Choosing the right lawn mower can make lawn care much easier and more efficient. Lawn mowers come in different sizes and styles, but a 21 inch lawn mower strikes a good balance for many homeowners. It offers enough cutting width to handle most small to medium-sized yards without being too bulky or hard to maneuver.
A 21 inch lawn mower is usually easier to push and store than larger models. It can handle various grass types and terrains while fitting through narrower spaces like gates or tight corners. These mowers often come with features such as adjustable cutting heights and bagging options, giving users more control over their lawn’s appearance.
When shopping for a 21 inch lawn mower, the key points to consider are power source, cutting height adjustments, weight, and ease of use. Whether the mower is gas-powered, electric, or battery-operated changes how much maintenance it needs and its overall convenience. The mower’s weight affects how hard it is to push, especially on uneven ground. We tested several popular 21 inch lawn mowers to find ones that offer the best mix of performance and value.
Best 21 Inch Lawn Mowers
We have reviewed many 21 inch lawn mowers to find the best options for different needs. Our list includes reliable, easy-to-use models that deliver good performance and value. This will help you choose the right mower for your yard.
Greenworks 40V 21″ Brushless Cordless Lawn Mower
This mower is a solid choice for those wanting quiet, cordless power with easy handling for medium to large yards.
Pros
- Runs quietly with good torque thanks to its brushless motor
- Smart Pace self-propel system adjusts to your walking speed smoothly
- Dual batteries provide longer mowing time without interruption
Cons
- Heavier than some other cordless mowers, which can be tiring over time
- Takes up some space even with vertical storage
- Assembly is a bit involved for first-time users
We found the Greenworks mower easy to start and operate without dealing with gas or oil. The cordless feature lets us move freely without worrying about cords, and it kept going for nearly an hour on two batteries. The Smart Pace system helped it keep up naturally with our walking speed, which felt less tiring.
The steel deck is strong and cuts through thick grass well, though pushing the mower across uneven ground can be a workout because of its weight. The 7-position height adjustment made it simple to get the right grass length for our yard, and switching between mulching or bagging clippings worked without hassle.
Overall, this mower balances power and convenience with very low maintenance. It might feel bulky if you have smaller hands or a compact storage space, but the quieter operation and long run-time made it one of the best 21-inch options we’ve used.
PowerSmart 21-Inch Gas Lawn Mower
This mower delivers solid performance and reliable power, making it a smart choice for medium-sized yards.
Pros
- Strong 144cc engine starts easily and cuts through thick grass.
- Steel deck is durable and supports both mulching and bagging.
- Adjustable cutting height with six options for a precise trim.
Cons
- Heavier than some push mowers, which can tire you with long use.
- Assembly takes some time and effort before the first mow.
- Not the quietest, so it may be less ideal in noise-sensitive areas.
We found the PowerSmart mower easy to get started once assembled. The engine is powerful enough to handle dense patches without bogging down. Its 21-inch blade covers a good swath of lawn, speeding up the process.
Adjusting the height was straightforward, letting us tailor the cut to lawn conditions. Folding the handle for storage saved a lot of space in the shed, which we liked. The steel deck felt strong and looked like it could last many seasons.
The mower is on the heavier side, so pushing it around took a bit more energy, especially on uneven ground. The noise level is noticeable but expected for a gas mower like this. Overall, it performed well, and this is a reliable pick if you want a durable gas mower with solid features.
Greenworks 60V 21” Cordless Mower
This mower is a strong option if you want powerful cordless cutting without gas fumes or noise.
Pros
- Quiet and easy to push
- SmartCut tech adjusts power based on grass thickness
- Long battery life with quick recharge
Cons
- Heavier than some other electric mowers
- Extra battery needed for bigger lawns
- Assembly can take some time
We found this mower feels solid and cuts well, even in thick or wet grass. The dual blades keep power up without bogging down, which was nice on a damp morning.
Battery life is impressive. Our lawn took nearly 45-50 minutes, and the rapid charger refilled the battery fast. Plus, the mower switches to a second battery automatically if you add one.
The LED headlights and foldable handles add convenience. Still, the mower is on the heavier side, which might be tough for smaller users or those with very uneven land.
Overall, it balances power, quietness, and clean operation well for a cordless mower at this size.
PowerSmart 21-Inch Gas Lawn Mower
This mower is a solid choice if you want a self-propelled model with good power and cutting options for medium yards.
Pros
- Strong 140cc B&S engine that starts easily and runs smoothly.
- Six cutting heights to get the perfect grass length.
- Self-propelled with big rear wheels for easier handling on slopes.
Cons
- Some reports of mechanical issues after several months of use.
- Plastic parts can be fragile and might break during assembly or use.
- Not the lightest mower, so it can feel heavy in tight spaces.
We found the PowerSmart mower easy to start, even after long breaks. The self-propel feature really helps when pushing across uneven ground or hills. Switching between bagging, mulching, and rear discharge was simple and saved us time.
The steel deck held up well through several cuts without dents or damage. Adjusting the cutting height was quick with the single lever, which made it easy to change depending on our lawn’s condition. It covered a good width, so mowing went faster than with smaller decks.
On the downside, some parts felt a bit delicate. The front wheel mounts required careful handling to avoid cracks. We also noticed it’s heavier than other models, which might tire some people on longer lawns. It’s a dependable mower overall, but if you expect heavy daily use, keep potential wear in mind.
BILT HARD 21 Inch Self-Propelled Mower
This mower is a strong choice for those who want easy handling and reliable cutting power on medium to large lawns.
Pros
- Moves smoothly thanks to self-propelled rear-wheel drive
- Easy starting with no choke or primer needed
- Adjusts cutting height quickly with one lever
Cons
- Grass bag opening is narrow, making emptying a bit tricky
- Self-propelled drive has some reports of failing after short use
- Weighs 79 pounds, so it can be heavy to maneuver without power
The 21-inch cutting deck covers plenty of ground with mulching, bagging, or side discharge options. We found the self-propelled feature helpful on slopes and bigger yards because it reduces fatigue.
Starting the engine was straightforward. The no-choke design means less fiddling before use, and the foam handle made pushing comfortable even over longer sessions.
The height adjustments were simple to make. We liked being able to change all four wheels at once to match different grass lengths quickly. However, the grass collection bag takes some patience when emptying due to its small opening.
Overall, this mower feels solid and works well but may be a little heavy for some users. If you want a gas mower with good power and easy drive, this is worth considering.
PowerSmart 21 in. Gas Lawn Mower
This mower offers solid power and flexible cutting options, making it a reliable choice for most home lawns.
Pros
- Starts easily with an auto choke
- Durable steel deck with mulching and side-discharge options
- Smooth to push thanks to large, sturdy wheels
Cons
- Slightly heavy for some users
- Cut edge isn’t as sharp as high-end models
- Some parts like the rear guard feel less sturdy
We found the PowerSmart mower to be pretty straightforward and dependable out on the lawn. It starts up quickly with just one or two pulls, which saves time and frustration. The engine runs smoothly, and the 21-inch blade covers a good width, so mowing goes faster.
The steel deck feels tough and built to last. Switching between mulching and side discharge is simple. The wheels, especially the large rear ones, make it easier to push over grass and small bumps.
While handling it, we noticed the mower is a bit on the heavy side, which might tire some users during long sessions. Also, the cut isn’t razor-sharp, so it may leave a few rough patches compared to pricier models. A minor downside is the rear rubber guard, which can come loose if pushed backward carelessly.
Overall, this mower performs well and offers good value if you want straightforward gas power and a versatile cut without spending too much.
BILT HARD 21 Inch Lawn Mower
This mower is a solid choice if you want a powerful, easy-to-start gas mower with flexible cutting options.
Pros
- Starts easily on the first pull every time
- Adjustable cutting height works well for different grass lengths
- Comfortable grip and smooth wheels make pushing less tiring
Cons
- Can vibrate more than expected when running
- Wheels may need extra tightening before use
- Heavier than some other 21-inch mowers
We found the BILT HARD 21 Inch mower to have a strong engine that cuts through thick grass smoothly. The no-primer, no-choke start system actually works as promised, so it’s quick to get going without fuss. This is helpful if you don’t want to waste time fiddling with settings before mowing.
The 3-in-1 deck is handy because you can switch between bagging, mulching, or side discharge depending on your lawn. Changing the cutting height is simple with the single lever, which lets us adjust from very short to fairly tall grass.
While it is a bit on the heavier side, the large, ball-bearing wheels roll easily on different terrains. The foam-wrapped handle reduces hand strain during longer sessions. We did notice the mower can vibrate quite a bit, and one of the wheels felt loose the first time we used it, so it’s worth checking all parts before starting.
Overall, if you need a reliable, versatile mower and don’t mind a little extra weight, this unit from BILT HARD is a dependable option.
Greenworks 80V 21″ Brushless Cordless Mower
This mower offers a solid blend of power and convenience, making it a smart choice for maintaining medium-sized yards.
Pros
- Powerful brushless motor runs quietly
- Lightweight and easy to maneuver
- LED headlights extend usable mowing time
Cons
- Battery life can be short for larger yards
- Setup takes some effort for first-time users
- Steel deck adds weight compared to plastic models
We found the Greenworks 80V mower to be surprisingly strong for an electric model. It handles thick grass well and cuts evenly thanks to the 21-inch deck and 7 height settings. The brushless motor keeps noise low, which made mowing early or late much more pleasant.
Pushing this mower around was easier than with our old gas mower. The aluminum handles fold down neatly for storage, saving space in the garage. The LED headlights were a nice touch because they let us finish when daylight faded without losing visibility.
Battery life varies by grass thickness, but it worked fine in our half-acre lawn. Keep in mind heavier mowing may drain it quicker. Overall, this mower gave us a nearly maintenance-free experience without oil changes or fuel, which is a big plus.
SENIX 21-Inch Gas Push Mower
This mower is a solid choice for small to medium yards, offering reliable power and easy handling.
Pros
- Starts quickly and runs quietly
- Solid steel deck with 2-in-1 mulching and side discharge
- Adjustable cutting height for different grass needs
Cons
- Throttle cable can be a weak point
- Heavier than some push mowers
- Side discharge can leave a mess if not mulching
Using the SENIX mower felt straightforward. The Briggs & Stratton engine fired up without fuss and kept reasonable noise levels. We liked how the folding handle made it simple to store in a small garage.
Mowing was efficient thanks to the 21-inch cutting width. Switching between mulching and side discharge was handy depending on the lawn condition. The height adjustment had enough settings to keep the grass trimmed just right.
Maneuvering around tight spots was manageable with the large rear wheels. However, the mower’s weight showed when pushing uphill or over uneven ground. Overall, it delivers good performance for the price with a few minor drawbacks.
WORX Nitro 40V 21″ Mower
The WORX Nitro 40V 21″ mower is a solid choice for those needing cordless power and easy handling on small to medium lawns.
Pros
- Runs quietly and cuts clean with Aerodeck technology
- Battery saves power by adjusting speed automatically
- Lightweight with a collapsible handle for easy storage
Cons
- Battery charging takes longer than expected
- Struggles a bit in very thick or tall grass
- Slightly pricey compared to other cordless mowers
We found this mower easy to start and lighter than most gas mowers we’ve used. It glides well over level ground and makes bagging or mulching simple with the 3-in-1 setup. The quieter motor was a nice change from noisy gas machines.
One thing we appreciated was the Intellicut feature. It adjusts motor power to save battery so you can finish your yard without swapping batteries or stopping. The runtime is good enough for about half an acre, which fits many suburban lawns.
However, if your grass gets very long or dense, it can slow down and sometimes require a second pass. The battery also takes a bit to fully recharge, so plan your mowing schedule accordingly. Overall, it handles well and the space-saving handle makes storage easy in smaller sheds or garages.
Buying Guide
When we choose a 21 inch lawn mower, we need to check a few important features. These help us pick the best mower for our lawn size and needs.
First, cutting power matters. Gas mowers usually offer more power than electric ones. But electric mowers are lighter and need less maintenance. We should think about what fits our yard and strength.
Next, the blade height adjustment is useful. It lets us cut the grass short or leave it longer. A mower with multiple height settings gives us better control.
We also need to consider mower type. There are push mowers and self-propelled mowers. Push mowers need more effort but cost less. Self-propelled mowers are easier to use on big or hilly lawns.
Grass collection options matter too. Some mowers have bags to catch clippings. Others mulch the grass and leave it on the lawn. We can choose based on how we like to manage clippings.
Key Features to Compare
| Feature | What to Look For |
|---|---|
| Power Source | Gas or electric, depending on needs |
| Cutting Width | 21 inches for medium lawns |
| Height Adjustment | Multiple settings for different grass |
| Type | Push or self-propelled |
| Grass Collection | Bagging, mulching, or side discharge |
By checking these features, we can find a mower that works well and lasts a long time. It helps us keep our lawn neat and healthy with less hassle.
FAQs
What makes a 21 inch lawn mower effective for our yard?
A 21 inch cutting deck is wide enough to cover a decent area with fewer passes. It balances size and maneuverability, letting us mow efficiently without being too bulky.
Is a 21 inch mower safe for beginners to use?
Yes. Most 21 inch mowers come with safety features like blade brakes and easy-to-use controls. We should always wear protective gear and follow the instructions to stay safe.
How much lawn can a 21 inch mower cover on one run?
It depends on the mower’s power and our walking speed. Generally, it can cover about 1,200 to 1,800 square feet per hour, making it good for small to medium yards.
How do we maintain a 21 inch lawn mower?
Regular cleaning, checking the blade sharpness, and oil changes keep the mower running well. We should also inspect and replace the air filter and spark plug as needed.
How does a 21 inch mower compare to smaller or larger models?
Smaller mowers are lighter but cover less ground, so we spend more time mowing. Larger mowers cover more area but can be harder to handle in tight spaces. The 21 inch size is a good middle ground.
Can a 21 inch mower handle thick or tall grass?
It can, but cutting very tall or thick grass might need slower speeds or multiple passes. For heavy-duty lawn care, a mower with more power or a bigger deck might be better.
Does a 21 inch mower work well with uneven terrain?
Yes, many models are designed to handle slight bumps and slopes. We should choose one with adjustable cutting heights and sturdy wheels for better performance on uneven ground.
Conclusion
We know a 21 inch lawn mower is a great choice for many homeowners. It offers a good balance between size and power. This size helps us mow efficiently without struggling in tight spaces.
Safety is very important. Most 21 inch mowers come with features like blade guards and easy-to-use controls. These help keep us safe while mowing. Choosing models with safety in mind protects us and our families.
Many 21 inch mowers are eco-friendly. Electric and battery-powered options reduce pollution and noise. This makes them better for our environment and neighbors.
When picking a 21 inch mower, we suggest focusing on reliability and performance. A durable machine saves money and time in the long run. It will serve us well season after season.
In summary, a 21 inch lawn mower fits most yards, is safe to use, and can be kind to the planet. We should choose carefully and invest in one that meets our needs. Doing this helps us keep our lawns looking neat and healthy with less effort.
