Roborock E4 vs. E35 vs. Coredy R750
If you need a robot that will automate cleaning for you, you might want to consider choosing between the Coredy R750, Roborock E4, and Roborock E35.
Many things worry us during these unprecedented times. Cleaning and mopping floors should be the least of our concerns. However, the idea of having a little robot to vacuum and mop your floors may sound like a luxury to the average homeowner.
While the likes of Roomba s9+ and i7+ may seem to cost you an arm and a leg, you can actually enjoy the perks of an automated cleaner at half the price of these popular units.
The Coredy R750, Roborock E4, and Roborock E35 work primarily as a vacuum cleaner, but you may also employ them to mop your floors. All three units work well for both bare floors and textured surfaces.
But between Coredy R750, Roborock E4, vs. E35, which among these robot mop-and-vacuum hybrids should you pick? Read on to learn more about their distinctive features.
Table of Contents
Comparison Table
Last update on 2021-08-02 / Affiliate links / Images from Amazon Product Advertising API
Roborock E4
The Roborock E4 shares many common features with the E35. Among these are the 2000 Pa suction power, 5200-mAh-capacity battery, 640-ml dustbin capacity, and smartphone integration.
But unlike its predecessors, this newcomer is packed with more advanced sensors and software to surmount the previous models.
For starters, the E4 features a tiny LIDAR scanner on top of the unit. Using the OpticEye™ motion tracking, the robot tracks its movements through the corners and obstacles along the way.
You may also monitor the robot’s progress in real-time via the app. The upgraded sensors and software boost the E4’s cleaning efficiency up to 11% more, notes the manufacturer.
My favorite part, however, is the robot’s ability to climb rugs and doorway thresholds that are up to 0.8-inch in height.
The E4 is also capable of mopping your floors, but the mopping system is optional. So, it boils down to you whether or not you want to get the mop attachment.
- 2000 Pa maximum suction power and auto Carpet Boost
- Uses inertial navigation (OpticEye™ motion tracking + dual-gyroscope)
- 0.8-inch climbing ability
- Has six cleaning modes to choose from
- Offers an optional mopping system that is 28% larger than previous developments
- Houses a 5200 mAh battery that lasts up to 150 minutes per charge
- Has a 640 ml dustbin capacity and washable HEPA filter
- Optional mopping system
- Can be very noisy
- The setup can be difficult due to the lack of instructions
- Its mopping ability is not equal to the robot’s vacuuming standard
Roborock E35
The Roborock E35 is a mid-tier robot vacuum that bridges the gap between budget-friendly options and flagship models.
For the price of a Roomba, you can get two or even three of these competent cleaners and enjoy the perks of a mopping system. The E35 knows how to avoid rugs and carpets while in mopping mode, so it is such a relief that you don’t have to babysit your robot vacuum.
The most impressive quality of the Roborock E35 is its 2000 Pa motor, which is a rare feature in mid-tier robovacs. This unit does a superb job of extracting pet hair and other deep-seated debris from carpet fibers.
The E35 can tackle medium- and high-pile carpeting since the robot uses its maximum suction power when Carpet Boost is on. Fortunately, this model has a crazy long battery life of 150 minutes and a sizable dustbin that can hold up to 640-ml worth of debris.
Although the Roborock E35 doesn’t boast of cutting-edge navigation, it vacuums in straight lines and doesn’t miss a spot. Equipped with dual-gyroscopes and dual-optical motion tracking sensors, it speeds through floors in a seamless manner and wiggles itself in narrow spaces to clean hard-to-reach areas.
Likewise, it dances around stray objects to prevent jamming and slows down when it approaches furniture.
- Comes equipped dual-gyroscopes and dual-optical motion tracking sensors for creating quick and effective cleaning paths
- Has a network of 13 sensors to provide efficient cleaning in complicated areas
- Offers six cleaning modes to give you the flexibility to get the right clean
- Offers Spot Cleaning and Carpet Boost
- Boasts of 2000 Pa powerful suction
- Houses a 5200 mAh battery that lasts up to 150 minutes per charge
- Has a 640 ml dustbin capacity and washable HEPA filter
- Has the ability to vacuum, mop, and sweep
- The motor can be very loud during its maximum setting
- The robot may sometimes experience connection issues
- Difficult to configure over WiFi due to the lack of instructions
Coredy R750
The Coredy R750 is an affordable option that offers plenty of pop. Not only can the slim robot navigate underneath furniture with ease, but it glides over rugs and transitions from hardwood floors to low-pile carpets seamlessly, as well.
The robot automatically boosts its suction power from 600 Pa to 1000 Pa when it is cleaning carpets. But even on its highest setting, the Coredy R750 is no louder than a box fan.
So, hats off the quietest robot vacuum in this list!
What’s more, this unit also features a mopping system. However, this unit lacks some of the most coveted mapping technologies. And so, the robot may get lost in a big house with multiple archways or open doors. Luckily, it comes with two 6.6-feet boundary strips, so you can put up virtual boundaries right away.
Another added benefit of this unit is that you can link it with your smart devices.
I also like that Coredy goes out of its way to help its user understand what the robot is doing and what it is saying. You will find plenty of informational stickers on the packaging, as well as underneath the unit.
- Boasts of Boost-Intellect Technology, enabling an automatic increase in suction power
- Max suction power is 1600 Pa, which is a lot higher than other models in its price range
- Uses a washable HEPA filter that you can easily remove for cleaning
- Comes equipped with a 2600 mAh battery, offering 120 minutes of battery life per charge
- Includes a pair of extra spinning side brushes and two 6.6-feet boundary strips
- Compatible with Amazon Alexa and Google Assistant
- Vacuums and mops simultaneously
- The cleaning pattern is random
- No mapping abilities
- You can’t tell where the robot is currently cleaning
- Not that effective for high-pile carpets
Face to Face Comparison: Coredy R750 vs. Roborock E4 vs. E35
Navigation and Mapping
Coredy R750
Smart navigation and mapping are features that the Coredy R750 lacks.
But given its price point, it should come as no surprise. The R750 uses a suite of basic infrared sensors, but they are far better at detecting obstructions and steep edges compared to other robots within its price range.
I also applaud the R750 for its ability to find its way back home.
Roborock E4
The Roborock E4 is a quick and systematic cleaner, thanks to its network of sensors. This model comes equipped with onboard gyroscopes that will identify small changes in the angle of motion, including whether or not the robot has flipped. The robot can track its movements, as well as identify edges and obstacles.
Best of all, the E4 features OpticEye™ motion tracking. Equipped with a laser and a LED-based motion tracking system, the robot will know where it has been and create accurate calculations of the zones it needs to cover.
With all these features combined, the Roborock E4 can create an internal map and the best cleaning path so that it finishes its task a lot faster the next time.
Roborock E35
Navigation is a strong suit of the Roborock E35. In fact, E35’s excellent navigation makes it sit atop a mountain of budget robovacs. The robot also features a slim profile, so it drives underneath furniture with ease.
Although lasers don’t guide the robot, it comes equipped with dual-gyroscopes and dual-optical motion tracking sensors. Combined with complex algorithms, it navigates around your home in a systematic path that resembles a LIDAR navigation system. The E35 also keeps tabs with every progress it makes and uses the data it has collected to complete the next cleaning session a lot swifter.
While the Roborock E35 may sometimes have its slow moments, it does a fantastic job of cleaning complicated areas without getting itself trapped. The E35 slows down as it approaches a potentially large obstruction to keep delicate furniture, pets, and young children safe.
Brushes
Coredy R750
The main brush for the Coredy R750 consists of silicon and bristles. All you need to do is snap the brushroll into the receptacle on the bottom of the robot.
The unit also comes with four spinning side sweepers, but you will only be using two at a time. The side brushes will agitate dirt from both sides, directing it into the suction vent.
Roborock E4
Pet hair is no longer a problem. The Roborock e4 features an anti-tangle brushroll and a sweeping side brush to lift pet hair effectively.
While I wouldn’t say it is 100% tangle-free like that of a high-end Roomba, it provides satisfactory results nonetheless.
Roborock E35
The Roborock E35 uses a multi-textured brushroll with a floating design, allowing it to stick close to bare floors for a thorough clean and rise to clean carpeted surfaces. The brush is soft enough to clean hardwood floors without scratching but is also strong enough to agitate stubborn dirt.
Although the brushroll isn’t 100% tangle-free, I like that pet hair moves to the sides. You can easily pull pet hair from each side after sliding the brushroll off the bearing. The design is a great timesaver if you have a dog that sheds constantly.
What I like the most about this robovac is that it leaves fresh brushed carpet lines that make you not want to walk across the floor.
Dirt Detection and Cleaning Modes
Coredy R750
The Coredy R750 has a Spot Mode, where it makes tight spirals outward for about three feet and vice versa.
Using the remote control, you may also order the robot to clean a localized area.
Furthermore, this model has three different cleaning modes.
Roborock E4
Unfortunately, the Roborock E4 doesn’t seem to offer a feature equivalent to Dirt Detect™.
As for the cleaning modes, you may choose between Silent, Balanced, Turbo, Max, Gentle, and Carpet.
Roborock E35
Press the Spot Clean button on the Roborock E35 or via the app to make the robot clean a specific area. During this mode, the robot will map out a 1.2-meter diameter square and vacuums the zone like how you would mow a yard.
Moreover, the Roborock E35 lets you choose between four different cleaning modes: Silent, Standard, Strong, and Max.
Dustbin Capacity and Filtration System
Coredy R750
The Coredy R750 features a multi-stage filtration system, including a washable HEPA filter.
Since this robot can pick a frightening amount of dust, debris, pet hair, and potential allergens, it is nice to know that the dirt compartment has a 500 ml capacity.
While the dust box seems a bit smaller than other robovacs, it is a sufficient size for the job.
Roborock E4
The Roborock uses a HEPA E117 cartridge filter to ensure highly effective filtration of the air in the lowest possible resistance.
What’s more, the filter is washable so that you can save some more on maintenance costs.
Roborock E35
The Roborock comes with two high-efficiency filters, one of which is already pre-inserted by the manufacturer into the dustbin. The filter filters out 99.2% of dust, notes the manufacturer.
Also, the filters are washable, so you may not need frequent replacements. Speaking of the dustbin, it has a generous 640 ml capacity so that the robot can clean a spacious home in one go.
Connectivity
Coredy R750
The Coredy R750 has a remote control, which is a nice consideration since some old folks prefer to avoid the complexities of new technology.
Nevertheless, you may also download the Coredy Robot app and connect your device. You may even prompt voice commands via Alexa and Google Assistant.
Roborock E4
To make most of the Roborock E4, you need to download the Mi Home app. Among the many things you can do, include the following:
- Set detailed schedules
- Start or stop cleanups
- Adjust the suction strength on the fly
- Receive notifications
- View detailed cleaning history
- View your home’s layout
While the Mi Home app gives you numerous ways to manage your robot, you may also integrate voice control through Google Assistant and Alexa for hands-free operation.
Roborock E35
You can power up the Roborock E35 manually or from your smartphone via the Mi Home app. You can do many things through the app, including the following:
- Start or cancel a cleaning job
- Schedule cleaning sessions
- Check the battery level of the robot
- View detailed cleaning history
- Track the health of the filter, brush, and other accessories
The app also includes a one-key style and one rocker-style remote so you can direct your robot using your smartphone.
Power Suction
Coredy R750
The Coredy R750 has three settings for its powerful suction.
The suction power measures 600 Pa on Low and climbs up to 1000 Pa if it runs onto a carpeted surface. Lastly, the robot goes full throttle and boosts itself to 1600 Pa when needed.
Roborock E4
The Roborock E4 has a suction power rated at 2000 Pa on its highest setting, which is an 11% increase compared to previous models, like the Roborock E25.
Roborock E35
The Roborock E35 also has a whopping 2000 Pa suction power at its maximum setting, cleaning fine particles to large debris in one swipe.
You may also tone down the suction power down of this big sucker.
Run-Time
Coredy R750
The Coredy R750 uses a 2600 mAh Li-ion battery. As with any robot vacuums, its runtime depends on the chosen mode of cleaning.
The Coredy R750 has an average runtime of 120 minutes, but it can extend 30 minutes more if you select the lowest setting.
Roborock E4
Under the hood of the Roborock E4 sits a 5200 mAh Li-ion battery.
This model can last up to 150 minutes per charge, depending on the strength of the power suction used. According to the manufacturer, it should be able to tackle 2152 sq. feet of space on a single charge
Roborock E35
The battery life is another impressive aspect of the Roborock E35.
This unit comes equipped with a 5200 mAh Li-ion battery, offering up to 150 minutes of non-stop cleaning.
Virtual Barriers
Coredy R750
The Coredy R750 comes with two 6.6-feet rolls of magnetic boundary strips. Know that budget robovacs don’t typically offer this feature. Anyhow, this rare addition provides you a significant amount of control over where the robot goes.
Using the strips, you can determine which rooms and spaces the R750 should avoid. To do that, you need only to lay a strip across a doorway or some other opening. The robot comes equipped with dual-hall sensors to detect the signals emitted by the magnetic strips.
Roborock E4
All Roborock robot vacuums from the E series have a built-in compass to sense magnetic boundary markers.
Unfortunately, you will have to purchase boundary strips if you wish to make use of this feature.
Roborock E35
The Roborock E35 doesn’t come with boundary strips, but you can purchase them separately.
Noise
Coredy R750
The Coredy R750 is among the quietest robot vacuums in the market. At 45 decibels in its lowest setting, you could barely hear the robot move around. The robot also falls into the 65-dB range in its highest setting. Still, that equals a quiet conversation in a library.
Roborock E4
Rated at 70 decibels, the Roborock E4 can be as loud as your grandfather’s old school radio when at its peak. Anyway, the decibel rating lowers down as the suction power decreases.
Roborock E35
The Roborock E35 measures 70 decibels during its highest setting. Since the robot bases its suction power on the floor type, it won’t always be that loud. Additionally, you can adjust the volume of the robot’s programmed voice, which is handy during phone calls and Zoom meetings.
Mop Function
Coredy R750
The Coredy R750 isn’t just a robot vacuum but is also a mop. While the robot moves across floors to suck up dust and debris, it also eliminates minor stains and leaves hardwood floors a subtle sheen.
Although the mopping system of the R750 doesn’t replace traditional mopping, it ensures you don’t always have to wipe up small stains on your floors. The mop ensures that the robot doesn’t leave a trail of dirt behind.
Roborock E4
The Roborock E4 features integrated mopping that allows you to adjust the water flow of the reservoir as per work preferences. The manufacturer claims the add-on mopping system is now 28% larger compared to other models from the E-series.
Since that’s hard to determine, I just gave the manufacturer the benefit of the doubt. Note that the mopping system is an optional extra. You may or may not purchase it along with the E4.
Roborock E35
The mopping system of the Roborock E35 may not replace your steam mop, but you don’t have to mop as often manually.
Bear in mind that you can remove the cloth pad and water tank if you don’t want to use it for a particular cleaning schedule.
Frequently Asked Questions
How often will I need to clean or maintain my robot vacuum?
But as a general rule of thumb, you should clean the main brushroll and side spinning brushes regularly with the cleaning tool provided by the manufacturer. The HEPA should be changed every three to four months, depending on the frequency the robot is used. You may also want to check the wheels occasionally for stuck debris.
Which robot vacuum has the best suction?
Which robot vacuum supports voice control with SIRI?
Why are Roborock vacuums better than Coredy?
Which robot vacuum is good for pet hair?
Conclusion
There aren’t many robot mop-and-vacuum hybrids that live up to their promise.
So, if you are looking for a unit that can suck up a frightening amount of debris in its path and mop up dust and stains in its way, the Coredy R750, Roborock E4, and Roborock E35 should deliver the results you are looking for. I definitely recommend all three cost-effective robot vacuums to you. But in the end, the choice should depend on your cleaning priorities.
While these three models aren’t the best I’ve seen, I guarantee their performance is above average, and what you pay is certainly worth the money. But if you are looking for the creme de la creme, I advise you to invest in a Roomba s9+ and a Braava Jet M6.
