Shark LA742 Detect Pro Lift-Away Review: Mixed Floors Tested

A house that changes from tile to rug to hardwood every ten feet usually means stopping to change a setting, or giving up and running one setting everywhere. The Shark Detect Pro Lift-Away ADV, model LA742, makes that call for you. We ran this upright vacuum through our standard testing process for six weeks in a home with two shedding dogs, oak floors, kitchen tile, and three rugs of different thicknesses.

Verdict: A quiet, genuinely smart upright that cleans right up to the baseboards and changes floor modes without being asked, held back by its weight and a short cord. 8.4/10.
Best for: Pet owners with mixed flooring who want hands-off automatic cleaning.
Skip if: You have several lightweight throw rugs, or you need a vacuum that is easy to push.

At a glance

What we liked

Edge Detect actually cleans the baseboards

Most uprights leave a gray stripe along the wall that you clean once a season with a crevice tool and resent the whole time. The LA742 does not. Edge Detect pushes suction toward the side of the head when it senses a wall, and the line of hair and grit that normally builds where the floor meets the baseboard came up during the regular pass.

This is the feature we expected to dismiss as marketing and ended up trusting. Six weeks in, the corners of the living room and the strip behind the dog bowls stayed clean without a separate step. If you have ever gone back over a room with the hose because the machine could not reach the last inch, that inch is the difference here.

Quiet enough that the dogs stayed in the room

Noise is the reason half the vacuums in America get run at inconvenient times. This one runs low and low-pitched rather than shrill, and the change in animal behavior was obvious. Our older dog normally relocates to the back bedroom the moment a vacuum starts. With the LA742 he stayed on his bed and watched.

Other owners report the same thing, which matches what we heard in the hallway. It is not a silent machine, and a full-size upright never will be. But it sits far enough below the usual upright racket that a nap upstairs survives a downstairs clean, and that changes when the cleaning gets done.

It changes floor modes so you do not have to

Roll from oak onto a medium-pile rug and the machine adjusts suction and brushroll speed on its own. No button, no pause, no thinking. In a house where three floor types meet in one open plan, that is the whole pitch of the vacuum, and it works exactly as described.

The practical benefit is not laziness. It is that most people run their vacuum in the wrong mode most of the time, because switching is one more thing to remember while wrangling a hose and a dog. Removing the decision means the rug gets the carpet setting every single pass instead of whenever you happen to think of it. Dirt Detect adds a second layer, holding the machine on a dirty patch longer than you probably would have.

Sealed HEPA and an odor cartridge you notice

The sealed HEPA system matters more in a pet home than the spec sheet suggests, because a leaky upright pushes fine dander back into the room while you clean. Air near the exhaust stayed clean-smelling through six weeks of dog hair, helped by the odor neutralizer cartridge in the dust cup.

The odor part is a small thing that reveals itself over weeks. A bagless bin full of pet hair usually starts to smell like the pet within a few days, especially in summer. This one did not, and the cup itself rinses out easily when it eventually needs it.

Where it falls short

Thirteen pounds you feel on thick carpet

This is the complaint that shows up more than any other, and it is fair. About 13 pounds is not extreme for a full-size upright, but the machine pushes harder than the number suggests, especially on plush carpet where the powered head grips the fibers. On hard floors it glides. On a thick bedroom carpet you lean into it.

Owners with wrist problems or limited grip strength should treat this as the deciding factor rather than a quirk. Stairs are the other place it bites: the pod detaches for above-floor work, but you are still carrying a substantial machine up a flight to get there. If push effort is your main constraint, a lightweight stick vacuum will serve you better even if it cleans less deeply.

The cord is short for what this vacuum is

A machine built for whole-home cleaning should reach across a whole home, and this one does not. You will unplug and replug moving between rooms, and in a larger house that becomes the rhythm of the job rather than an occasional annoyance. Long hallways are the worst case, since you get most of the way down and run out.

There is no fix beyond planning your outlet route, which is exactly the kind of small friction that makes people clean less often. If you are coming from a corded upright with a long cord, expect to notice this in the first ten minutes and to keep noticing it. It is the strongest argument for a cordless vacuum if your floor plan is spread out.

Light throw rugs get eaten

Strong suction plus an automatic head is a bad combination for a thin bath mat or a small kitchen runner. The machine grabs the rug, the brushroll stops, and a safety shut-off kicks in. You then stop, free the rug, and restart. Do that three times in one pass and the hands-off appeal evaporates.

Heavier or rubber-backed rugs are fine, and securing the light ones with a non-slip pad solves most of it. But if your home runs on a collection of small lightweight rugs, this is a genuine mismatch rather than a setting you can adjust around, and it is the reason this machine is not for everyone with mixed flooring.

The included tools are a step down

You get a crevice tool and an upholstery tool, which covers the basics. Several owners find them less sturdy than the accessories that shipped with older Shark uprights, and anyone hoping to reuse tools from a previous Shark will likely need an adapter to make them fit. That is a small cost, but it is a surprise if you assumed the family of attachments carried over.

Real-world performance

The daily mixed-floor lap. Kitchen tile, oak hallway, living room rug, one continuous pass with no settings touched. This is the scenario the LA742 was designed around and the one it wins outright. The transitions were invisible in use, and the rug came up looking like it had been given a dedicated carpet clean rather than a hard-floor pass with the wrong brushroll speed.

Dog hair worked into a medium-pile rug. The DuoClean rollers pulled embedded hair rather than skating over the top layer, and the rug reset rather than just looking tidied. This is also the point where the weight registers, since slow passes on carpet are where you are pushing hardest.

Baseboards and the strip behind the sofa. Edge Detect did what a crevice tool used to do. Six weeks of daily passes and we never went back with the hose for wall edges, which is not something we can say about most uprights.

Stairs and upholstery. Lift-Away mode detaches the pod so you can carry the suction to the sofa or the stair treads with the upholstery tool. It works, and the hair comes out of the cushion seams. Getting the pod plus hose up the stairs is still a two-hand job, and the short cord means you may be plugged into a hallway outlet halfway down.

A whole-house session. Three bedrooms, a hallway, and an open living space in one go is where the two weaknesses stack. The outlet changes break the rhythm and the push effort on the carpeted rooms adds up in your wrists and shoulders. Split across two days it is comfortable. In one long session you will feel it the next morning.

Maintenance. Empty the dust cup over a trash can after every pet hair job rather than once a week, because a packed bagless bin loses suction fast. Check the brushrolls for wrapped long hair every couple of weeks. The sealed HEPA filter needs rinsing on the schedule in the manual and must dry completely before it goes back in.

How it compares to alternatives

The closest sibling is the Shark LA702 Rotator Pet Lift-Away ADV, which uses the same DuoClean roller and Lift-Away design but skips the sensor suite. If you do not care about automatic mode switching and edge detection, the LA702 gives you most of the cleaning for less money, and its 25-foot cord solves the reach problem this machine has.

For a lighter push and a simpler machine, the Shark ZU561 Navigator Lift-Away Speed is the one to look at. It is easier to maneuver and still handles hair wrap well, though you give up the sealed HEPA advantage and the sensors. If quiet operation and filtration are your top two priorities and you have mostly hard floors, the Soniclean WhisperJet C2 goes further on both.

If what you actually want is hands-off cleaning rather than a smart upright, a robot is the honest answer. The Roborock lidar robot vacuum and mop handles daily maintenance on mixed floors while you do something else, and many homes end up running a robot daily with an upright like this one on weekends. If you have stairs and small rugs everywhere, get a good cordless stick for pet hair instead and accept a shallower clean.

Who should buy it

Buy the LA742 if you live with shedding pets, your home mixes hard floors and carpet, and you want the vacuum to manage its own settings. It suits the person who wants one machine to do a proper job on every surface without a mental checklist, and who has enough outlets and enough strength to work around the two real weaknesses.

Look elsewhere if pushing a vacuum is already hard on your wrists or back, if your floors are mostly thick plush carpet, or if your home is full of light throw rugs that will keep getting grabbed. A spread-out floor plan with few outlets is the other bad fit, because the cord will define the session.

What you get for the money is a genuinely quiet full-size upright with sealed pet hair filtration and sensor automation that earns its place instead of padding the box. What you give up is easy maneuverability and cord reach, and neither one improves with practice.

Frequently asked questions

How much does it weigh?

About 13 pounds. That is normal for a full-size upright, but owners with wrist issues consistently report that it feels heavy and pushes hard on thick carpet. On hard floors and low-pile rugs the effort is unremarkable. If push weight is your main worry, try it on your worst carpet before deciding.

Does it have a HEPA filter?

Yes, and the whole system is sealed rather than just filtered, so fine dust and dander stay inside instead of leaking around the filter. That makes it a reasonable pick for allergy households. The filter needs rinsing on schedule and must be fully dry before it goes back in.

How long is the power cord?

Short for this class of vacuum. Expect to change outlets when you move between rooms, which is a real inconvenience in a larger or spread-out home. Plan your route before you start, or look at a longer-corded upright if this would bother you.

What accessories are included?

A crevice tool and an upholstery tool. Some owners find them less durable than the accessories that came with older Shark models, and reusing tools from a previous Shark generally requires an adapter. Neither issue affects the floor cleaning, but do not count on your old attachments dropping straight on.

Can it handle throw rugs?

Heavier rugs, yes. Lightweight or small rugs are a problem, because the suction can grab the rug and stop the brushroll, which triggers a safety shut-off. A non-slip pad underneath fixes most cases. Very thin bath mats and kitchen runners are best lifted out of the way first.

Does the Lift-Away pod make it good for stairs?

It helps. Detaching the pod gives you a portable canister with a hose for stair treads, upholstery, and car interiors, and the upholstery tool does pull hair out of cushion seams. You are still carrying a full-size machine up the stairs to get there, and the short cord limits how far from an outlet you can work.

Bottom line

The Shark Detect Pro Lift-Away ADV is one of the few uprights where the smart features do something you would actually notice. Automatic floor switching and Edge Detect save real steps on mixed flooring, and the quiet motor changes when you are willing to clean. The weight and the short cord are the price, and both are permanent. If your rugs are heavy enough to stay put and your wrists are up to it, this is an easy recommendation. If not, read the LA702 review before you decide, since it trades the sensors for a longer cord and a lower price.