AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with vs BLACK+DECKER 20-Inch Corded Electric Lawn Mower
Updated July 2026 — AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with wins on power and weight, BLACK+DECKER 20-Inch Corded Electric Lawn Mower wins on price and bag capacity.
The AMERISUN offers more power and a larger cutting deck, while the BLACK+DECKER provides convenience and a longer warranty. Choose based on your specific needs.
Why AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with is better
Power
AMERISUN has a 144cc gas engine.
Cutting Deck
AMERISUN features a 21-inch deck.
Price
AMERISUN is cheaper at $238.49.
Why BLACK+DECKER 20-Inch Corded Electric Lawn Mower is better
Warranty
BLACK+DECKER offers a 2-year warranty.
Weight
BLACK+DECKER is an ultra-light electric mower.
Edge Cutting
BLACK+DECKER has EdgeMax design for close cutting.
Overall score
Specifications
| Spec | AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower with | BLACK+DECKER 20-Inch Corded Electric Lawn Mower |
|---|---|---|
| Engine Type | Gas | Electric |
| Cutting Modes | 3-in-1 | 3-in-1 |
| Starting System | Recoil | Electric |
| Height Settings | 6 | 7 |
| Warranty | N/A | 2 Years |
Dimension comparison
Overview of the AMERISUN and BLACK+DECKER Lawn Mowers
When comparing the AMERISUN 21-Inch 3IN1 Push Gas Lawn Mower and the BLACK+DECKER 20-Inch Corded Electric Lawn Mower, it's essential to consider their distinct features and capabilities. The AMERISUN is priced at $238.49, while the BLACK+DECKER comes in at $259.00, making the AMERISUN about 8% cheaper. This price difference can be a significant factor for homeowners looking for a reliable lawn care solution.
Power and Performance
The AMERISUN boasts a powerful 144cc 4-stroke OHV engine, designed for efficient performance in small to medium yards. This gas lawn mower offers strong cutting power and a hassle-free starting experience. In contrast, the BLACK+DECKER features a 13 Amp motor that provides ample power for cutting through thick grass and overgrowth. While both mowers are effective, those seeking a faster start and robust performance may prefer the AMERISUN’s gas engine.
Mowing Versatility
Both mowers excel in mowing versatility, offering mulching, bagging, and side discharge options. The AMERISUN can handle various mowing tasks with its 3-in-1 functionality, which also includes a 1.4-bushel grass catcher for easy clean-up. The BLACK+DECKER also features a 3-in-1 design, making it ideal for different mowing modes. However, it is worth noting that the BLACK+DECKER has a fabric grass bag that holds 13 gallons, allowing users to gauge when it’s full easily.
Cutting Deck and Height Adjustment
The AMERISUN comes with a 21-inch rust-resistant steel deck, allowing it to cover more ground with each pass. This feature is particularly beneficial for larger lawns. Meanwhile, the BLACK+DECKER has a slightly smaller 20-inch deck but offers a unique EdgeMax design that enables close-up cutting near edges and borders. Both mowers provide adjustable cutting heights, but the BLACK+DECKER has a single lever adjustment with seven settings, ranging from 1.5 inches to 4 inches, allowing for precise customization.
Ease of Use and Maneuverability
The AMERISUN is designed to be lightweight at 68 lbs, making it easy to maneuver across various terrains. Its durable wheels and foldable handle enhance storage convenience. On the other hand, the BLACK+DECKER is also an ultra-light push mower, although it does not specify its weight. Its corded design eliminates concerns about fuel or battery life, making it user-friendly for those with easy access to power outlets.
Warranty and Reliability
When it comes to warranty, the BLACK+DECKER offers a 2-year warranty, providing peace of mind for buyers. The AMERISUN does not specify a warranty period in the available information. This difference may influence customers who prioritize long-term reliability and support, as the BLACK+DECKER gives an assurance of quality and service.
Target Audience
The AMERISUN is well-suited for homeowners with residential yards that require regular maintenance. Its powerful gas engine and larger cutting deck make it ideal for those who prefer gas-powered mowers. Conversely, the BLACK+DECKER appeals to consumers looking for an environmentally friendly option, as it operates on electricity. This mower is perfect for users who have smaller lawns and prefer the convenience of not dealing with gas or emissions.
Which should you buy?
Deciding between the AMERISUN and the BLACK+DECKER largely depends on your specific needs and preferences. If you prioritize power, a larger cutting deck, and a lower price, the AMERISUN is a compelling choice. However, if you value convenience, an electric option, and a longer warranty, the BLACK+DECKER stands out. Ultimately, both mowers have their unique advantages, making them suitable for different types of homeowners and lawn care requirements.

