1 / 7OUNEDA ZY3866G Air Purifier, H13 HEPA, 2300 sq ft
The OUNEDA ZY3866G air purifier is listed for rooms up to 2300 sq ft and combines a multi-function HEPA filter with PM2.5 monitoring and touch controls. Auto mode, sleep mode and a child lock offer flexible operation, while the large stated coverage area and limited independently substantiated performance data make room-size suitability worth checking carefully.
At a glance
- The listing claims coverage up to 2300 sq ft and air refreshment up to three times per hour.
- PM2.5 monitoring, auto mode and three fan speeds are described in the listing.
- Sleep mode is claimed to run at 22 dB and reduce display brightness.
- Aromatherapy pad, child lock and 2H/5H/8H timer are listed.
Reference price: £129.99
Price checked: 14 Nov 2026
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Pros and cons
Pros
- PM2.5 display and auto mode are intended to adjust fan operation to indoor air conditions.
- Child lock, switchable display and multiple timer options provide practical operating controls.
- Aromatherapy pad and a sleep mode are included among the listed features.
Cons
- The claimed room coverage is unusually important to verify against the intended room, as no CADR figure is supplied.
Technical specifications
14 specifications| Brand | OUNEDA |
|---|---|
| Model | ZY3866G |
| Colour | White |
| Filter type | Multi-function Hepa Filter |
|---|---|
| Claimed room area | 2300 Square Feet |
| Particle retention size | 0.3 Micron |
| Listed contaminants | Cigarette Smoke, Dust, Formaldehyde, Odors, Pet Dander, Pet Hair, Pollen |
| Control method | Touch |
|---|---|
| Special feature | Digital Display |
| Noise level | 22 Decibels |
| Power source | Corded Electric |
|---|---|
| Wattage | 24 watts |
| Dimensions | 16D x 31W x 40H centimetres |
|---|---|
| Weight | 6.79 Pounds |
What to know before buying
Listing details to confirm
Listing details are inconsistent: the title claims H13 HEPA, while the technical filter field says “Multi-function Hepa Filter”. Room coverage is stated as 2300 sq ft, but the claimed up-to-three air changes per hour has no accompanying CADR or room-height detail. The 22 dB noise figure is specifically attributed to sleep mode, not all settings. Check the selected listing and filter replacement compatibility before buying.
Who is it for?
A good fit for
- Buyers seeking an air purifier with a PM2.5 display, auto mode and touch controls.
- Homes with pets or concerns about dust, pollen, smoke and odours, based on the listed filtration targets.
- People who want a sleep mode, child lock, timer and aromatherapy pad.
Less suited to
- Buyers who need a substantiated CADR or independently verified room-coverage performance.
- Buyers who require confirmation that the supplied filter meets a specific H13 standard.

Customer reviews on Amazon
- 5 stars
75% 75% - 4 stars
17% 17% - 3 stars
8% 8% - 2 stars
0% 0% - 1 star
0% 0%
Customer feedback highlights perceived effectiveness, fresher-smelling rooms and improved air quality, including a report of help with cigarette smoke. Customers disagree about noise. For buyers considering the listed 22 dB sleep-mode claim, that mixed noise feedback makes listening expectations and chosen fan setting relevant. Feedback is limited and does not verify the stated room coverage or filtration specifications.
Positive themes
- Customers describe the purifier as effective and say rooms smell fresher and cleaner.
- Some customer feedback reports positive experiences with cigarette smoke and air quality.
Mixed feedback
- Customers disagree about the noise level.
Frequently asked questions
How large a room is this purifier claimed to cover?
The listing states 2300 Square Feet and says it can refresh air up to three times per hour. It does not provide a CADR figure or the room-height assumptions behind those claims.
Does it have an H13 HEPA filter?
The title claims H13 HEPA, but the technical details identify the filter as “Multi-function Hepa Filter”. Confirm the exact filter specification for the selected listing.
What controls and modes are listed?
The listing describes touch controls, auto mode, three fan speeds, a switchable display, a child lock and 2H/5H/8H timer settings. It also claims sleep mode.
What do customers report about it?
Customer feedback describes effective air cleaning and fresher-smelling rooms, while noise experiences differ. These reports are subjective and do not establish coverage or noise performance across every setting.

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