PowerSmart Self Propelled Gas Lawn Mower 21-inch vs Sun Joe 15-Inch Electric Powered Lawn Dethatcher
Updated July 2026 — PowerSmart Self Propelled Gas Lawn Mower 21-inch leads on engine size and weight.
The PowerSmart is a versatile mower ideal for cutting grass, while the Sun Joe is a cost-effective solution for lawn maintenance through dethatching.
Why PowerSmart Self Propelled Gas Lawn Mower 21-inch is better
Mowing Capability
PowerSmart is designed for mowing, while Sun Joe is for dethatching.
Engine Power
PowerSmart's gas engine offers more power than Sun Joe's electric motor.
Versatility
PowerSmart provides 3-in-1 functionality for various mowing needs.
Why Sun Joe 15-Inch Electric Powered Lawn Dethatcher is better
Price
Sun Joe is significantly cheaper than PowerSmart.
Weight
Sun Joe is lighter and easier to maneuver.
Lawn Health
Sun Joe effectively aerates and revitalizes grass.
Overall score
Specifications
| Spec | PowerSmart Self Propelled Gas Lawn Mower 21-inch | Sun Joe 15-Inch Electric Powered Lawn Dethatcher |
|---|---|---|
| Power Source | Gas | Electric |
| Mowing Function | Yes | No |
| Dethatching Function | No | Yes |
| Adjustable Height | Yes | Yes |
| Self-Propelled | Yes | No |
| Collection Bag Size | 1.4 bushel | 0.5 bushel |
Dimension comparison
Overview of PowerSmart and Sun Joe
The PowerSmart Self Propelled Gas Lawn Mower is priced at $339.99, while the Sun Joe Electric Powered Lawn Dethatcher is notably cheaper at $169.99, making it about 50% less expensive. This price difference reflects the distinct purposes of these two tools: the PowerSmart is a gas-powered mower designed for cutting grass, while the Sun Joe is an electric dethatcher aimed at lawn maintenance. Understanding their functionalities will help potential buyers make an informed choice based on their specific lawn care needs.
Design and Build Quality
The PowerSmart features a robust 21-inch all-steel deck, ensuring durability and longevity in various mowing conditions. The self-propelled design allows for effortless maneuvering, especially on inclined terrains, which is a significant advantage for users with uneven yards. In contrast, the Sun Joe measures 15 inches and is built for dethatching rather than mowing. While it boasts a lightweight design, its construction primarily focuses on ease of use rather than heavy-duty performance. Thus, buyers should consider their specific lawn care tasks when evaluating design and build quality.
Engine and Power
The PowerSmart is equipped with a 170cc OHV 4-cycle engine, delivering solid performance for cutting grass efficiently. This gas engine is designed for easy starting, ensuring that it can tackle various lawn sizes without much hassle. On the other hand, the Sun Joe operates on a 13-amp electric motor, which provides sufficient power for dethatching tasks but lacks the raw power of a gas engine. This difference is crucial for users who need a reliable solution for mowing versus those looking to maintain their lawn's health through dethatching.
Versatility and Functionality
The PowerSmart offers 3-in-1 functionality, allowing users to mulch, side-discharge, or rear-bag clippings. This versatility is ideal for users who need a comprehensive mowing solution. The adjustable mowing height ranges from 1.5 to 3.9 inches, accommodating various grass types and lawn conditions. In comparison, the Sun Joe provides a 2-in-1 solution that combines dethatching with scarifying. It offers customizable depth control with five positions to adapt to different lawn needs, but it does not perform mowing tasks. Therefore, while the PowerSmart is better suited for comprehensive lawn care, the Sun Joe excels in specific maintenance tasks.
Ease of Use
The PowerSmart is designed for efficiency with its self-propelled rear-wheel-drive system, allowing users to navigate their yards without much effort. Its foldable design also saves storage space, making it convenient for homeowners with limited garage space. Conversely, the Sun Joe features four easy-glide wheels that enhance maneuverability during dethatching. The lightweight design and removable collection bag simplify the lawn care process, making it user-friendly. While both products emphasize ease of use, the PowerSmart's self-propulsion gives it an edge for mowing tasks.
Lawn Health
The Sun Joe is specifically tailored for lawn care, equipped with a powerful motor that effectively removes tough thatch and aerates the soil. This process revitalizes grass, promoting healthier growth, which is essential for maintaining a vibrant lawn. The large collection bag facilitates easy disposal of debris, ensuring a cleaner lawn maintenance experience. The PowerSmart, while excellent for mowing, does not directly contribute to lawn health in the same way the Sun Joe does. Therefore, if improving lawn health is the primary concern, the Sun Joe is the better option.
Price and Value
At $169.99, the Sun Joe is approximately 50% cheaper than the PowerSmart, which retails for $339.99. This price difference indicates the varying value propositions of the two products. The PowerSmart, with its robust mowing capabilities, is an investment for homeowners seeking a reliable mower for larger yards. In contrast, the Sun Joe offers excellent value for those focused on maintaining their lawn's health through dethatching at a lower cost. The decision ultimately hinges on the buyer's priorities—whether to invest in a versatile mower or a specialized dethatcher.
Which should you buy?
In conclusion, the decision between the PowerSmart Self Propelled Gas Lawn Mower and the Sun Joe Electric Powered Lawn Dethatcher should be based on individual lawn care needs. If you require a powerful, versatile mower capable of handling various terrains and grass types, the PowerSmart is the right choice. However, if your primary goal is to maintain lawn health through dethatching and aeration, the Sun Joe offers a cost-effective solution. Ultimately, both products excel in their respective areas, so consider your specific lawn care requirements when making your choice.

