric Dethatcher depends on your specific lawn care needs. If you have a small yard and prioritize ease of use, maneuverability, and zero maintenance, the RB mower is an excellent choice. However, if your goal is to improve lawn health through dethatching and aeration, the Westinghouse dethatcher offers superior functionality with its powerful motor and adjustable height settings. Consider your lawn size, maintenance requirements, and budget to make the best decision for your outdoor space.

