PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn vs Sun Joe 15-Inch Electric Powered Lawn Dethatcher
Updated July 2026 — PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn leads on engine size and price.
The PowerSmart mower is ideal for larger yards with its powerful engine and versatility, while the Sun Joe is a cost-effective solution for smaller lawns focused on dethatching.
Why PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn is better
Power
PowerSmart has a 170cc engine compared to Sun Joe's 13-amp motor.
Versatility
PowerSmart offers 3-in-1 functionality versus Sun Joe's 2-in-1.
Cutting Width
PowerSmart has a 21-inch cutting width compared to Sun Joe's 15 inches.
Why Sun Joe 15-Inch Electric Powered Lawn Dethatcher is better
Price
Sun Joe is $169.99, significantly cheaper than PowerSmart's $297.49.
Maintenance
Sun Joe requires less maintenance due to its electric design.
Maneuverability
Sun Joe's lightweight design allows for easier handling.
Overall score
Specifications
| Spec | PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn | Sun Joe 15-Inch Electric Powered Lawn Dethatcher |
|---|---|---|
| Power Source | Gas | Electric |
| Functionality | 3-in-1 | 2-in-1 |
| Bestseller Rank | 7264 | 2581 |
| Cutting Heights | 6 | 5 |
| Motor Power | 170cc | 13-amp |
Dimension comparison
Overview of PowerSmart 21-Inch Gas Mower
The PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn Mower is a robust option for homeowners with medium to large yards. Priced at $297.49, it features a powerful 170cc OHV engine that promises smooth start-up and consistent performance. This model has a bestseller rank of 7264, indicating a solid customer base. The mower’s 21-inch cutting width allows for efficient mowing, reducing the time needed to maintain your lawn. With its self-propelling capability and large rear wheels, it's designed to handle uneven terrain with ease, making it a practical choice for various mowing conditions.
Overview of Sun Joe 15-Inch Electric Dethatcher
In contrast, the Sun Joe 15-Inch Electric Powered Lawn Dethatcher offers a different approach, focusing on lawn maintenance through dethatching rather than mowing. At $169.99, it is about 43% cheaper than the PowerSmart mower. This machine is equipped with a 13-amp motor, which efficiently removes thatch and revitalizes grass. With a bestseller rank of 2581, it enjoys significant popularity among users looking for an effective lawn care solution. The Sun Joe's compact 15-inch width makes it ideal for smaller yards and allows for easy maneuverability, making it suitable for homeowners seeking to maintain their lawn without the bulk of a traditional mower.
Engine and Power Source Comparison
The PowerSmart mower is powered by a reliable 170cc OHV engine, ideal for tackling tougher mowing jobs. Its gas-powered system provides extended run time and performance, particularly in larger yards. On the other hand, the Sun Joe dethatcher operates on a 13-amp electric motor. While this electric design is quieter and requires less maintenance, it may limit its effectiveness in larger areas without access to power outlets. The difference in power sources reflects the intended use of each product, with the PowerSmart excelling in mowing and the Sun Joe focusing on dethatching.
Functionality and Versatility
PowerSmart's mower shines with its 3-in-1 functionality, allowing users to bag, mulch, or rear discharge grass clippings. This versatility is particularly beneficial for homeowners who want to customize their lawn care routine according to the season or lawn condition. Additionally, the mower offers six cutting height adjustments ranging from 1.5 inches to 3.9 inches, allowing for tailored mowing heights. In contrast, the Sun Joe dethatcher provides a 2-in-1 solution with its dethatching and scarifying capabilities. It features a 5-position depth control, enabling users to adapt to their lawn's specific needs. While both products emphasize versatility, they cater to different lawn care tasks.
User Experience and Maneuverability
The PowerSmart mower boasts a self-propelled system with large rear wheels that enhance traction and maneuverability on slopes and uneven terrain. This design is advantageous for those with hilly or complex yard layouts. The Sun Joe dethatcher, however, prioritizes user comfort with its four durable, easy-glide wheels that facilitate effortless navigation across the lawn. Although the Sun Joe is smaller, it compensates with its lightweight design, making it easier to handle during prolonged use. Each product's user experience is tailored to its intended purpose, with the PowerSmart focusing on efficient mowing and the Sun Joe on effective dethatching.
Maintenance and Care
Maintenance is a critical aspect of lawn equipment ownership. The PowerSmart mower, being gas-powered, will require routine checks such as oil changes and air filter replacements to ensure optimal performance over time. In contrast, the Sun Joe dethatcher's electric motor demands less maintenance, as it does not require fuel or oil changes, appealing to those who prefer a low-maintenance option. The differences in maintenance requirements highlight the varied ownership experiences, where the PowerSmart might involve more upkeep compared to the easier care of the Sun Joe.
Price Considerations
At $297.49, the PowerSmart mower is a significant investment compared to the Sun Joe dethatcher, which is priced at $169.99. This price difference of about $127.50 reflects not only the different functionalities but also the types of tasks each product is designed to handle. While the initial cost of the PowerSmart may seem higher, it offers a rugged, gas-powered mowing solution suited for larger areas, while the Sun Joe’s lower price makes it an attractive option for homeowners with smaller yards seeking to manage thatch and maintain grass health.
Which should you buy?
Choosing between the PowerSmart 21-Inch Gas Mower and the Sun Joe 15-Inch Electric Dethatcher ultimately depends on your lawn care needs. If you require a powerful mower for larger yards and appreciate the versatility of bagging, mulching, and rear discharge, the PowerSmart mower is the better choice, despite its higher price. However, if you have a smaller lawn and are primarily focused on dethatching and revitalizing your grass, the Sun Joe offers a cost-effective and efficient solution. Consider your specific lawn care requirements and budget to make the best decision for your yard maintenance.

