AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with vs PowerSmart Self Propelled Gas Lawn Mower 21-inch
Updated July 2026 — AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with wins on weight and storage space, PowerSmart Self Propelled Gas Lawn Mower 21-inch wins on engine cc.
The AMERISUN offers a more economical choice with solid performance, while the PowerSmart provides self-propulsion and a slightly more powerful engine. Choose based on your specific lawn care needs.
Why AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with is better
Price
AMERISUN is $101.50 cheaper
Weight
AMERISUN is lighter at 68 lbs
Maneuverability
AMERISUN is easier to maneuver in tight spaces
Why PowerSmart Self Propelled Gas Lawn Mower 21-inch is better
Engine Power
PowerSmart has a 170cc engine
Self-Propulsion
PowerSmart offers self-propulsion
Traction
PowerSmart performs better on slopes
Overall score
Specifications
| Spec | AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with | PowerSmart Self Propelled Gas Lawn Mower 21-inch |
|---|---|---|
| Engine Type | 4-Stroke OHV | 4-Cycle OHV |
| Cutting Options | 3-in-1 | 3-in-1 |
| Height Adjustment | 6-Position | 6-Position |
| Start System | Recoil | Recoil |
| Drive Type | Push | Self-Propelled |
Dimension comparison
Overview of the AMERISUN and PowerSmart Lawn Mowers
The AMERISUN 21-Inch Push Gas Lawn Mower is priced at $238.49, while the PowerSmart Self Propelled Gas Lawn Mower costs $339.99, making the AMERISUN about 30% cheaper. Each mower caters to different user needs, from push to self-propelled operation, which can influence the choice for potential buyers.
The AMERISUN features a powerful 144cc 4-stroke OHV engine and is ideal for residential yard maintenance with its 3-in-1 functionality, while the PowerSmart, equipped with a more robust 170cc engine, offers self-propulsion and is touted for its efficiency on uneven terrain. Both models are designed for small to medium-sized yards, making them suitable for similar applications.
Engine Performance Comparison
The AMERISUN boasts a 144cc 4-stroke OHV engine, which delivers substantial cutting power, making it an excellent choice for routine lawn maintenance. The easy-start recoil system adds convenience, ensuring a hassle-free mowing experience. In contrast, the PowerSmart features a slightly more powerful 170cc 4-cycle OHV engine, designed for better cutting efficiency and ease of starting, thanks to its recoil starter and auto choke.
While both engines are gas-powered and efficient, the PowerSmart's higher displacement means it may tackle tougher grass with greater ease. However, the AMERISUN's engine is still robust enough for residential use, and its lightweight design can make it easier to maneuver in smaller spaces.
Cutting Deck and Versatility
The AMERISUN features a 21-inch rust-resistant steel deck that helps to manage tough grass effectively. This deck allows for three mowing options: mulching, bagging, and side discharge, providing versatility for different lawn care needs. It also includes a 1.4-bushel grass catcher, making cleanup effortless.
Similarly, the PowerSmart also has a 21-inch steel deck and offers 3-in-1 functionality. Users can choose between mulching, side discharge, or rear-bagging options, again featuring a 1.4-bushel capacity grass bag for easy disposal. This similarity in cutting deck size and versatility means that both mowers can perform well across a variety of lawn conditions.
Weight and Maneuverability
Weighing in at 68 lbs, the AMERISUN is designed for easy maneuverability, particularly for homeowners who may not be comfortable with heavier equipment. Its 7-inch and 10-inch wheels provide stability and ease of movement across various terrains, making it easy to glide across the yard.
On the other hand, the PowerSmart is lighter at 54 lbs, which enhances its ease of use even further. The rear-wheel-drive self-propulsion system allows for excellent traction on slopes and uneven terrain, making this mower particularly suitable for yards with challenging landscapes. The lightweight construction of both models contributes to their user-friendliness, but the PowerSmart may have an edge in difficult mowing conditions.
Cutting Height Adjustability
Both the AMERISUN and PowerSmart lawn mowers feature adjustable cutting heights, allowing users to customize their mowing experience. The AMERISUN offers a 6-position adjustment ranging from 1.5 inches to 3.9 inches, making it easy to adapt to different grass types and seasonal growth.
In comparison, the PowerSmart also provides a similar 6-position height adjustment, with settings that allow for quick changes from 1.5 inches to 3.9 inches as well. This feature ensures that users can achieve the desired cut efficiently, making both mowers versatile for various lawn heights.
Storage and Portability
The AMERISUN's design includes a foldable handle, which facilitates easy storage in garages or sheds. This feature is particularly beneficial for users with limited storage space, as it minimizes the mower's footprint when not in use.
The PowerSmart also boasts a foldable design that saves up to 70% of storage space, making it equally convenient for users who need to store their mower compactly. Both mowers are designed with portability in mind, but the PowerSmart's storage efficiency may appeal more to those with very limited space.
Pricing and Value Comparison
The AMERISUN is priced at $238.49, making it a more economical choice compared to the PowerSmart's $339.99 price tag, resulting in about a $101.50 difference. Given the comparable features of both mowers, the AMERISUN presents a compelling value proposition for budget-conscious consumers who still seek quality and versatility.
The PowerSmart, while more expensive, offers self-propulsion and a slightly more powerful engine, which could justify the higher cost for some buyers, especially those with challenging lawn conditions. Ultimately, the choice may hinge on whether consumers prioritize price or specific features.
Which should you buy?
In deciding between the AMERISUN and PowerSmart lawn mowers, the key differences lie in price, weight, engine power, and self-propelled functionality. The AMERISUN is a fantastic option for those looking for a budget-friendly mower that still offers versatility and a reliable performance. Meanwhile, the PowerSmart is ideal for users who require more power and self-propulsion for uneven terrain.
Evaluate your specific lawn care needs and preferences, keeping in mind that both mowers perform well for small to medium yards but cater to slightly different user requirements. Ultimately, your choice should align with your lawn care goals and budget considerations.

