Shark Rocket ZS351 Zero-M Ultra-Light Corded Stick Vacuum

Shark Rocket ZS351 Zero-M is convertible, ultra-light, corded, stick vacuum cleaner, which follows design philosophy of previous Shark Rocket vacuums, like HV39* models. It features so-called Zero-M cleaner head which actively removes pet and human hair tangles from the brushroll and deeply cleans carpets and other surfaces commonly found at home and apartments.

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Shark Rocket ZS351 Zero-M Features and Specifications

Shark Rocket ZS351 Zero-M is convertible unit, and can be used as:

- ultra-light stick vacuum cleaner with metal wand and the main cleaner head, designed for cleaning various floor types,

- handheld vacuum cleaner with metal wand for cleaning elevated surfaces with different cleaning tools,

- handheld vacuum cleaner without metal wand for fine vacuuming of surfaces like beds, sofas, upholstery, stairs etc.

Shark Rocket ZS351 Zero-M can be used as the main vacuum cleaner in small to medium homes and apartments or as a second vacuum cleaner in large homes and apartments for quick cleanups.

Shark Rocket ZS351 Zero-M is powered using 30 feet (~9.15 m) long power cord, allowing the user to clean large area using just one wall power socket. Also, such long power cord is important in emergencies when there is no time to look for the nearest wall socket, for vacuuming stairs and similar areas that aren't always next to the wall socket.

Shark ZS351 Zero-M doesn't feature automatic power cord rewind system. Instead, power cord is manually wrapped around cord wrap hooks.

shark zs351 led lightsUnit also features LED headlights on the main cleaner head and on the handheld vacuum. LED lights help spot the dirt in both low-light and daylight conditions, speeding up the cleaning task.

During operation unit draws approximately 4.2 Amps (500 Watts) and it features good suction, despite motor being relatively weak, at least on the paper. Motor also feature thermal protection - if the air flow is decreased, thermal protection will shut off the main motor in order to protect it. If/when that happens, turn off the unit, unplug it from the wall, remove any clogs or blockages, empty the dirt bin, if needed wash/replace the filters, etc.

After some 30-40 minutes, thermal switch resets itself automatically, allowing the user to continue with the cleaning task. Of course, for exact procedures, check the manual that comes with the unit.

Note: Shark Rocket HV30* and HV32* vacuums have 500 W motors and Shark Rocket HV38* and HV39* vacuums feature 600 W motors. But, Shark ZS351 Zero-M also features main cleaner head of novel design, and somewhat weaker motor doesn't mean weaker cleaning performances.

Shark ZS351 Zero-M features fingertip controls - power switch has three settings:

- OFF: unit is turned off,

- Setting 'I': this is setting for vacuuming bare floors and area rugs. The brushroll spins slowly, helping the suction to pick up dirt and debris, but also protecting delicate floors and area rugs.

- Setting 'II': this is setting for vacuuming carpets. The brushroll spins faster in order to deeply clean carpets and pull out hair and other deeply embedded dirt.

As the ultra-light stick vacuum, ZS351 Zero-M weighs 9 pounds (~4.08 kg). Due to the swivel mechanism and lightweight design, it can easily maneuver around floor objects (walls, furniture, sofas etc) and clean hard to reach areas and spaces, including under the beds and sofas.

Physical dimensions are (H x W x D) 47.2 x 10.2 x 13.4 inches (~120 x 26 x 34 cm).

Dirt bin is transparent, allowing the user to see type and amount of vacuumed dirt. Dirt bin capacity is 0.4 dry quarts (~0.44 liters) and personally, it could be larger. However, dirt bin is emptied easily and quickly, without making a mess, through the bottom.

shark zs351 foam and felt filterAir filtration is good, but it is not true HEPA air filtration. Air filtration is based on cyclonic action, foam and felt pre-motor air filters and one post-motor mechanical air filter.

All filters are washable using water only - the use of soaps or detergents is forbidden.

After washing/rinsing, it is important to dry the filters thoroughly, since Shark ZS351 Zero-M is designed for dry dirt only.

Note: never put back wet/moist air filters and never use the vacuum with wet air filter, or without them at all. Generally, Shark ZS351 Zero-M is an easy to use vacuum, but just to be sure, read the manual thoroughly before the very first use.

When being stored, unit can be stored using onboard hook or directly on the wall mount. Personally, wall mount is generally preferred solution, especially when there is often the need to use the vacuum in emergencies - hint, pets and kids :)

Shark Rocket ZS351 Zero-M Cleaning Tools

Shark Rocket ZS351 Zero-M comes with three cleaning tools and attachments.

shark zs351 cleaning tools

These cleaning tools include:

- Zero-M Cleaner Head is designed for cleaning various types of floors, including bare floors, low-, medium-, high-pile carpets, area rugs, stairs and similar. It is very maneuverable and can easily slide under beds and sofas due to the low profile. Main cleaner head is transparent, allowing the user to see condition of the brushroll.

Zero-M technology actively removes pet and human hair, lint, fibers and similar debris from the brushroll. If the user spots hair on the brushroll, Carpet Cleaning Mode should be set, with few passes over tiles, low-pile carpet or some similar surface to help the unit remove the hair tangles.

If the hair and lint are still present, use scissors - Zero-M technology helps the user significantly with the maintenance, but from time to time user has to manually clean the brushroll.

Zero-M vs DuoClean Technology

DuoClean technology features two different brushrolls that work in unison to thoroughly clean the floors.

Their cleaning effect is IMHO better than cleaning effect of Zero-M single brushroll, but they are more maintenance demanding brushrolls, especially if there are pets with long(er) hair.

- Duster Crevice Tool is 2-in-1 cleaning tool. Dusting brush is used for picking fine dust, pollen and other dirt and allergens from elevated and sensitive surfaces, while Crevice tool is designed for cleaning narrow and tight areas and spaces like corners, edges, between cushions and similar.

shark zs351 pet multi tool- Pet Multi-Tool is another convertible cleaning tool, designed for cleaning tough pet messes in two ways.

First, a stiff bristle brush is used for cleaning stuck-on and other stubborn messes. When the bristles are removed, an upholstery tool is revealed which is used for removing pet hair from more sensitive surfaces.

Note: If required, other cleaning tools can be ordered later, just be sure to order cleaning tools and attachments for the exact model that you have.

Other cleaning tools include: 12" Crevice Tool, Dusting Brush, Pet/Upholstery Tool, Mini Motorized Brush, Under-Appliance Wand, Flexible Hose, Dust-Away Hard Floor Attachment with Microfiber Pad etc.

Shark Rocket ZS350, ZS351 and ZS352 Zero-M Vacuum Cleaners

Shark manufactures several very similar Shark Rocket Zero-M vacuums, some of them being labeled as ZS350, ZS351 and ZS352.

These models are actually the same units, differing in color, available cleaning tools and sometimes the store where they are being sold.

Shark Rocket ZS351 Zero-M vs SharkFlex HV391 DuoClean

sharkflex duoclean mShark Rocket ZS351 Zero-M and SharkFlex HV391 DuoClean are two very similar units - they are both ultra-light, stick, corded, convertible vacuum cleaners.

Physical dimensions are very similar - ZS351 dimensions are 47.2 x 10.2 x 13.4 inches (~120 x 26 x 34 cm) and HV391 are 49 x 10.125 x 9.375 inches (~124.5 x 25.7 x 23.8 cm).

ZS391 is somewhat lighter unit (9 vs 9.8 pounds), but it also comes slightly weaker motor (500 W vs 600 W). Both units feature 30 feet long power cord and 0.4 dry quarts transparent dirt bins.

ZS391 cleaning tools include Zero-M cleaner head, Duster Crevice Tool and Pet Multi-Tool.

HV391 comes with DuoClean cleaner head, Duster Crevice Tool, Pet Multi-Tool, MultiFLEX Under-Appliance Wand and Accessory Bag.

Note: cleaning tools and attachments can change over time.

Also, HV391 features so-called Flex technology - cleaning wand has a joint, allowing the wand to 'flex' (hence the name), making it much easier to clean under beds, sofas and similar objects.

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For more about SharkFlex HV391 DuoClean vacuum, check our SharkFLEX DuoClean HV390, HV391 and HV392 Corded Ultra-Light Upright Vacuums article.


shark zs351 rocket zero mLong Story Short: Shark Rocket ZS351 Zero-M is lightweight, convertible, corded vacuum cleaner. It features good suction, good air filtration, Zero-M main cleaner head and two versatile cleaning tools.

But personally, although there isn't much difference between 500 and 600 W motors and their suction, I would still prefer 600 W motor. Also, call me spoiled, but cleaning wand with Flex technology can be rather helpful.

Nonetheless, if you have pets that shed a lot, and you need lightweight, convertible vacuum with minimum maintenance costs that does its job, consider Shark ZS351 vacuum - it can help you clean whole home, not just floors.

For more reviews and recommendations, check Shark Rocket ZS351 Zero-M Amazon link (link opens in the new window).