If you’re searching for a mulching mower, you’re likely aiming to maintain a lush, healthy lawn with minimal fuss. The best models efficiently chop grass into fine clippings that fertilize your yard naturally. The AMERISUN 21-Inch 2-in-1 Gas Push Lawn Mower stands out for its versatility and power, perfect for larger or more demanding yards. Meanwhile, cordless options like the WORX Cordless Lawn Mower WG733.1 offer quiet operation and convenience for smaller to medium yards. The main tradeoffs involve balancing power, battery life, and ease of use. Keep reading for a detailed breakdown of these top choices and what to consider before buying.

10
compared
6
brands
6
operation modes
21 Inches
max cutting width
Which mulching mower should you buy?
★ Top Pick
AMERISUN 21-Inch 2-in-1 Gas Pu
Best Overall Gas Mulching Mower for Versatile Yard Care
Dependable 144cc engine for consistent power
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Budget-conscious homeowners with medium-sized yards who want reliable mulching and adjustable height features in a space-efficient design.
PowerSmart 21-Inch Gas Lawn Mo
Reliable 144cc 4-stroke OHV engine
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Small yard owners seeking a quiet, lightweight electric mower with mulching capability and precise control.
WORX Cordless Lawn Mower
Lightweight and easy to maneuver
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Homeowners with small to medium yards who want a quiet, efficient electric mower with edge trimming and mulching options.
WORX Cordless Lawn Mower
20V battery with longer runtime (5.0 Ah)
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Homeowners with medium-sized lawns seeking cordless convenience, mulching, and adjustable height settings in a lightweight package.
LawnMaster CLMF4819X 19-inch B
Cordless with dual 24V batteries for up to 40 minutes runtime
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Cutting Width — compared
AMERISUN 21-Inch 2-in-1 Gas Pu21 Inches
PowerSmart 21-Inch Gas Lawn Mo21 Inches
WORX Cordless Lawn Mower14 Inches
WORX Cordless Lawn Mower14 Inches
LawnMaster CLMF4819X 19-inch B19 Inches
WORX Nitro Cordless Lawn Mower21 inches
PowerSmart 21" Self-Propelled 21 inches
21" Self-Propelled Gas Lawn Mo21 inches
AMERISUN 21" Gas Lawn Mower21 inches
STEELITE 40V 17 Inch Electric 17 inches
Pros & cons at a glance
AMERISUN 21-Inch 2-in-1 Gas Pu
✓ Dependable 144cc engine for consistent power
✗ Manual push drive can be tiring on large or uneven lawns
PowerSmart 21-Inch Gas Lawn Mo
✓ Reliable 144cc 4-stroke OHV engine
✗ Heavier weight may reduce ease of maneuverability
WORX Cordless Lawn Mower
✓ Lightweight and easy to maneuver
✗ Limited to small yards (~1/8 acre)
WORX Cordless Lawn Mower
✓ 20V battery with longer runtime (5.0 Ah)
✗ Limited coverage per charge for large lawns
LawnMaster CLMF4819X 19-inch B
✓ Cordless with dual 24V batteries for up to 40 minutes runtime
✗ Limited runtime for very large lawns
WORX Nitro Cordless Lawn Mower
✓ Powerful brushless motor with 40% more power than previous models
✗ Manual mode switching can disrupt workflow during mowing
PowerSmart 21" Self-Propelled
✓ Powerful 170cc OHV engine for tough mowing conditions
✗ Heavier and noisier than electric counterparts
21" Self-Propelled Gas Lawn Mo
✓ High-torque 170cc engine for thick grass
✗ Heavy and generates emissions and noise
AMERISUN 21" Gas Lawn Mower
✓ Lightweight at around 63 pounds for easy handling
✗ No self-propulsion, requiring manual effort
STEELITE 40V 17 Inch Electric
✓ Lightweight and compact for easy storage and handling
✗ Limited runtime of approximately 25 minutes per charge

Complete the kit

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Key Takeaways

  • The top-rated models combine reliable mulching performance with adjustable cutting heights for versatility.
  • Cordless electric mowers offer quieter operation and less maintenance but often have shorter run times than gas models.
  • Gas-powered mowers tend to provide more power for larger, thicker lawns but are heavier and require more upkeep.
  • Battery capacity and charge time are critical factors in cordless mower usability, especially for bigger yards.
  • Choosing the right mower depends heavily on your yard size, terrain, and preference for fuel type or cordless convenience.
2
PowerSmart 21-Inch Gas Lawn Mo
Best Value Gas Mulcher with Multiple Height Settings
1
AMERISUN 21-Inch 2-in-1 Gas Pu
Best Overall Gas Mulching Mower for Versatile Yard Care
3
WORX Cordless Lawn Mower
Best Compact Electric Mulching Mower for Small Yards

Our Top Mulching Mower Picks

AMERISUN 21-Inch 2-in-1 Gas Push Lawn Mower, 144cc OHV Walk-Behind Mower for Yard, Mulching Side Discharge, 1.5–3.9 in Adjustable Cutting Height, 10-in Rear WheelsAMERISUN 21-Inch 2-in-1 Gas Push Lawn Mower, 144cc OHV Walk-Behind Mower for Yard, Mulching Side Discharge, 1.5–3.9 in Adjustable Cutting Height, 10-in Rear WheelsBest Overall Gas Mulching Mower for Versatile Yard CareCutting Width: 21 InchesEngine: 144cc OHV 4-strokeOperation Mode: ManualVIEW ON AMAZONSee Our Full Breakdown
PowerSmart 21-Inch Gas Lawn Mower, 144cc 4-Cycle OHV Engine, Push Mower with Mulching & Side-Discharge, 6 Cutting HeightsPowerSmart 21-Inch Gas Lawn Mower, 144cc 4-Cycle OHV Engine, Push Mower with Mulching & Side-Discharge, 6 Cutting HeightsBest Value Gas Mulcher with Multiple Height SettingsCutting Width: 21 InchesEngine: 144cc 4-Cycle OHVOperation Mode: PushVIEW ON AMAZONSee Our Full Breakdown
WORX Cordless Lawn Mower, 14″ Electric Mower with Brushless Motor, 6-Position Height Adjustment, 2 Batteries & Charger IncludedWORX Cordless Lawn Mower, 14" Electric Mower with Brushless Motor, 6-Position Height Adjustment, 2 Batteries & Charger IncludedBest Compact Electric Mulching Mower for Small YardsCutting Width: 14 InchesMotor: BrushlessHeight Adjustment: 6 Positions (0.8”-3”)VIEW ON AMAZONSee Our Full Breakdown
WORX Cordless Lawn Mower, 14″ Electric Mower with Mulching & Bagging, 20V Push Lawn Mower with 6-Position Height Adjustment, 5.0 Ah Battery & Charger Included, WG733.1WORX Cordless Lawn Mower, 14" Electric Mower with Mulching & Bagging, 20V Push Lawn Mower with 6-Position Height Adjustment, 5.0 Ah Battery & Charger Included, WG733.1Best Versatile Electric Mulching Mower with Edge PrecisionCutting Width: 14 InchesMotor: BrushlessHeight Adjustment: 6 Positions (1”-3”)VIEW ON AMAZONSee Our Full Breakdown
LawnMaster CLMF4819X 19-inch Brushless Cordless Lawn Mower with 2X24V MAX 4.0Ah Battery and a Dual Charger 6 Cutting PositionLawnMaster CLMF4819X 19-inch Brushless Cordless Lawn Mower with 2X24V MAX 4.0Ah Battery and a Dual Charger 6 Cutting PositionBest Cordless Power for Medium Lawns with Mulching & Adjustable HeightsCutting Width: 19 InchesMotor: BrushlessHeight Adjustment: 6 Positions (1.4”-3.4”)VIEW ON AMAZONSee Our Full Breakdown
WORX Nitro Cordless Lawn Mower, 21″ Electric Mower for 1/2 Acre, Brushless Push Lawn Mower with 7-Position Height Adjustment, 2 × 5.0 Ah Batteries & Charger Included, WG752WORX Nitro Cordless Lawn Mower, 21" Electric Mower for 1/2 Acre, Brushless Push Lawn Mower with 7-Position Height Adjustment, 2 × 5.0 Ah Batteries & Charger Included, WG752Best Overall for Cordless EfficiencyPower Source: 2 × 20V 5.0Ah batteriesCutting Width: 21 inchesMax Adjustable Height: 4 inchesVIEW ON AMAZONSee Our Full Breakdown
PowerSmart 21″ Self-Propelled Gas Lawn Mower | 170cc OHV Engine | Rear-Wheel Drive for Slopes | 3-in-1 Bag, Mulch & Discharge | 6 Cutting Heights | Durable Steel Deck| Rear-Wheel Drive | Medium YardPowerSmart 21" Self-Propelled Gas Lawn Mower | 170cc OHV Engine | Rear-Wheel Drive for Slopes | 3-in-1 Bag, Mulch & Discharge | 6 Cutting Heights | Durable Steel Deck| Rear-Wheel Drive | Medium YardBest for Sloped Terrain and Larger YardsEngine Displacement: 170ccCutting Width: 21 inchesHeight Adjustment: 6 positions from 1.5″ to 3.9″VIEW ON AMAZONSee Our Full Breakdown
21″ Self-Propelled Gas Lawn Mower, 170CC Engine, 3-in-1 Mulching, Bagging & Side Discharge, 7-Position Height Adjustment, Easy Lawn Care for Large Yards & Thick Grass21" Self-Propelled Gas Lawn Mower, 170CC Engine, 3-in-1 Mulching, Bagging & Side Discharge, 7-Position Height Adjustment, Easy Lawn Care for Large Yards & Thick GrassBest for Thick Grass and Large YardsEngine Displacement: 170ccCutting Width: 21 inchesHeight Adjustment: 7 positions from 1″ to 3″VIEW ON AMAZONSee Our Full Breakdown
AMERISUN 21″ Gas Lawn Mower, 144cc 4-Stroke, 2-in-1 Mulch & Side Discharge, 6 Height Adjustment, Lightweight Push Mower for Backyard Lawn CareAMERISUN 21" Gas Lawn Mower, 144cc 4-Stroke, 2-in-1 Mulch & Side Discharge, 6 Height Adjustment, Lightweight Push Mower for Backyard Lawn CareBest Lightweight Gas Push Mower for Small YardsEngine Displacement: 144ccCutting Width: 21 inchesHeight Adjustment: 6 positions from 1.5″ to 3.9″VIEW ON AMAZONSee Our Full Breakdown
STEELITE 40V 17 Inch Electric Lawn Mower Cordless, Brushless Motor, 6-Position Height Adjustment, 2-in-1 Bagging & Mulching, Includes 2 x 4.0Ah Batteries and Battery ChargerSTEELITE 40V 17 Inch Electric Lawn Mower Cordless, Brushless Motor, 6-Position Height Adjustment, 2-in-1 Bagging & Mulching, Includes 2 x 4.0Ah Batteries and Battery ChargerBest Compact Cordless for Small LawnsPower Source: 2 × 20V 4.0Ah batteriesCutting Width: 17 inchesMax Adjustable Height: 2.95 inchesVIEW ON AMAZONSee Our Full Breakdown
Specs at a glance
mulching mowerCutting WidthOperation ModeHeight AdjustmentStyle Name
AMERISUN 21-Inch 2-in-1 Gas Pu21 InchesManual2IN1 Gas Lawn Mower
PowerSmart 21-Inch Gas Lawn Mo21 InchesPushGas Lawn Mower
WORX Cordless Lawn Mower14 InchesElectric6 Positions (0.8”-3”)Cordless Electric Mower
WORX Cordless Lawn Mower14 InchesElectric6 Positions (1”-3”)Electric Mulching Mower
LawnMaster CLMF4819X 19-inch B19 InchesCordless6 Positions (1.4”-3.4”)Cordless Electric Mower
WORX Nitro Cordless Lawn Mower21 inchesCordless electric
PowerSmart 21" Self-Propelled 21 inchesGas-powered6 positions from 1.5" to 3.9"
21" Self-Propelled Gas Lawn Mo21 inchesGas-powered7 positions from 1" to 3"
AMERISUN 21" Gas Lawn Mower21 inchesGas-powered6 positions from 1.5" to 3.9"
STEELITE 40V 17 Inch Electric 17 inchesCordless electric

More Details on Our Top Picks

  1. AMERISUN 21-Inch 2-in-1 Gas Push Lawn Mower, 144cc OHV Walk-Behind Mower for Yard, Mulching Side Discharge, 1.5–3.9 in Adjustable Cutting Height, 10-in Rear Wheels

    AMERISUN 21-Inch 2-in-1 Gas Push Lawn Mower, 144cc OHV Walk-Behind Mower for Yard, Mulching Side Discharge, 1.5–3.9 in Adjustable Cutting Height, 10-in Rear Wheels

    Best Overall Gas Mulching Mower for Versatile Yard Care

    View on Amazon

    This model stands out for its reliable 144cc OHV engine and 21-inch cutting width, making it a dependable choice for regular lawn maintenance. Unlike the WORX Cordless Mower, it offers the power and stamina of gas, ideal for larger or more persistent grass growth. Its 2-in-1 system with mulching and side discharge provides flexibility, but the manual push drive means it requires more effort on uneven terrain. The six adjustable height settings from 1.5 to 3.9 inches ensure seasonal versatility, though the 10-inch rear wheels can feel less maneuverable compared to the 14-inch battery-powered options. This pick is perfect for homeowners who want a robust, traditional mower with mulching capabilities, but those seeking minimal maintenance might prefer electric options.

    Pros:
    • Dependable 144cc engine for consistent power
    • Multiple height adjustment options from 1.5 to 3.9 inches
    • 2-in-1 mulching and side discharge system for versatility
    • Durable 21-inch cutting width for efficient mowing
    Cons:
    • Manual push drive can be tiring on large or uneven lawns
    • Relatively heavy and less maneuverable than cordless models

    Best for: Homeowners with medium to large yards seeking powerful, gas-powered mulching without the need for frequent recharging.

    Not ideal for: Small yard owners or those preferring quiet, low-maintenance electric mowers due to the larger size and heavier weight of gas models.

    • Cutting Width:21 Inches
    • Engine:144cc OHV 4-stroke
    • Operation Mode:Manual
    • Maximum Adjustable Height:3.9 Inches
    • Minimum Adjustable Height:1.5 Inches
    • Number of Positions:6
    • Wheels:10-inch rear wheels
    • Power Source:Gas Powered
    • Style Name:2IN1 Gas Lawn Mower
    Our verdict
    “This mower suits homeowners who prioritize power and durability for larger yards and don’t mind the extra effort of a gas push model.”
  2. PowerSmart 21-Inch Gas Lawn Mower, 144cc 4-Cycle OHV Engine, Push Mower with Mulching & Side-Discharge, 6 Cutting Heights

    PowerSmart 21-Inch Gas Lawn Mower, 144cc 4-Cycle OHV Engine, Push Mower with Mulching & Side-Discharge, 6 Cutting Heights

    Best Value Gas Mulcher with Multiple Height Settings

    View on Amazon

    Compared to the Amerisun model, the PowerSmart offers a similar 144cc engine but emphasizes storage efficiency with its space-saving, foldable steel deck—making it ideal for those with limited storage space. Its six height adjustment positions from 1.5 to 3.9 inches provide precise control, but the heavier steel deck adds weight, potentially reducing ease of maneuverability. While it matches the mulching and side-discharge capabilities of the Amerisun, it’s better suited for budget-conscious buyers who want dependable power without extra frills. However, the foldable design might compromise some durability over time. This model is best for owners prioritizing value and compact storage, but less so for those needing a lightweight or highly maneuverable machine.

    Pros:
    • Reliable 144cc 4-stroke OHV engine
    • Six adjustable cutting heights from 1.5 to 3.9 inches
    • Heavy-duty all-steel deck for durability
    • Space-saving foldable design for easy storage
    Cons:
    • Heavier weight may reduce ease of maneuverability
    • Less lightweight than some electric alternatives

    Best for: Budget-conscious homeowners with medium-sized yards who want reliable mulching and adjustable height features in a space-efficient design.

    Not ideal for: Owners with very large lawns or those seeking lightweight equipment for easy handling, due to its heavier steel construction.

    • Cutting Width:21 Inches
    • Engine:144cc 4-Cycle OHV
    • Operation Mode:Push
    • Number of Height Adjustments:6
    • Max Height:3.9 Inches
    • Material:Steel Deck
    • Foldable:Yes
    • Power Source:Gas
    • Style Name:Gas Lawn Mower
    Our verdict
    “This mower offers solid power and adjustable heights at a great price point, perfect for budget-minded homeowners with moderate lawns.”
  3. WORX Cordless Lawn Mower, 14″ Electric Mower with Brushless Motor, 6-Position Height Adjustment, 2 Batteries & Charger Included

    WORX Cordless Lawn Mower, 14" Electric Mower with Brushless Motor, 6-Position Height Adjustment, 2 Batteries & Charger Included

    Best Compact Electric Mulching Mower for Small Yards

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    This lightweight 14-inch electric mower offers excellent maneuverability for small lawns, especially compared to larger gas models like Amerisun or PowerSmart. Its brushless motor provides efficient performance, and the 6-position height adjustment ensures tailored cuts from 0.8 to 3 inches. While the smaller 14-inch deck limits coverage on larger yards, it excels in tight spaces and precise trimming along borders. The dual 20V PowerShare batteries provide up to 1/8 acre of runtime, which is suitable for small to medium yards, but may require additional batteries for larger lawns. Unlike the gas-powered options, this mower runs quietly and requires minimal maintenance, but its limited runtime makes it less ideal for extensive yards. It’s perfect for small yard owners who prioritize ease and quiet operation.

    Pros:
    • Lightweight and easy to maneuver
    • Six adjustable cutting heights
    • Supports mulching and bagging
    • Includes 2 batteries for extended runtime
    Cons:
    • Limited to small yards (~1/8 acre)
    • Battery runtime may require additional batteries for large lawns

    Best for: Small yard owners seeking a quiet, lightweight electric mower with mulching capability and precise control.

    Not ideal for: Owners of large lawns or those needing extended runtime, as the battery capacity limits coverage.

    • Cutting Width:14 Inches
    • Motor:Brushless
    • Height Adjustment:6 Positions (0.8”-3”)
    • Battery System:20V PowerShare
    • Included Batteries:2
    • Runtime:Up to 1/8 acre
    • Operation Mode:Electric
    • Style Name:Cordless Electric Mower
    Our verdict
    “This compact electric mower is perfect for small yards and tight spaces, offering low noise and minimal maintenance, but less suited for larger properties.”
  4. WORX Cordless Lawn Mower, 14″ Electric Mower with Mulching & Bagging, 20V Push Lawn Mower with 6-Position Height Adjustment, 5.0 Ah Battery & Charger Included, WG733.1

    WORX Cordless Lawn Mower, 14" Electric Mower with Mulching & Bagging, 20V Push Lawn Mower with 6-Position Height Adjustment, 5.0 Ah Battery & Charger Included, WG733.1

    Best Versatile Electric Mulching Mower with Edge Precision

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    Compared to the smaller 14″ model, the WG733.1 offers an improved 20V battery and a highly maneuverable 14-inch deck, making it a versatile option for small to medium yards. Its cut-to-edge design reduces trimming time around borders, while the 6-position height adjustment from 1 to 3 inches allows for tailored cuts. The mulching and bagging functions provide added flexibility, and the 5.0 Ah battery ensures longer runtime—especially useful when tackling slightly larger lawns. The cordless operation and compact design make it easy to handle, but its limited coverage per charge still makes it unsuitable for very large yards. This mower balances power, precision, and convenience, ideal for those who want a reliable electric option with mulching capabilities.

    Pros:
    • 20V battery with longer runtime (5.0 Ah)
    • Cut-to-edge design for precise trimming
    • Supports mulching and bagging
    • Six adjustable heights from 1 to 3 inches
    Cons:
    • Limited coverage per charge for large lawns
    • Requires additional batteries for extended use

    Best for: Homeowners with small to medium yards who want a quiet, efficient electric mower with edge trimming and mulching options.

    Not ideal for: Large yard owners needing extended runtime or higher coverage, as battery capacity and deck size limit efficiency for extensive lawns.

    • Cutting Width:14 Inches
    • Motor:Brushless
    • Height Adjustment:6 Positions (1”-3”)
    • Battery:20V 5.0 Ah
    • Included Batteries:1
    • Operation Mode:Electric
    • Mulching:Yes
    • Style Name:Electric Mulching Mower
    Our verdict
    “This model provides a great balance of power and precision for small to medium yards, with edge trimming and mulching features, but isn’t ideal for large properties due to battery limits.”
  5. LawnMaster CLMF4819X 19-inch Brushless Cordless Lawn Mower with 2X24V MAX 4.0Ah Battery and a Dual Charger 6 Cutting Position

    LawnMaster CLMF4819X 19-inch Brushless Cordless Lawn Mower with 2X24V MAX 4.0Ah Battery and a Dual Charger 6 Cutting Position

    Best Cordless Power for Medium Lawns with Mulching & Adjustable Heights

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    This mower combines cordless convenience with strong brushless motor performance, making it ideal for medium-sized yards. Its 19-inch deck covers more ground than the smaller WORX models, and the 2X24V batteries provide up to 40 minutes of runtime—comparable to larger electric options. The six height positions, from 1.4 to 3.4 inches, allow precise control, and the mulching and side-discharge features offer versatility. While it’s less powerful than gas models like Amerisun, it’s a compelling choice for those seeking cordless freedom without sacrificing performance. Its automatic power management system enhances efficiency, but battery life can be limiting for very large lawns. Overall, this model is best for owners who want a cordless, eco-friendly mower with good runtime and adjustable cutting options.

    Pros:
    • Cordless with dual 24V batteries for up to 40 minutes runtime
    • 6 adjustable height positions from 1.4 to 3.4 inches
    • Powerful brushless motor with intelligent power management
    • Includes dual batteries and charger for extended use
    Cons:
    • Limited runtime for very large lawns
    • Larger deck size may be less maneuverable in tight spaces

    Best for: Homeowners with medium-sized lawns seeking cordless convenience, mulching, and adjustable height settings in a lightweight package.

    Not ideal for: Large yard owners or those who prefer gas or corded electric mowers, due to battery runtime and deck size limitations.

    • Cutting Width:19 Inches
    • Motor:Brushless
    • Height Adjustment:6 Positions (1.4”-3.4”)
    • Battery System:2X24V MAX 4.0Ah
    • Runtime:Up to 40 minutes
    • Operation Mode:Cordless
    • Mulching:Yes
    • Style Name:Cordless Electric Mower
    Our verdict
    “This cordless mower offers strong performance and flexibility for medium-yards, with mulching and adjustable heights, suitable for eco-conscious homeowners.”
  6. WORX Nitro Cordless Lawn Mower, 21″ Electric Mower for 1/2 Acre, Brushless Push Lawn Mower with 7-Position Height Adjustment, 2 × 5.0 Ah Batteries & Charger Included, WG752

    WORX Nitro Cordless Lawn Mower, 21" Electric Mower for 1/2 Acre, Brushless Push Lawn Mower with 7-Position Height Adjustment, 2 × 5.0 Ah Batteries & Charger Included, WG752

    Best Overall for Cordless Efficiency

    View on Amazon

    This WORX Nitro model stands out for its combination of power, versatility, and innovative aerodeck technology, which boosts airflow for cleaner cuts and less clogging—an advantage over many traditional electric mowers like the STEELITE 40V. It’s ideal for medium-sized lawns up to 1/2 acre, thanks to its brushless motor delivering 40% more power and a runtime of around 50 minutes with two batteries. Compared to smaller 14-inch models, its 21-inch deck cuts down mowing time significantly. The 3-in-1 functionality—mulching, bagging, and side discharge—adds flexibility, but switching modes requires manual adjustments, which could be quicker. Its lightweight polymer deck resists impact and corrosion, but the higher price point may be a consideration for budget-conscious buyers. The handle folds for space-saving storage, making it convenient for typical suburban yards.

    Pros:
    • Powerful brushless motor with 40% more power than previous models
    • Innovative aerodeck technology for less clogging and better cut quality
    • 7-position height adjustment from 1.5″ to 4″ for customizable mowing
    Cons:
    • Relies on two batteries for optimal runtime, which may be costly to replace
    • Manual mode switching can disrupt workflow during mowing
    • Higher price compared to basic electric mowers

    Best for: Homeowners with medium-sized, flat to mildly hilly lawns who want cordless convenience without sacrificing power.

    Not ideal for: Large properties over 1 acre or uneven terrain, where longer runtime and higher torque are needed from a gas mower.

    • Power Source:2 × 20V 5.0Ah batteries
    • Cutting Width:21 inches
    • Max Adjustable Height:4 inches
    • Number of Height Positions:7
    • Weight:55.6 pounds
    • Operation Mode:Cordless electric
    • Deck Material:Polypropylene
    Our verdict
    “This mower suits tech-savvy homeowners seeking cordless power with advanced airflow technology for medium lawns.”
  7. PowerSmart 21″ Self-Propelled Gas Lawn Mower | 170cc OHV Engine | Rear-Wheel Drive for Slopes | 3-in-1 Bag, Mulch & Discharge | 6 Cutting Heights | Durable Steel Deck| Rear-Wheel Drive | Medium Yard

    PowerSmart 21" Self-Propelled Gas Lawn Mower | 170cc OHV Engine | Rear-Wheel Drive for Slopes | 3-in-1 Bag, Mulch & Discharge | 6 Cutting Heights | Durable Steel Deck| Rear-Wheel Drive | Medium Yard

    Best for Sloped Terrain and Larger Yards

    View on Amazon

    Compared to electric options like the WORX WG752, this PowerSmart gas mower offers the advantage of self-propulsion and a robust 170cc engine, making it better suited for larger or hilly yards. Its rear-wheel drive ensures traction on slopes, unlike many cordless mowers that lack power assist. The steel deck provides durability and a wider 21-inch cutting width reduces mowing time, ideal for medium to large lawns. The 3-in-1 system supports mulching, bagging, and side discharge, with 6 height settings from 1.5″ to 3.9″. However, the tradeoff is increased noise, maintenance, and emissions compared to electric models, plus heavier weight at around 65 pounds. Its manual starting mechanism may be less convenient than battery-powered options, but overall, it delivers robust performance for demanding terrain.

    Pros:
    • Powerful 170cc OHV engine for tough mowing conditions
    • Self-propelled with rear-wheel drive for slopes
    • Durable steel deck with 21-inch wide cut
    Cons:
    • Heavier and noisier than electric counterparts
    • Requires fuel, oil, and regular maintenance
    • Longer startup time due to recoil pull mechanism

    Best for: Homeowners with medium to large, sloped yards needing reliable power and traction on uneven terrain.

    Not ideal for: Small, flat lawns or users preferring quiet, emission-free mowing, as gas engines produce noise and fumes.

    • Engine Displacement:170cc
    • Cutting Width:21 inches
    • Height Adjustment:6 positions from 1.5″ to 3.9″
    • Drive Type:Rear-wheel drive
    • Weight:65.48 pounds
    • Deck Material:Steel
    • Operation Mode:Gas-powered
    Our verdict
    “This gas mower is best for users with large, hilly yards who prioritize power and durability over quiet operation.”
  8. 21″ Self-Propelled Gas Lawn Mower, 170CC Engine, 3-in-1 Mulching, Bagging & Side Discharge, 7-Position Height Adjustment, Easy Lawn Care for Large Yards & Thick Grass

    21" Self-Propelled Gas Lawn Mower, 170CC Engine, 3-in-1 Mulching, Bagging & Side Discharge, 7-Position Height Adjustment, Easy Lawn Care for Large Yards & Thick Grass

    Best for Thick Grass and Large Yards

    View on Amazon

    This Mutaomay 21-inch gas mower excels at tackling thick grass and larger lawns, thanks to its 170cc engine and self-propelled design, making it a solid alternative to electric models like the WORX WG752. Its 7-position height adjustment from 1 to 3 inches allows for precise control, while the steel deck enhances durability and cutting efficiency. The 3-in-1 system supports mulching, bagging, and side discharge, offering versatility for different lawn conditions. Its large rear wheels provide excellent traction on uneven terrain, but the heavier weight and greater noise level are notable tradeoffs. The recoil start may be less convenient than battery electric, yet for thick or overgrown grass, this push mower delivers robust performance where electric counterparts might struggle.

    Pros:
    • High-torque 170cc engine for thick grass
    • Self-propelled with excellent traction on uneven terrain
    • 7-position height adjustment from 1″ to 3″
    Cons:
    • Heavy and generates emissions and noise
    • Requires regular fuel and maintenance
    • Recoil start can be less convenient than electric push-button

    Best for: Homeowners with large, overgrown, or thick lawns needing powerful, reliable mowing with minimal effort from the user.

    Not ideal for: Small or flat lawns, or those seeking a quiet, emission-free mowing experience, due to noise and fuel requirements.

    • Engine Displacement:170cc
    • Cutting Width:21 inches
    • Height Adjustment:7 positions from 1″ to 3″
    • Drive Type:Self-propelled
    • Weight:approximately 65 pounds
    • Deck Material:Steel
    • Operation Mode:Gas-powered
    Our verdict
    “This mower is ideal for users with substantial, challenging lawns that demand power and endurance from a gas mower.”
  9. AMERISUN 21″ Gas Lawn Mower, 144cc 4-Stroke, 2-in-1 Mulch & Side Discharge, 6 Height Adjustment, Lightweight Push Mower for Backyard Lawn Care

    AMERISUN 21" Gas Lawn Mower, 144cc 4-Stroke, 2-in-1 Mulch & Side Discharge, 6 Height Adjustment, Lightweight Push Mower for Backyard Lawn Care

    Best Lightweight Gas Push Mower for Small Yards

    View on Amazon

    Compared to larger, self-propelled models, the AMERISUN 21″ Gas Lawn Mower offers a lightweight and straightforward design suitable for small to medium yards. Its 144cc engine provides reliable power for routine mowing, and the 6-position height adjustment from 1.5″ to 3.9″ offers flexibility for various grass types. Its simple recoil start makes it easy to operate, but it lacks self-propulsion, which could tire users with larger or hilly lawns. The steel deck is durable, yet the lighter weight at around 63 pounds makes it more manageable for quick storage and maneuvering. While it does support mulching and side discharge, it may struggle in dense or tall grass compared to more powerful or larger gas mowers like the PowerSmart 170cc, making it best for regular maintenance rather than heavy-duty tasks.

    Pros:
    • Lightweight at around 63 pounds for easy handling
    • Recoil start for simple operation
    • 6-position height adjustment for versatility
    Cons:
    • No self-propulsion, requiring manual effort
    • Less powerful than 170cc engines in larger or tougher lawns
    • Limited to small- and medium-sized yards

    Best for: Homeowners with small to medium flat yards seeking a lightweight, easy-to-maneuver gas mower for routine lawn care.

    Not ideal for: Large or hilly lawns with thick or overgrown grass, where more power and self-propulsion are beneficial.

    • Engine Displacement:144cc
    • Cutting Width:21 inches
    • Height Adjustment:6 positions from 1.5″ to 3.9″
    • Drive Type:Push
    • Weight:approximately 63 pounds
    • Deck Material:Steel
    • Operation Mode:Gas-powered
    Our verdict
    “This mower suits homeowners who prioritize lightweight design and ease of use for smaller, flat lawns.”
  10. STEELITE 40V 17 Inch Electric Lawn Mower Cordless, Brushless Motor, 6-Position Height Adjustment, 2-in-1 Bagging & Mulching, Includes 2 x 4.0Ah Batteries and Battery Charger

    STEELITE 40V 17 Inch Electric Lawn Mower Cordless, Brushless Motor, 6-Position Height Adjustment, 2-in-1 Bagging & Mulching, Includes 2 x 4.0Ah Batteries and Battery Charger

    Best Compact Cordless for Small Lawns

    View on Amazon

    This STEELITE 40V electric mower is a strong choice for small yards and tight spaces, offering a lightweight, cordless design with a 17-inch cutting deck. Its brushless motor delivers 3400 RPM for efficient cutting, and the 6-position height adjustment from 0.98″ to 2.95″ allows for precise lawn shaping. Compared to larger, battery-heavy mowers like the WORX WG752, its smaller footprint makes storage and maneuvering effortless, but it sacrifices some runtime—around 25 minutes per charge—which limits its usefulness on larger lawns. The dual batteries provide quick swaps, but the limited cutting width means more passes for bigger yards. Its 2-in-1 mulching and bagging system adds convenience, yet the compact size may not be sufficient for overgrown or dense grass, making it best for regular maintenance in small, flat yards.

    Pros:
    • Lightweight and compact for easy storage and handling
    • Includes two batteries for extended use with quick swaps
    • 6-position height adjustment from 0.98″ to 2.95″
    Cons:
    • Limited runtime of approximately 25 minutes per charge
    • Smaller deck size increases mowing time on bigger lawns
    • Less suitable for thick or overgrown grass

    Best for: Homeowners with small, flat lawns needing a lightweight, cordless mower for occasional use.

    Not ideal for: Large or hilly yards or thick grass that requires longer runtime or higher power from larger models.

    • Power Source:2 × 20V 4.0Ah batteries
    • Cutting Width:17 inches
    • Max Adjustable Height:2.95 inches
    • Number of Height Positions:6
    • Weight:about 30 pounds
    • Operation Mode:Cordless electric
    • Deck Material:Plastic/Polymer
    Our verdict
    “This mower is perfect for small, flat yards where lightweight, cordless convenience is a priority.”
mulching mower
10 Best Mulching Mowers for a Lush and Healthy Lawn 27
What makes a great mulching mower
1
Power Source and Performance
Deciding between gas and electric (corded or cordless) models is fundamental.
2
Cutting Height Adjustment
Proper height control is vital for effective mulching and overall lawn health.
3
Mulching System Effectiveness
Not all mulching decks are created equal.
4
Weight and Maneuverability
If you have a small yard or uneven terrain, a lightweight mower will be easier to handle and reduce fatigue.
How to choose your mulching mower
1
How we picked
In evaluating these mulching mowers, I focused on key aspects that impact everyday use and long-term value.
2
Power Source and Performance
Deciding between gas and electric (corded or cordless) models is fundamental.
3
Cutting Height Adjustment
Proper height control is vital for effective mulching and overall lawn health.
4
Mulching System Effectiveness
Not all mulching decks are created equal.
5
Weight and Maneuverability
If you have a small yard or uneven terrain, a lightweight mower will be easier to handle and reduce fatigue.
Vetted mulching mower ·
The best mulching mower, compared
★ Winner AMERISUN 21-Inch 2-in-1 Gas Pu
Best Overall Gas Mulching Mower for Versatile Yard Care
10compared
21 Inchestop cutting width
6operation modes

How We Picked

In evaluating these mulching mowers, I focused on key aspects that impact everyday use and long-term value. Performance was assessed based on mulching effectiveness, cutting height adjustment range, and engine or motor power. Usability factors included weight, maneuverability, and ease of starting or controlling the mower. Maintenance needs, build quality, and overall value also played vital roles, especially for those on a budget or seeking durability. The ranking reflects a balance of these factors, prioritizing models that deliver consistent mulching results while accommodating different yard sizes and user preferences.
Feature comparison
mulching mowerOperation ModeDeck Material
AMERISUN 21-Inch 2-in-1 Gas PuManual
PowerSmart 21-Inch Gas Lawn MoPush
WORX Cordless Lawn MowerElectric
WORX Cordless Lawn MowerElectric
LawnMaster CLMF4819X 19-inch BCordless
WORX Nitro Cordless Lawn MowerCordless electricPolypropylene
PowerSmart 21" Self-Propelled Gas-poweredSteel
21" Self-Propelled Gas Lawn MoGas-poweredSteel
AMERISUN 21" Gas Lawn MowerGas-poweredSteel
STEELITE 40V 17 Inch Electric Cordless electricPlastic/Polymer
Everyday → specialist
Everyday & valuePremium & specialist
Which mulching mower fits you?
The everyday user
All-round, reliable
The enthusiast
Premium & high-performance
The gift-giver
Looks & craftsmanship

Factors to Consider When Choosing Mulching Mower

Selecting the right mulching mower involves understanding several core factors that influence performance, convenience, and overall value. Beyond just price, consider how your yard’s size and terrain will impact your choice, especially when balancing power versus portability. The right mower should match your lawn’s needs and your maintenance preferences, preventing frustration and ensuring healthier grass. Let’s explore the key considerations to help you make an informed decision.

Power Source and Performance

Deciding between gas and electric (corded or cordless) models is fundamental. Gas mowers typically handle larger, tougher lawns better, offering more power but at the cost of heavier weight and increased maintenance. Cordless electric mowers provide quiet, emission-free operation, ideal for small to medium yards, but their run time depends on battery capacity. Consider your yard size and grass thickness to choose a power source that offers enough endurance without sacrificing convenience.

Cutting Height Adjustment

Proper height control is vital for effective mulching and overall lawn health. Look for models offering multiple height settings—at least 3 to 7 options—so you can tailor the cut to your grass type and season. A mower with easy-to-use adjustment levers saves time and effort, especially if you need to change heights frequently for different areas or conditions.

Mulching System Effectiveness

Not all mulching decks are created equal. High-quality mulching blades and well-designed decks produce finer clippings that decompose quickly and enrich your soil. Check reviews or specifications for mulching performance, especially if your yard has dense or thick grass. Be aware that some mowers combine mulching with side discharging or bagging options, which can add flexibility but might impact mulch quality.

Weight and Maneuverability

If you have a small yard or uneven terrain, a lightweight mower will be easier to handle and reduce fatigue. Conversely, heavier models—especially gas-powered ones—offer more stability and power but can be cumbersome. Consider whether you prefer push or self-propelled models; self-propulsion makes larger yards less demanding, but adds to the cost and weight.

Maintenance and Cost

Gas mowers generally require more upkeep—oil changes, spark plugs, and filter replacements—while electric models need less attention. Battery life and replacement costs are also worth considering for cordless options. Balance your budget with how much time and effort you’re willing to invest in mower maintenance over its lifespan.

Frequently Asked Questions

Is a mulching mower better than a bagging mower?

Mulching mowers are typically better for lawn health because they return finely chopped grass clippings to the soil, acting as a natural fertilizer. Bagging mowers remove clippings entirely, which is preferable if you need a tidy yard or have excess grass that could smother your lawn. The choice depends on your yard’s condition and your maintenance preferences—mulching promotes a healthier, more sustainable yard, but it might require more frequent mowing if your grass grows fast.

Can I switch between mulching and side discharging on the same mower?

Many mulching mowers are designed with 2-in-1 systems that allow easy switching between mulching and side discharge. This flexibility is useful if you want to mulch most of the time but occasionally need to clear clippings quickly or handle particularly thick grass. Check the mower’s specifications to confirm it has a simple, tool-free conversion mechanism, which can save time and effort during yard work.

How important is battery capacity for cordless mulching mowers?

Battery capacity directly impacts how long you can mow without recharging, especially on larger lawns. A higher Ah (amp-hour) rating generally means longer run time, but also a higher price. If your yard exceeds half an acre, look for models with at least 4.0Ah or more to avoid frequent stops. Also, consider whether the mower includes multiple batteries or fast-charging options for uninterrupted mowing sessions.

Are gas-powered mulching mowers worth the extra maintenance?

Gas-powered mowers tend to offer more power and longer operation times, making them suitable for larger or tougher lawns. However, they do require regular maintenance, such as oil changes, spark plug replacements, and carburetor cleaning, which can add to ongoing costs. If you prefer a low-maintenance option and have a smaller yard, an electric or cordless model might serve you better without sacrificing too much performance.

What features should I prioritize if I have a hilly yard?

For sloped terrain, self-propelled mowers with adjustable speed and good weight distribution are essential to reduce fatigue and improve control. Look for models with rear-wheel drive or all-wheel drive systems for better traction. Additionally, a lightweight design can make maneuvering easier, but be sure the mower still offers enough power and mulching efficiency for your grass conditions.

Conclusion

For those with large or tough yards, the AMERISUN 21-Inch 2-in-1 Gas Push Lawn Mower offers unmatched power and versatility, making it the best overall choice. Budget-conscious buyers or those with small to medium yards should consider the WORX Cordless Lawn Mower WG733.1 for its ease of use and quiet operation, representing the best value. Beginners or homeowners with uneven terrain will find the STEELITE 40V 17 Inch Electric Lawn Mower simple to handle, ideal for light-duty jobs. If you prefer a premium experience, the WORX Nitro Cordless Lawn Mower combines power, battery life, and convenience in one package. Tailor your choice to your yard size, terrain, and maintenance preferences for the best results in 2026.

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