SHARK ZU51 Navigator Vacuum Review

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Pet hair on carpets and furniture can make vacuuming feel like a daily chore, especially when long hair gets tangled around the brushroll. The Shark ZU51 Navigator Swivel Pro Pet Upright Vacuum aims to reduce that problem with a self-cleaning brushroll, swivel steering, and tools for cleaning above the floor. Its 0.87-quart dust cup and 11-foot total reach add convenience, but its corded design and regular filter maintenance may not suit everyone. This review explains its key features, everyday uses, limitations, and what you should check before buying the renewed version.

Shark ZU51 Key Specifications

The following specifications describe the Shark ZU51 model and the identified renewed listing. Some details, especially weight and included accessories, differ between published listings.

What Is the Shark ZU51 Navigator Vacuum?

The Shark Navigator Swivel Pro Pet ZU51 is an upright vacuum built for regular household floor cleaning, with added features that help in homes with shedding pets. Unlike a cordless stick vacuum, it operates from a wall outlet, so you do not need to recharge a battery between cleaning sessions.

Its main feature is the self-cleaning brushroll. The design helps move hair off the brushroll during vacuuming instead of letting it build up around the bristles. This reduces one common maintenance task, although hair and debris can still cause blockages.

The vacuum also has a removable handle and wand for above-floor work. You can use compatible attachments for furniture, stairs, corners, and other places the main floor nozzle cannot reach.

Review method: This assessment uses published ZU51 specifications and the owner’s guide rather than independent laboratory testing. You can consult the ZU51 owner’s guide and standard-model retail specifications for additional product details.

Key Features of the SHARK ZU51 Navigator Vacuum

Self-Cleaning Brushroll for Pet Hair

Long hair and pet fur can wrap around a vacuum’s rotating brush and reduce its cleaning efficiency. The ZU51 uses a self-cleaning brushroll designed to remove much of that hair during normal operation.

This is especially useful when you clean rugs, carpets, and floors where pets shed. You may spend less time cutting or pulling hair away from the brushroll.

However, the system is not a guarantee against every tangle. The owner’s guide explains that remaining hair may move into the dust cup with continued cleaning. You should check the nozzle if hair remains trapped or the sound changes.

Carpet and Hard Floor Settings

The ZU51 has two operating settings for different surfaces:

• Setting I, Hard Floor: Intended for bare floors and area rugs. The brushroll rotates at a slower speed.
• Setting II, Carpet: Runs the brushroll faster to help collect debris from carpet fibers.

You can also adjust suction using the slider on the handle. Moving it toward MIN reduces suction and may make the nozzle easier to move on certain carpets. Moving it toward MAX increases suction for cleaning tasks that need more pull.

These adjustments give you more control than a vacuum with only one fixed floor-cleaning setting. Still, check your flooring manufacturer’s cleaning instructions before using a rotating brushroll on delicate surfaces.

Swivel Steering and Maneuverability

Swivel steering helps the floor nozzle change direction as you move around chair legs, tables, and other furniture. This can reduce the need to lift or reposition the vacuum repeatedly.

The 12-inch cleaning path listed for the standard ZU51 provides a useful balance between floor coverage and movement around furniture.

Keep in mind that the full upright body still needs storage space. Swivel steering also does not make a full-size upright as compact as a handheld or small stick vacuum.

HEPA Filtration and Dust Control

The standard ZU51 includes a HEPA filter, pre-motor filters, and Shark’s Anti-Allergen Complete Seal design. This arrangement is intended to help contain dust within the vacuum’s filtration system.

That can be useful when you frequently collect household dust, fur, and debris. However, filtration performance depends on using the correct filters, keeping them clean, and ensuring they are installed properly.

Since the linked Amazon product is renewed, check that all filter parts are included and in suitable condition before use. A missing, damaged, or poorly fitted filter can affect the vacuum’s operation.

11-Foot Reach and Cleaning Attachments

The ZU51 is designed to provide up to 11 feet of total above-floor reach using its hose and wand arrangement. This figure describes the overall reach, not an 11-foot standalone hose.

The standard model is listed with crevice and upholstery tools. A crevice tool is useful for narrow gaps, while an upholstery tool helps clean fabric furniture and stairs.

Accessories can vary by package and seller. For the renewed version, check the actual included-tool list instead of assuming every standard retail accessory will be supplied.

Who Should Buy It?

How It Performs in Real Use

The ZU51’s design supports several common cleaning jobs. The scenarios below explain how its features apply to daily use, rather than claiming results from hands-on performance tests.

Cleaning Pet Hair on Carpet

Carpets can hold loose fur and small debris between their fibers. The ZU51’s Carpet setting runs the brushroll faster, helping it work through carpeted areas while suction collects loosened material.

The self-cleaning brushroll is the main reason to consider this model for a pet household. It can reduce hair wrap, although cleaning effectiveness still depends on carpet type, debris, filter condition, and how you use the vacuum.

Cleaning Hard Floors and Area Rugs

For tile, sealed hard flooring, and suitable rugs, you can select the Hard Floor setting. The brushroll turns more slowly in this mode.

Use the suction slider to adjust how the nozzle moves. Start with an appropriate setting, and check for scratching or unwanted rug movement before cleaning a large area.

This control is useful when you move between rooms with different floor surfaces.

Cleaning Sofas, Stairs, and Upholstery

Pet hair often collects on sofas, cushions, and fabric-covered stairs. You can detach the ZU51 handle or wand and connect a suitable upholstery attachment for these jobs.

The removable wand may help with places that are harder to reach using the main nozzle. However, the ZU51 is still an upright vacuum, not a detachable Lift-Away canister model.

When cleaning stairs, keep the main vacuum on a stable surface. Do not balance it on a step where it could tip over.

Baseboards, Corners, and Car Interiors

A crevice tool can help collect dust along baseboards, between furniture, and in narrow gaps. These are places where the wide floor nozzle may not fit.

You can also use the hose and compatible tools to clean dry areas inside a car, provided you have a safe power source within reach.

The main limitation is its corded design. A compact handheld vacuum may be more convenient for frequent vehicle cleaning or places far from an outlet.

Setup Tips for Better Cleaning Results

A few simple checks can help you get the most from your ZU51.

1. Check assembly: Make sure the wand, handle, hose, and other parts click securely into place as shown in the owner’s guide.
2. Select the correct surface: Use Hard Floor for suitable bare floors and area rugs, or Carpet for carpeted surfaces.
3. Adjust suction: Move the handle slider as needed to balance pickup and nozzle movement.
4. Choose the right tool: Use the floor nozzle for large areas, the crevice tool for gaps, and a suitable upholstery tool for fabric surfaces.
5. Keep the dust cup clear: Empty it after use and whenever debris reaches the MAX fill line.
6. Check for blockages: If pickup drops or the vacuum makes an unusual sound, switch it off, unplug it, and inspect the airflow path.

Cleaning and Maintenance

The self-cleaning brushroll reduces one maintenance concern, but the ZU51 still needs routine care. Dust, lint, and blocked filters can reduce airflow and cleaning performance.

Emptying the Dust Cup

The 0.87-quart dust cup holds collected dirt and pet hair without using disposable vacuum bags. Shark recommends emptying the cup after each cleaning session and whenever debris reaches the MAX line.

Always unplug the vacuum before removing the cup. Empty it into a trash container, then make sure it locks back into place.

Cleaning the Filters

The ZU51 owner’s guide provides the following filter-care schedule:

• Pre-motor foam and felt filters: Rinse about once per month, following the manual.
• HEPA filter: Rinse about once per year, following the manual.
• Drying: Allow washed filters to air-dry completely for at least 24 hours before reinstalling them.

Use cold water only when rinsing filters. Do not use soap or cleaning chemicals. Check the manufacturer’s guidance for replacement intervals and the correct filter parts for your unit.

Never run the vacuum with missing or damp filters.

Brushroll and Blockage Checks

The brushroll is designed to remove hair wrap automatically, but it is still worth checking when performance changes. If hair remains, the owner’s guide suggests allowing additional cleaning time for the mechanism to work.

If the brushroll is jammed, unplug the vacuum before inspecting the nozzle. Remove trapped debris only as instructed in the owner’s guide.

Also check the hose, wand, and dust cup airflow openings if suction becomes weak. Clearing a blockage may restore normal airflow without requiring a replacement part.

Safety, Filters, and Surface Care

The Shark ZU51 is intended for dry household cleaning. It should not be used to vacuum liquids, hot ash, burning objects, sharp debris, or flammable materials.

Keep the power cord away from the rotating brushroll and inspect it for damage before use. Unplug the vacuum before maintenance, and keep children and pets away from the moving nozzle while it operates.

On stairs, position the main unit securely so it cannot fall. Check delicate flooring and rugs before using a rotating brushroll, and follow the flooring manufacturer’s recommendations.

The HEPA filtration system is a useful feature, but it should not be treated as a substitute for broader dust-control measures or as a guaranteed solution to allergies. Proper filter installation and cleaning remain necessary.

Customer Ratings and Feedback

The original article reported an average customer rating of 4.4 out of 5 stars for the Shark ZU51. A published product catalog record also showed that figure, but it should be treated as a historical snapshot rather than the current Amazon rating.

Features such as swivel steering, above-floor reach, and the self-cleaning brushroll are useful points to examine when reading buyer feedback. They matter because they can affect daily handling and maintenance.

For a renewed vacuum, focus on recent reviews of the specific offer. Look for comments about the condition of the brushroll, filters, hose, power cord, dust cup, and included tools.

Also check whether buyers report missing accessories or problems with the seller’s return process. Those issues may matter as much as the vacuum’s original feature list.

Pros and Cons

Is It Worth the Price?

The Shark ZU51 offers a practical set of features for a corded upright vacuum. Its self-cleaning brushroll, HEPA filtration, adjustable floor settings, and above-floor tools make it worth considering if you regularly clean pet hair and household dust.

It has the features of a capable mid-range household upright, but the value of the linked renewed offer depends on its actual selling price and condition. A renewed unit makes more sense when it offers a meaningful saving over a comparable new vacuum and includes suitable buyer protections.

Before deciding, compare the current cost with new upright vacuums that offer similar features. If the savings are small, a new model with clearer warranty coverage may be a better fit.

How It Compares to Alternatives

The Shark Navigator Lift-Away NV352 is an alternative worth comparing if you prefer a detachable canister for above-floor cleaning. The ZU51 instead emphasizes its self-cleaning brushroll and pet-focused upright design. The detachable canister is a key functional difference between these two Shark models.

The BISSELL CleanView Swivel Pet 2252 is another corded upright option aimed at pet-related cleaning. Compare its current price, brushroll maintenance needs, filtration, weight, and included tools with the ZU51. For a renewed ZU51, remember to compare actual condition and coverage rather than specifications alone.

Frequently Asked Questions

The Bottom Line

The Shark ZU51 Navigator Swivel Pro Pet Upright Vacuum is worth considering if you want a corded vacuum with a self-cleaning brushroll, adjustable floor settings, and useful above-floor reach. It is less suitable if you need cordless portability or want to avoid the extra checks that come with buying renewed. For the right household, it offers practical pet-hair cleaning features, provided you maintain its filters and confirm the condition of the unit you receive.