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AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144cc vs PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn

Updated July 2026 — PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn leads on engine cc and weight.

The AMERISUN offers a more budget-friendly option, while the PowerSmart provides superior power and convenience. Choose based on your lawn care needs.

Why AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144cc is better

Price

AMERISUN is $238.49, cheaper than PowerSmart at $297.49.

Weight

AMERISUN is lighter at 68 lbs.

Maneuverability

Push design allows for more control in tight spaces.

Why PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn is better

Power

PowerSmart has a more powerful 170cc engine.

Self-Propelled

PowerSmart's self-propelled feature enhances ease of use.

Cutting Efficiency

PowerSmart's rear discharge is better for larger areas.

Overall score

AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144cc
75
PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn
85

Specifications

SpecAMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144ccPowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn
Engine Type4-Cycle OHVOHV
Cutting Modes3-in-13-in-1
Height Range1.5"-3.9"1.5"-3.9"
Deck MaterialSteelSteel
Self-PropelledNoYes

Dimension comparison

AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower, 144ccPowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn

Overview of the AMERISUN and PowerSmart Lawn Mowers

The AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower is priced at $238.49, while the PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn Mower costs $297.49, making the AMERISUN about 20% cheaper. Both models offer a 21-inch cutting width and versatile functionality, catering to users looking for efficient lawn care solutions. However, they differ significantly in power, drive type, and specific features, which can influence your buying decision based on your lawn's needs.

Engine Performance and Power

The AMERISUN is powered by a 144cc 4-cycle OHV engine, which is designed for consistent cutting performance on small to medium lawns. In contrast, the PowerSmart boasts a more powerful 170cc OHV engine, providing superior performance, particularly for tougher mowing tasks. This difference in engine size means that the PowerSmart may handle thicker grass and larger areas more efficiently, making it a better choice for those with sprawling yards or challenging terrains.

Drive Type and Maneuverability

The AMERISUN is a push mower, which requires the user to propel it manually. This design can be beneficial for those who enjoy a workout while mowing but may become tiring over larger areas. On the other hand, the PowerSmart features a self-propelled design with rear-wheel drive, which enhances maneuverability and ease of use on slopes or uneven ground. This self-propelling feature can significantly reduce the physical effort needed to mow, making it a more convenient option for users who prefer less strenuous operation.

Cutting Versatility

Both mowers offer versatile 3-in-1 capabilities, allowing for mulching, bagging, and side or rear discharge. The AMERISUN's design includes a large-capacity 1.4-bushel grass catcher, which minimizes the need for frequent emptying during mowing sessions. Similarly, the PowerSmart also utilizes a 1.4-bushel bag for efficient grass collection. However, the distinction lies in the AMERISUN's side discharge feature compared to the PowerSmart's rear discharge, providing the latter with a slightly different mowing experience depending on your lawn's layout.

Height Adjustment Features

Height adjustment is an essential feature in lawn mowers, and both models offer six cutting height settings ranging from 1.5 to 3.9 inches. This flexibility allows users to customize their cutting height based on grass type and seasonal conditions. The ease of adjusting the height with a single lever on the PowerSmart may appeal to those who frequently change their mowing settings, while the AMERISUN provides similar functionality but may require a bit more effort in terms of manual adjustment.

Durability and Build Quality

The AMERISUN features a durable steel cutting deck, which is rust-resistant and built for long-lasting performance, particularly when tackling thick grass. The PowerSmart also sports a robust steel deck, ensuring high efficiency while reducing mowing time. Both models are designed to withstand regular use, but the PowerSmart’s self-propelled feature combined with its powerful engine may lead to a more robust construction overall, suited for more demanding mowing tasks.

Weight and Portability

Weighing in at 68 lbs, the AMERISUN is lightweight and designed for easy maneuverability, making it suitable for smaller yards and tight spaces. The PowerSmart's weight is not specified, but its self-propelled design suggests it may be bulkier. While the AMERISUN’s lighter weight contributes to its user-friendly operation, the PowerSmart’s larger rear wheels and self-propelling capability enhance stability and traction, especially on uneven terrain.

Price Comparison

The AMERISUN is currently priced at $238.49, making it a more budget-friendly choice compared to the PowerSmart, which retails for $297.49. This price difference of about $59 may be significant for budget-conscious buyers. However, potential buyers should weigh the benefits of the PowerSmart's more powerful engine and self-propelled feature against the cost savings of the AMERISUN to determine the best value for their specific lawn care needs.

Which should you buy?

Choosing between the AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower and the PowerSmart 21-Inch 3-in-1 Gas Self-Propelled Lawn Mower ultimately depends on your unique lawn care requirements. If you have a smaller yard and prefer a more affordable option, the AMERISUN is a solid choice. However, if you require a more powerful engine and the convenience of self-propulsion for larger or more challenging lawns, the PowerSmart may justify its higher price. Consider your lawn size, terrain, and personal preferences to make the best decision for your mowing needs.