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Cobectal
Cobectal Air Purifier with H14 True HEPA Filter

Cobectal Air Purifier with H14 True HEPA Filter

4.5(8 ratings)

Best price now

$29.99at WalmartChecked 2 h ago

25% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $29.99 at Walmart (checked Nov 11, 2026).
  • Checked at 3 stores.

Our take on the Cobectal Air Purifier with H14 True HEPA Filter

The Cobectal 4000C is a small room air purifier built around an H14 True HEPA filter, the highest HEPA grade, which traps fine particles including smoke, dust and pet dander. It runs at three fan speeds with 2, 4 and 8 hour timers, a child lock, a switchable night light and an aromatherapy tray on top. Sleep mode is rated down to 24 dB, quiet enough for a bedroom. It suits bedrooms, nurseries, offices and small living spaces; against larger rivals it trades room coverage and smart features for simplicity and quiet operation.

Best forBedrooms and nurseries where noise mattersPet owners and allergy sufferers in small roomsPeople who want a simple purifier without app setupOffices, classrooms and RVs
Pros
  • H14 True HEPA filter captures very fine particles
  • Sleep mode rated as low as 24 dB
  • Child lock stops kids and pets changing settings
  • 2/4/8 hour timer and three fan speeds
  • Aromatherapy tray adds scent to the airflow
  • Switchable night light can be turned fully off
Cons
  • No stated clean air delivery rate or room size rating
  • No air quality sensor or auto mode
  • No app or smart home control
  • Filter replacement schedule and cost not documented
  • Small unit, so coverage is limited to one room

Cobectal Air Purifier with H14 True HEPA Filter prices at every store

  • WalmartNew

    In stockSold by Cobectal

    $29.99Checked 2 h ago
    Visit Walmart
  • CobectalNew

    In stock

    $40.20Checked 2 h ago
    Visit Cobectal
  • eBayNew

    In stockSold by dinkopav_23

    $53.34Checked 2 h ago
    Visit eBay

Store links may earn us a commission.

Cobectal Air Purifier with H14 True HEPA Filter price history

Lowest price we've seen: $29.99 on Nov 11 at Walmart. Tracked across 3 stores since Nov 11.

From Cobectal

  • Upgraded high-density plastic shell with 40% stronger impact resistance than conventional models
  • Quiet sleep mode with noise as low as 24 decibels
  • Night light with free switching, or turn it off with one click
  • 3 adjustable fan speeds and 3 timer settings (2H/4H/8H)
  • Child lock to prevent accidental shutdown by children or pets
  • Aromatherapy design: drip essential oil from the top to diffuse with the purifying airflow
Shipping
Free shipping over a minimum spend; shipping calculated at checkout.
In the box
Power adapter (Input: AC100-240V~50/60Hz, Output: DC12V-1.0A)

About the Cobectal Air Purifier with H14 True HEPA Filter

It has an upgraded high-density plastic shell with 40% stronger impact resistance than conventional models. The shell keeps operation quiet and stable at maximum airflow.

In sleep mode, noise is as low as 24 decibels. A night light can be set to a soft glow or switched off with one click. The purifier has 3 adjustable fan speeds and 3 timer settings (2H, 4H and 8H). A child lock locks the control panel to prevent accidental shutdown by children or pets.

For aromatherapy, drip essential oil into the top of the unit. The oil diffuses with the purifying airflow. The purifier is intended for kitchens, living rooms, bedrooms, offices, classrooms, nurseries and RVs.

Fan speeds
3 adjustable speeds
Timer
2H, 4H or 8H
Sleep mode noise
As low as 24 dB
Night light
Soft glow, can be switched off
Safety
Child lock for the control panel
Aromatherapy
Essential oil added from the top
Shell
High-density plastic
In the box
Power adapter (input AC100-240V~50/60Hz, output DC12V-1.0A)

Questions and answers

What does the H14 filter grade mean?
H14 is the top HEPA class under EN 1822, filtering at least 99.995% of particles at the most penetrating size. In practice it removes fine dust, pollen, smoke and most pet dander that reaches the filter.
How big a room can it clean?
Cobectal does not publish a clean air delivery rate or a room size rating, so there is no verified coverage figure. Treat it as a single-room unit for a bedroom, office or nursery rather than an open-plan space.
How loud is it at night?
Sleep mode is rated as low as 24 dB, about the level of a soft whisper. Higher fan speeds will be noticeably louder.
Does it work with an app or smart assistant?
No. Controls are on the unit itself: fan speed, timer, child lock and night light. There is no app, Wi-Fi or voice assistant support.
What comes in the box?
The purifier and a power adapter with a 12V 1A output, rated for 100 to 240V input. Filters are sold separately.
How often do I change the filter?
Cobectal does not state a replacement interval. Most HEPA purifiers in this class need a new filter every six to twelve months, sooner in smoky or pet-heavy homes.
Where is the Cobectal Air Purifier with H14 True HEPA Filter cheapest?
At Walmart, for $29.99, 25% under what the other stores charge, as of our latest check.
What do buyers say about the Cobectal Air Purifier with H14 True HEPA Filter?
Rated 4.5 out of 5 from 8 ratings.
Where can I buy the Cobectal Air Purifier with H14 True HEPA Filter?
3 stores we checked sell it, including Walmart, Cobectal, eBay.

Stores we've priced the Cobectal Air Purifier with H14 True HEPA Filter at

  • Cobectal deals and prices
  • Walmart deals and prices

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