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Review of the Roborock Dyad Wet and Dry Vacuum Cleaner

Walter Shillington writes about products he knows firsthand. His articles focus on healthcare, electronics, watches, and household items.

The Roborock Dyad Wet and Dry Vacuum Cleaner

The Roborock Dyad Wet and Dry Vacuum Cleaner

I own a robotic vacuum that capably vacuums and mops the main level of my house. However, it cannot handle the mess my cat leaves when it coughs up a smelly combination of hairball and half-digested breakfast. To deal with this, I keep a dustpan, a scraper, and a rag handy

Rather than lug the robot upstairs, I clean these floors with a stick vacuum and a cordless mop. Then, utilizing the same tools, I clear away the mud and dirt accumulated within my front porch.

I use a steam cleaner to deal with my carpets and rugs. While it doesn’t do a great job, it’s better than nothing.

These cleaning tools consume far too much of my limited closet space and, while I would never do without a robotic vacuum, it would be nice to find one device that could replace the other tools.

Today, I am taking a close look at a likely candidate.


The Roborock Dyad weighs in at 11 pounds. It is 43.8 inches tall, 10.6 inches wide, and 7.5 inches thick. The accompanying dock is connected to power via an AC adaptor.

The Dyad is fitted with two sets of rollers that wash the floor while sweeping debris toward the center of its cleaning head. The solid debris and any liquids are sucked into the dirty water tank. A separate water tank filled with clean water is used to mop the floor.

If the self-clean button is pressed while the Dyad is docked, water is fed from the clean water tank to the rotating rollers and then sucked into the dirty water tank. Over a period of two minutes, the accumulated dirt and grime are removed from the rollers.

This vacuum is equipped with a lithium battery capable of powering the unit for 35 minutes. When placed upon the dock, it takes approximately four hours to charge.


  • Brand: Roborock
  • Name: Wet and dry vacuum cleaner
  • Model: Dyad
  • Rated power: 260 watts
  • Rated voltage: 22.2V/21.6V
  • Weight: 5 kilograms (11 pounds)
  • Dimensions: 111 x 27 x 17 centimeters (43.8 x 10.6 x 7.5 inches)
  • Dock dimensions: 32 x 24 centimeters (12.6 x 9.4 inches)
  • Noise level: 78dB
  • Battery life in auto: 35 minutes (3000 square feet)
  • Battery life in max: 25 minutes
  • Battery capacity: 5000mAh
  • Charging time: 4 hours
  • Clean tank size: 850ml
  • Dirty tank size: 620ml
  • Cleaning mode: Auto, max, and floor drying
  • Roller type: Soft rollers (1 front and 2 rear)
  • Roller motors: Two (counter-rotating)
  • Brush range of movement: 180 degrees
  • Self-cleaning: Yes
  • Edge cleaning: Yes
  • Voice alert: Yes
  • Indicator type: LED
  • Accessories: Dock, AC adapter, maintenance brush, spare filter, and user’s guide

The Manufacturer

Roborock is trademarked by Beijing Rockrobo Technology Co., Ltd. This company is based in Beijing, with R&D and branch offices in Shanghai, Hong Kong, and Shenzhen.


Two motors work separately to power three rollers, one in the front and two in the rear. Spilled liquids and solids are pulled between the two sets of rollers and sucked into the device.

The debris is then vacuumed into the Dyad’s dirty water tank. Liquids settle at the bottom, but solid waste becomes trapped within a removable plastic cage that fits inside the tank. This cage is equipped with a float that activates a full tank alarm and pauses operations when pushed fully upward by rising water.

A filter located at the top of the dirty water tank allows air drawn through the vacuum to continue onward to its ventilation point.

A second tank holds clean water. This water is fed to the rollers below when the Dyad is in operation, allowing the device to mop a floor effectively.

The Breakfast Cereal Test

I dropped a handful of stale Apple Jacks onto a hardwood floor. The Dyad’s rollers crunched the cereal into tiny pieces and deposited them into the dirty water tank.

Cereal littered floor

Cereal littered floor

After vacuuming

After vacuuming

The Slopped Coffee Test

Although it felt very wrong, I deliberately spilled a half cup of perfectly good coffee onto my beautiful, oiled hardwood floor. Then I turned on the Dyad and mopped the entire area. It did a great job sucking up the coffee and mopping away the residue. Because the rollers extend almost completely across the cleaning head, this device edge cleans exceptionally well.

The Sticky Porridge Test

I mixed up a bowl of instant, peach-flavored porridge and ladled it onto my shiny parquet floor. As I slid the Dyad’s cleaning head across the spill, it sucked up the goopy mess. After two additional sweeps, the floor was gleamingly clean.

Spilled porridge

Spilled porridge

After cleanup and mop

After cleanup and mop

The Cat Urine Test

Sometimes my cat does her duty a little too close to the edge of the kitty litter box. Then urine seeps across the floor and dries. Neither my robotic vacuum nor a damp rag can completely remove the residue.

The Dyad did a better job but did not entirely remove the stain. Unilever and Roborock are about to release a detergent that can be used with this cleaning device. That will probably solve this problem.

Dried cat urine

Dried cat urine

After cleanup and mop

After cleanup and mop

The Self Clean Test

I sat the device on its dock and pressed the Self Clean button. For the next two minutes, fresh water flowed into the cleaning head at varying rates, washing the spinning rollers before being sucked into the dirty water tank. This cleaned the system and verified that it functioned properly.

The Experimental Test

Twice in the last year, I managed to spill coffee onto my expensive and delicate mechanical keyboard. Of course, most of the coffee ran across my computer desk and dripped onto the elderly threadbare carpet below. I sopped up what I could, but this poor carpet is well stained and filthy.

Although Roborock does not suggest using the Dyad to clean carpets, I decided to give it a try. I switched from Auto to Max mode and ran the device across this small carpet for about five minutes. By the time I was finished, the dirty water tank was one-third filled with darkly colored water.

The carpet dried within three hours. My before and after photographs don’t show much difference but be assured; the cleaned carpet was softer and smelled much fresher. This experiment was a success.

Having said that, you might think twice before using this device to clean carpets. The swiftly turning rollers are working against a rougher surface than usual. This might reduce the lifespan of both the rollers and their motors. I suspect this harsher than usual treatment might also damage the individual carpet fibers.

Before mopping with the Dyad

Before mopping with the Dyad

After mopping.  Although the photograph shows little difference, the carpet is solfter and smells fresh

After mopping. Although the photograph shows little difference, the carpet is solfter and smells fresh

Gripes and Complaints

Due to the placement of this device’s water tanks, its handle could not be lowered enough to allow the Dyad to mop beneath the chairs on my front porch. I solved this problem by temporally moving the chairs.

Due to its weight and bulkiness, it is challenging to mop staircases with this device. I recommend the use of a Swiffer-type mop when cleaning steps.

This vacuum is fitted with a stand

This vacuum is fitted with a stand


Overall Assessment

Although I plan to hang onto my steam cleaner, this device handles messy wet spills and replaces my stick vacuum and cordless powered mop. Because it separates dirty water and solids, I can deposit the goop into my green bin and dump the used water into my toilet. And cleanup is a breeze; I simply place the Dyad in its dock and press the self-clean button.

The Roborock Dyad is one of the most helpful cleaning devices I have come across. It is heartily recommended.

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

© 2022 Walter Shillington