Our Verdict
Ljuren Wins

Its explicitly stated 12,000Pa suction power provides a clear advantage for deep cleaning, while its significantly larger 1200ml dustbin allows for more cleaning before needing to be emptied, all at a more affordable $99.99 price point. Comvtu, at $119.99, offers a slightly longer maximum runtime of 40 minutes and an anti-hair wrap roller, making it a compelling alternative for homes with pets or where extended light cleaning is a higher priority than raw power.
Bottom Line: Ljuren is the better choice. Its explicitly stated 12,000Pa suction power provides a clear advantage for deep cleaning, while its significantly larger 1200ml dustbin allows for more cleaning before needing to be emptied, all at a more affordable $99.
In-Depth Analysis
How they compare in practice
When comparing the Comvtu and Ljuren cordless vacuum cleaners, a clear distinction emerges in their stated performance metrics and design priorities. The Ljuren stands out with a documented 12,000Pa suction power, offering robust cleaning capability for embedded dirt, pet hair, and general debris on various surfaces. While the Comvtu boasts an "80,000PRM Powerful" motor, the lack of a specific Pascal rating makes direct numerical comparison of raw suction difficult. In real-world use, Ljuren's explicit 12,000Pa suggests it might tackle tougher cleaning tasks with more authority, which is a significant factor for many buyers.
Runtime is another key area, with Comvtu providing a slightly longer maximum of 40 minutes compared to Ljuren's 35 minutes on standard settings. However, both units see significant drops in boost mode, with Comvtu offering 20 minutes and Ljuren 15 minutes. This means for quick, high-power bursts, both are somewhat limited. The Comvtu compensates with an anti-hair wrap roller and integrated LED lights, enhancing user experience by reducing maintenance and improving visibility in dark corners, features not explicitly highlighted by Ljuren. Conversely, Ljuren gains a practical edge with a substantial 1200ml dustbin, more than double Comvtu's 500ml capacity, meaning fewer interruptions for emptying during larger cleaning tasks.
Both vacuums offer the convenience of swappable batteries and HEPA filtration, ensuring clean air exhaust. Charging times are comparable, with Ljuren at 4 hours and Comvtu at 4.5 hours. Ljuren also features a self-standing design and a specified lightweight build at 5.5 lbs, contributing to easier storage and maneuverability. The price point is a critical differentiator: Ljuren is $20 more affordable at $99.99, offering compelling suction power and dustbin capacity for the money. The Comvtu, at $119.99, justifies its higher cost with enhanced features like the anti-hair wrap roller and LED lights, appealing to users who prioritize specific convenience features and a slightly longer standard runtime.
Key Differences
The most significant spec differences at a glance
Suction Power
100% lessRuntime Minutes Max
14% moreWeight
100% lessDustbin Capacity Ml
58% lessCharge Time
12% moreAdvantages
Where each product wins
Comvtu
- Runtime Minutes Max: 14% higher (40 vs 35)
- Weight: 100% lower (0 vs 5.5)
- Runtime Minutes Boost: 33% higher (20 vs 15)
Ljuren
- Suction Power: 100% higher (0 vs 12000)
- Dustbin Capacity Ml: 58% higher (500 vs 1200)
- Charge Time: 12% lower (4.5 vs 4)
Which to Pick for Your Situation
Concrete scenarios with a clear recommendation
For budget-conscious buyers prioritizing raw cleaning power
LjurenThe Ljuren offers 12,000Pa suction and a large 1200ml dustbin for $99.99, providing excellent value for its cleaning performance.
For homes with pets and frequent pet hair issues
ComvtuComvtu's anti-hair wrap roller significantly reduces hair tangles around the brush, minimizing maintenance for pet owners.
For longer, light-duty cleaning sessions without frequent emptying
ComvtuComvtu provides a max runtime of 40 minutes, which is 5 minutes longer than Ljuren, beneficial for covering more ground, though Ljuren has a larger dustbin.
For users needing maximum dustbin capacity and easy storage
LjurenLjuren boasts a 1200ml dustbin, significantly larger than Comvtu's 500ml, and features a convenient self-standing design.
Who Should Buy Which?
Find the right product for your needs
Buy Comvtu if...
Comvtu Cordless Vacuum Cleaner
The Comvtu Cordless Vacuum Cleaner is ideal for homeowners who prioritize convenience, extended standard cleaning sessions, and specific features designed to ease maintenance, especially if they have pets. This buyer likely lives in a medium-sized home where a slightly longer 40-minute maximum runtime is beneficial for covering more ground without needing a recharge. They will appreciate the anti-hair wrap roller, a significant advantage for managing pet hair and minimizing brush roll cleaning. The integrated LED lights are also a plus for those who clean in dimly lit areas like under furniture or in closets, enhancing visibility. While willing to spend a bit more at $119.99, they may not necessarily need the absolute highest suction power, as long as the 80,000PRM motor provides effective daily cleaning. They are willing to trade off some dustbin capacity and explicit suction power for thoughtful features that streamline the cleaning process and improve the user experience.
Buy Ljuren if...
Ljuren Cordless Vacuum Cleaner,
The Ljuren Cordless Vacuum Cleaner is perfectly suited for value-conscious buyers who prioritize raw cleaning power and large capacity at an attractive price point. This buyer is likely tackling a variety of debris, including embedded dirt and pet hair, and will greatly benefit from the explicitly stated 12,000Pa suction power. Their home might be smaller to medium-sized, where efficiency in cleaning and fewer interruptions are key. The substantial 1200ml dustbin capacity is a major draw, allowing for extended cleaning sessions without the constant need to empty, which is a significant time-saver. At just $99.99, it presents a compelling package for those on a tighter budget who refuse to compromise on core performance. The Ljuren buyer values the practical advantages of a self-standing design and a lightweight 5.5 lbs build for easy maneuverability and storage, even if it means foregoing specific features like anti-hair wrap technology or integrated LED lights present in higher-priced competitors.
Spec Comparison
11 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $120 | $100 |
| Rating | 4.9(98) | — |
| Suction Power Pa | 0 | 12000 |
| Runtime Minutes Max | 40 min | 35 min |
| Weight | 0 lbs | 5.5 lbs |
| Dustbin Capacity ml | 500 | 1200 |
| Hepa Filtration | Yes | Yes |
| Attachments Count | 2 | — |
| Charge Time Hours | 4.5 hrs | 4 hrs |
| Swappable Battery | Yes | Yes |
| Runtime Minutes Boost | 20 min | 15 min |
| Model Number | — | K-21B |
| Self Standing | — | Yes |
Swipe horizontally to see all columns
Pros & Cons
Quick overview of strengths and weaknesses
Comvtu Cordless Vacuum
- Anti-hair wrap roller reduces maintenance time
- 40 minute runtime for larger cleaning tasks
- Converts to handheld for multi-surface use
- HEPA filtration captures 99.99% of fine particles
- Maximum power mode runs for only 20 minutes
- Battery requires 4 to 5 hours for a full charge
- HEPA filter needs regular cleaning and replacement
Ljuren Cordless Vacuum
- Lightweight design at 5.5 lbs.
- 12 kPa suction power handles embedded dirt.
- 35-minute run time on standard power setting.
- Detachable battery enables convenient charging.
- Strong suction mode limits runtime to 15 minutes.
- Battery requires 4 hours for a full charge.
Frequently Asked Questions
Common questions about this comparison
Which vacuum cleaner has stronger documented suction power?
The Ljuren K-21B model explicitly states 12,000Pa suction power. While Comvtu mentions an 80,000PRM motor, it does not provide a comparable Pascal rating for direct comparison.
What is the maximum runtime for each vacuum?
The Comvtu offers up to 40 minutes of runtime on its standard setting, while the Ljuren provides up to 35 minutes. Both have reduced runtimes in their respective boost modes.
Do both models offer HEPA filtration and swappable batteries?
Yes, both the Comvtu and Ljuren vacuum cleaners feature HEPA filtration for allergen capture and include swappable batteries for extended use or convenient charging.
Which vacuum has a larger dustbin capacity?
The Ljuren has a significantly larger dustbin capacity of 1200ml. The Comvtu's dustbin capacity is 500ml, meaning the Ljuren can hold over twice as much debris.
What is the price difference between the two vacuum cleaners?
The Ljuren is priced at $99.99, making it the more affordable option. The Comvtu is priced slightly higher at $119.99.
Does either vacuum have special features for pet hair?
The Comvtu features an anti-hair wrap roller, which is specifically designed to prevent hair from tangling, reducing maintenance for pet owners.
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