AMERISUN vs WORX Nitro 21" Cordless Lawn Mower, Brushless
Updated July 2026 — AMERISUN wins on power and weight, WORX Nitro 21" Cordless Lawn Mower, Brushless wins on price and runtime.
The WORX Nitro offers advanced technology and versatility, making it a better choice for larger lawns, while the AMERISUN is a budget-friendly option for smaller spaces.
Why AMERISUN is better
Price
AMERISUN is $155 cheaper
Weight
AMERISUN is lighter at 63 lbs
Simplicity
Gas mowers are straightforward to operate
Why WORX Nitro 21" Cordless Lawn Mower, Brushless is better
Power
WORX has a brushless motor with 40% more power
Runtime
WORX offers 50 minutes of runtime
Versatility
WORX has 3-in-1 functionality for mowing
Overall score
Specifications
| Spec | AMERISUN | WORX Nitro 21" Cordless Lawn Mower, Brushless |
|---|---|---|
| Engine Type | Gas | Electric |
| Mulching | Yes | Yes |
| Side Discharge | Yes | Yes |
| Batteries | N/A | 2 x 20V |
| Maintenance | Regular | Low |
Dimension comparison
Introduction to the Products
In this comparison, we will examine the AMERISUN 21 Inch Gas Push Lawn Mower and the WORX Nitro 21" Cordless Lawn Mower. Both mowers cater to different needs and preferences, making them suitable for various lawn care tasks. The AMERISUN is currently priced at $224.99, while the WORX Nitro commands a higher price of $379.99, making it about 68% more expensive. Understanding their features and functionalities will help you make an informed decision.
Power Source and Performance
The AMERISUN utilizes a powerful 144cc gas engine, providing consistent performance for small to medium yards. Its easy recoil start allows for quick and hassle-free operation. Meanwhile, the WORX Nitro is powered by a brushless electric motor, which delivers 40% more power and 10% longer runtime compared to previous models. This mower is designed to handle lawns up to ½ acre, making it suitable for larger spaces. Therefore, while the AMERISUN is effective for smaller lawns, the WORX Nitro offers enhanced power and efficiency for bigger areas.
Cutting Technology
The AMERISUN features a 21-inch cutting width with 2-in-1 mulching and side discharge capabilities, allowing homeowners to manage thick grass and seasonal growth efficiently. The WORX Nitro takes cutting technology a step further with its Aerodeck technology, which boosts air volume in the cutting deck to prevent clogs and improve cut quality. It also offers 3-in-1 functionality, including mulching, bagging, and rear side-discharging. If you prioritize cutting efficiency and versatility, the WORX Nitro has clear advantages.
Height Adjustment Features
Height adjustment is crucial for achieving the perfect cut, and both mowers offer adjustable cutting heights. The AMERISUN has a 6-position height adjustment ranging from 1.5" to 3.9", allowing for flexibility based on grass types and lawn conditions. The WORX Nitro provides a broader range with its 7-position height adjustment, enabling cuts between 1.5" and 4". The additional height option may be beneficial for users looking for more precise control over their mowing height.
Weight and Storage
The AMERISUN weighs 63 lbs, making it relatively lightweight and easy to handle. Its foldable design enhances storage convenience, allowing for compact storage in garages or sheds. On the other hand, the WORX Nitro is designed for space-saving storage as well, featuring a fully collapsible handle. While the weight of the WORX Nitro isn't specified, the focus on ease of storage indicates that it should also be manageable. If portability and storage are key factors for you, both mowers offer viable solutions.
Battery and Runtime
Battery life is a significant consideration for cordless mowers. The WORX Nitro operates on two 20V 5.0Ah PowerShare Pro batteries, providing a maximum runtime of 50 minutes. This runtime is ideal for mowing yards up to ½ acre. In contrast, the AMERISUN, being gas-powered, does not have a battery runtime to manage but requires refueling as needed. If you prefer the convenience of a cordless mower with a reliable battery, the WORX Nitro stands out in this category.
Maintenance and Convenience
Gas mowers like the AMERISUN typically require regular maintenance, including oil changes and spark plug replacements, which can be seen as a downside. The WORX Nitro, being electric, eliminates the need for such maintenance, providing a more user-friendly experience. Additionally, the onboard charge-level indicator in the WORX Nitro allows for easy monitoring of battery status, enhancing convenience during use. If maintenance is a concern for you, the WORX Nitro offers a more hassle-free solution.
Price and Value
Price is a critical factor when choosing a lawn mower. The AMERISUN is priced at $224.99, making it a more budget-friendly option compared to the WORX Nitro at $379.99. This price difference of about $155 means that the AMERISUN is approximately 41% cheaper. However, the higher price of the WORX Nitro reflects its advanced technology and features, which may justify the investment for users with larger lawns or specific mowing preferences. Assessing your budget against the features you need will be essential in making this decision.
Which should you buy?
Choosing between the AMERISUN 21 Inch Gas Push Lawn Mower and the WORX Nitro 21" Cordless Lawn Mower ultimately depends on your specific needs and preferences. If you have a smaller lawn and are looking for a cost-effective mowing solution, the AMERISUN offers solid performance at a lower price. However, for those seeking enhanced power, versatility, and convenience, especially for larger lawns, the WORX Nitro, despite its higher price, may provide better value in the long run. Consider your lawn size, maintenance preferences, and budget to make the best choice for your mowing needs.

