AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144cc vs Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah
Updated July 2026 — AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144cc wins on engine size and weight, Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah wins on price and run time.
The AMERISUN offers a powerful engine and larger cutting deck at a lower price, while the Greenworks excels in eco-friendliness and low maintenance.
Why AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144cc is better
Price
AMERISUN is $238.49, cheaper than Greenworks at $274.91.
Cutting Deck
AMERISUN has a 21-inch deck compared to Greenworks' 17-inch.
Versatility
AMERISUN offers 3-in-1 mowing options versus Greenworks' 2-in-1.
Why Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah is better
Maintenance
Greenworks is virtually maintenance-free with no gas or oil.
Eco-Friendliness
Greenworks produces no emissions.
Weight
Greenworks is lighter and easier to maneuver.
Overall score
Specifications
| Spec | AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144cc | Greenworks 48V 17" Cordless Lawn Mower , 4.0Ah |
|---|---|---|
| Power Source | Gas | Cordless |
| Cutting Options | 3-in-1 | 2-in-1 |
| Height Settings | 6 Levels | 5 Levels |
| Maintenance | Regular | Low |
| Emissions | Yes | No |
Dimension comparison
Overview
In the realm of lawn care, two standout options are the AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower and the Greenworks 48V Cordless Lawn Mower. The AMERISUN is priced at $238.49, while the Greenworks comes in at $274.91, making it about 15% more expensive. While both mowers cater to different preferences and needs, it's essential to examine their features, performance, and usability to find the best fit for your lawn care routine.
Engine vs. Battery Power
The AMERISUN features a robust 144cc 4-cycle OHV engine that delivers reliable performance, especially for small to medium yards. In contrast, the Greenworks is a cordless model powered by two 24V batteries, totaling 48V. This design allows for quieter operation and eliminates emissions, which is a significant advantage for eco-conscious users. However, the run-time for the Greenworks is limited to about 45 minutes per charge, depending on grass conditions. For those who prefer consistent power without worrying about battery life, the AMERISUN may be the better choice.
Cutting Deck Size
When it comes to cutting width, the AMERISUN has a 21-inch steel cutting deck, which is wider than the 17-inch poly deck of the Greenworks mower. The larger deck means the AMERISUN can cover more ground with each pass, potentially reducing mowing time. However, the Greenworks’ lightweight design allows for greater maneuverability, which can be advantageous in tight spots or intricate lawn layouts. If efficiency is your primary goal, the AMERISUN’s larger cutting deck will likely serve you better.
Versatility in Mowing Options
Both mowers offer versatility in mowing options but in different ways. The AMERISUN supports a 3-in-1 system that includes mulching, bagging, and side discharge, making it suitable for various lawn care preferences. It also comes with a 1.4-bushel grass catcher, which minimizes the need for frequent emptying. The Greenworks model offers a 2-in-1 option, allowing for mulching and rear bagging. While both provide flexibility, the AMERISUN’s additional side discharge capability could make it a more versatile option for users with diverse mowing needs.
Height Adjustment Features
Height adjustment is crucial for achieving the desired cut, and both mowers feature adjustable settings. The AMERISUN offers six levels of height adjustment ranging from 1.5 inches to 3.9 inches, allowing for precise customization based on grass type and seasonal conditions. The Greenworks, on the other hand, provides a single lever with five height positions. While both systems offer flexibility, the AMERISUN gives you a bit more granularity for tailoring your mowing height, which can be particularly useful for tackling overgrown areas.
Weight and Maneuverability
The AMERISUN weighs 68 lbs, while the Greenworks is designed to be lightweight and easy to maneuver. The AMERISUN's weight, combined with its 7-inch front and 10-inch rear wheels, provides stability while mowing. However, the lighter Greenworks model may be easier to control in tight spaces and around obstacles. For users who prioritize ease of handling, especially in smaller yards or intricate landscaping, the Greenworks could prove to be the more user-friendly option.
Maintenance Requirements
In terms of maintenance, the AMERISUN’s gas engine will require regular upkeep, including oil changes and potential winterization. In contrast, the Greenworks is virtually maintenance-free, requiring no gas or oil and producing no emissions. The push-button start and quiet operation further enhance its user-friendly appeal. If low maintenance is a top priority for you, the Greenworks is the clear winner in this category.
Price Comparison
The AMERISUN is currently priced at $238.49, while the Greenworks is listed at $274.91, making the AMERISUN about 17% cheaper. For budget-conscious consumers, this price difference is significant, especially when considering the features offered by both mowers. While the Greenworks provides the benefits of electric power and lower maintenance, the AMERISUN’s lower price point could be a deciding factor for those who prefer gas-powered options and do not mind the upkeep.
Which should you buy?
Choosing between the AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower and the Greenworks 48V Cordless Lawn Mower ultimately depends on your specific needs and preferences. If you value a powerful engine, a larger cutting deck, and versatility in mowing options, the AMERISUN stands out as a strong contender, especially considering its lower price point. Conversely, if you prioritize eco-friendliness, ease of use, and low maintenance, the Greenworks offers compelling advantages. Assess your lawn care requirements, and you'll find that one of these mowers will suit your needs perfectly.

