Long battery life
Easy to use
Weaker than Dyson
LG designed its A9 Kompressor with lots of neat features, including an internal scraper to get clumps of dust out and a stand so you don’t need to drill holes in your walls to hang the unit.
As impressed as we are with its performance, we should note that the A9 Kompressor is extremely expensive. In this case, you’re definitely getting what you pay for.
After all our testing, LG’s A9 Kompressor is one of the best cordless vacuum cleaners on the market.
About the LG CordZero A9 Kompressor
- Dimensions: 10.2" x 44.1" x 10.6" (W x H x D)
- Weight: 6 pounds
- Accessories: Combination tool, crevice tool, telescopic wand, power punch nozzle, universal power nozzle, extra filter, extra battery, portable stand
- Warranty: One-year warranty on the unit and 10-year warranty on the motor
What we like
The A9 Kompressor offers lots of battery life
Battery life is the greatest limiting factor of any cordless device. The A9 Kompressor comes with two 25.2-volt batteries.
For context, most cordless vacuums give you about 10 minutes on high and 20 minutes on low. However, we found that with the power brush head attached and set to Turbo, each battery gives you about eight minutes of cleaning. On the lowest setting, you get about 42 minutes of battery life. Since the CordZero comes with two batteries, all its stats are twice as nice, meaning it cleans for longer than most of its competition.
These results impressed us. Imagine cleaning your house. If you spend 30 minutes cleaning your carpets and another 10 on spills and dust bunnies, then the A9 Kompressor will never run out of power on you.
It comes with a stand of its own
You may have seen ads for cordless vacuums that hang and charge on docks you drill into the wall. This method is convenient if you have a utility closet, but not everyone does, or wants to drill into their wall for that matter.
If you want the option to change where you charge your cordless vacuum or just don’t want to explain to your landlord why you’re drilling holes in the walls, LG has a solution.
The A9 Kompressor comes with an easy-to-assemble stand that lets you charge and store attachments. The whole thing tips the scales at around five pounds, so it’s fairly easy to move.
The Kompressor compresses dust and dirt
Two major complaints we hear about cordless vacuums are that 1) they fill up too fast, and 2) they spill dirt everywhere when you empty them.
The A9 Kompressor features a lever that you press down, which in turn presses down on the dirt and dust inside to compress it into a more solid block. We also found that it helps ensure that clumps of dust don’t get stuck inside the bin.
What we don’t like
It's really expensive
At the time of reviewing, LG’s A9 Kompressor costs $700. Considering that there are more expensive cordless vacuums on the market that don’t perform as well, and this one outperformed all the others we’ve tested in the past, you can consider a purchase of the A9 Kompressor a solid investment.
After putting this vacuum through its paces in our lab, we think it can be your one and only carpet and upholstery cleaner. With that said, if you like having both a full-sized and a cordless vacuum at home, then we feel you won’t get your money’s worth of use out of the A9 Kompressor.
Dyson still has the edge
Our cleaning tests use sand, pet hair, and uncooked macaroni. The CordZero picked up 90% of all the detritus we laid out in a single pass. To put that in perspective, the average cordless we tested picks up around 52%.
However, as great as the A9 Kompressor’s performance numbers are, they aren’t enough to bump Dyson’s V11 performance—picking up 95% of the testing detritus—down to second place.
What users are saying
We’ve caught the LG’s A9 Kompressor pretty early in its lifecycle. At Best Buy, users give it a 4.6 out of 5 stars. People really like that the CordZero is light to hold and yet very powerful when it comes to cleaning.
Detractors think the A9 Kompressor is overengineered and overpriced.
Should you buy the LG CordZero A927KGMS Kompressor?
Yes! If you’re tired of cheap cordless vacuums that never get the job done, the A9 Kompressor is powerful, versatile, and easy to use.
Its long battery life ensures that you can finish cleaning without having to wait, and its included stand allows you to store it wherever you want.
While Dyson still makes more powerful cordless cleaners, the CordZero is lighter and easier to use. When it comes to perusing the best cordless vacuums, you need to understand your priorities and see what works for your lifestyle. There’s always going to be a series of trade-offs.
Meet the tester
Senior Manager of Lab Operations@ReviewedHome
Jonathan Chan currently serves as the Lab Manager at Reviewed. If you clean with it, it's likely that Jon oversees its testing. Since joining the Reviewed in 2012, Jon has helped launch the company's efforts in reviewing laptops, vacuums, and outdoor gear. He thinks he's a pretty big deal. In the pursuit of data, he's plunged his hands into freezing cold water, consented to be literally dragged through the mud, and watched paint dry. Jon demands you have a nice day.
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