POMORON MJ002H Air Purifier Review: compact 4‑in‑1 unit that quietly cleans up a small room

I’ve been using the POMORON MJ002H air purifier for a few weeks in my bedroom and in my small home office, swapping it between the two. I bought it because I’ve got a cat, mild dust allergies, and I was tired of waking up with a stuffy nose. I wasn’t expecting miracles from a 3.5 lb unit, but I wanted to see if a mid-priced purifier with HEPA, UV, and an ionizer actually does anything noticeable in day‑to‑day use.

Right away, the main thing I noticed is that it’s small and very easy to live with. It takes up about as much space as a big Bluetooth speaker and plugs into a normal wall outlet. No app, no Wi‑Fi, just buttons on top. If you like simple, that’s good. If you want smart features, this is not it. The timer and fan speed buttons are straightforward enough that I didn’t have to open the manual for basic use.

In terms of air quality, I did see a difference, especially with pet dander and light smells. Litter box odor in the same room dropped after a couple of hours on a higher fan speed, and the general “closed room” smell was reduced. It’s not like stepping into a lab-clean environment, but the air feels less heavy and my nose doesn’t itch as much in the morning. For me, that’s already a win, even if it’s not perfect.

The flip side is that the 1250 ft² coverage number is very optimistic in real life. In my opinion, this is best for a bedroom, a small living room, or an office. If you buy it expecting it to handle a big open floor plan on its own, you’ll probably be disappointed. Overall, my first impression is: compact, quiet, does a decent job for a small space, with a few trade-offs I’ll get into below.

In terms of value, I’d put the POMORON MJ002H in the “good but not mind-blowing” category. You’re getting a compact purifier with a genuine H13 HEPA filter, activated carbon, UV, ionizer, low noise, and a decent coverage claim for a mid-range price. It’s not the cheapest little desktop purifier out there, but it also offers more features than the bare-bones models that only have a basic filter and one fan speed.

Where it earns its keep is in small to medium rooms. If you use it in a bedroom, office, or a small living room, and you’re dealing with dust, pet dander, and everyday smells, you’ll likely notice a real improvement. For that use case, the price feels fair. The energy consumption is low, so the main ongoing cost is filters. As long as replacement filters stay reasonably priced and you don’t have to change them every two months, the overall value stays solid.

On the downside, there are some things you don’t get: no app, no air quality sensor, no auto mode, no remote. If you’re the kind of person who likes to see PM2.5 numbers and let the machine adjust itself, you might be happier paying more for a smarter unit from brands like Levoit, Coway, or others. Also, the 1250 ft² claim is basically marketing; for real performance, think more like one normal room, not a whole floor.

So, is it worth buying? If you want a simple, quiet, small purifier that you can just turn on and forget in a bedroom or office, and you don’t care about smart features, then yes, it’s good value. If you want whole-apartment coverage, heavy smoke removal, or lots of tech features, you should probably look at something bigger and more expensive.

Design-wise, the MJ002H is very straightforward. The one I used is the black version, and it’s basically a matte black cylinder/rounded square tower about 6.3" x 6.3" at the base and almost 12" tall. It looks more like a speaker or a small desktop PC than a typical bulky purifier. If you’re short on space, that footprint is a big plus. I had it sitting on a nightstand and later on a small shelf in my office, and it didn’t feel in the way.

The air intake is around the sides, and the clean air blows out the top. That means you should keep some space around it; shoving it tight against a wall or behind a couch isn’t ideal. I found it works best when it’s at least a few inches away from other objects. The top control panel has simple icons with soft white LEDs. They’re bright enough to see but not blinding, though if you’re super sensitive to light at night, you’ll notice a faint glow in a dark bedroom.

Build quality is decent for the price. It’s all plastic, but it doesn’t feel flimsy. The outer shell doesn’t creak when you pick it up, and the filter compartment twists off cleanly without wrestling it. The unit is light, which is good for moving it, but it also means you can knock it over if you yank the cord or bump it hard. It didn’t feel cheap to me, just clearly built to hit a certain price point, not to feel premium.

From a practical standpoint, I like that the design is unobtrusive and neutral. It doesn’t scream “appliance,” and it’s easy to fit into most rooms. On the downside, there’s no handle, and the power cord could be a bit longer if you’re trying to place it in a specific corner. Overall, the design is simple, modern enough, and focused on being compact rather than fancy.

I haven’t had this purifier for a full year, so I can’t speak to multi-year durability, but I can talk about the build and the early signs. The housing feels solid enough for a plastic unit. I moved it around between rooms almost daily, grabbed it from the top, from the sides, bumped it a couple of times, and nothing cracked or loosened. The buttons still respond properly, and the fan noise hasn’t changed or developed any rattles.

The filter system is one combined cartridge (pre-filter + HEPA + carbon) that you access by twisting off the bottom. That mechanism feels secure but not stiff. I checked the filter after about 3 weeks of daily use in a place with a cat and a fair amount of dust. The outer layer already had a visible ring of dust, lint, and hair, which shows it’s catching stuff. I vacuumed the outer pre-filter layer gently to extend its life a bit, which is what I usually do with these multi-layer filters. Officially you’re supposed to replace the whole thing every few months, depending on usage and air quality.

One thing to keep in mind is long-term cost of filters. Since they push their own MJ002H-RF filters and warn that off-brand ones may not perform as well, you’re more or less tied to their replacements. If you run it many hours per day in a dusty environment, you’ll probably go through a few filters per year. That’s not unique to this brand, but it’s part of the total cost. The upside is that swapping filters is easy and doesn’t require tools.

So far, nothing gives me the impression it’s going to fall apart quickly, but it also doesn’t feel like a tank. I’d say the durability is reasonable for the price range: fine for regular home use, but I wouldn’t use it in a workshop or somewhere it might get knocked over constantly. As long as you treat it like a normal household appliance and keep up with filter changes, it should hold up.

Performance here is mostly about how loud it is, how flexible the settings are, and whether it’s annoying to live with. The MJ002H has 4 fan speeds, including a sleep mode. On the lowest setting, it’s genuinely quiet. I’d compare it to a soft laptop fan or a bit of white noise. I could sleep with it about 1–2 meters from my bed and it didn’t bother me. If anything, the constant hum helped drown out outside noise a bit.

On speed 2 and 3, you start hearing a clear airflow sound, but it’s still reasonable. I used those settings during the day while working and on video calls. The mic on my laptop didn’t pick it up much unless I was very close to the unit. The highest speed is obviously the loudest; I’d call it similar to a small desk fan on high. I mostly used that when I wanted to clear smells a bit faster or after vacuuming to catch whatever dust got kicked up. So from a noise point of view, it’s very manageable and definitely bedroom-friendly.

The timer (8/12/24 hours) is handy if you want to run it while you’re away or overnight without thinking about it. I liked setting it to 8 hours when going to bed so it didn’t just run 24/7 for no reason. There’s no auto mode with a particle sensor, so it won’t adjust speed based on air quality; you have to pick the speed yourself. That’s a limitation compared to some pricier models, but also one less thing to fiddle with.

Power usage is low (17W), so even if you run it many hours a day, it shouldn’t blow up your electricity bill. I didn’t notice any heat output worth mentioning; it stays cool to the touch. Over a few weeks, I didn’t run into any weird rattling noises or fan issues. Everything stayed consistent. In short, performance is stable, quiet, and predictable, as long as you’re okay manually choosing the fan speed instead of relying on smart sensors.

Out of the box, you get the purifier itself, one H13 HEPA filter already installed, a short manual, and that’s it. No remote, no extra filters, no weird accessories. The unit is pretty light at about 3.5 pounds and roughly 12 inches tall, so you can easily move it from room to room with one hand. It’s powered by a standard AC cord, and there’s no battery, so it’s meant to stay plugged in all the time.

The main features POMORON pushes are the 4‑in‑1 system: HEPA filter, activated carbon, UV light, and a negative ion generator (ionizer). In practice, that means the air goes through a 3‑layer H13 HEPA filter that claims 99.97% of particles down to 0.3 microns, then past a UV light for extra sanitizing, and meanwhile it can also spit out negative ions to help particles fall out of the air. There’s also a small essential oil tray, which is a nice bonus if you like a bit of scent in the room.

Controls are all on the top panel: power, fan speed (4 levels, including a sleep mode), timer (8/12/24 hours), UV, and ionizer. The buttons are touch-style but clearly marked. I didn’t have to fight with them; they respond fine. The sleep mode is advertised at 25 dB, which lines up with my experience: on the lowest setting, it’s basically a soft hum, quieter than my fridge. On the highest speed, you do hear it clearly, but it’s still far from a loud box fan.

One important thing: the brand pushes their own filters (MJ002H-RF), and you’re kind of locked into that if you want to keep the same performance. That’s pretty standard, but it’s worth mentioning because long-term cost depends a lot on how often you replace the filter and how much those OEM filters run. In short, what you get is a simple, button-only purifier with several cleaning layers, no smart features, and enough control for basic scheduling and noise management.

This is the part that matters: does it actually help with dust, pet hair, and smells? In my case, yes, to a noticeable but not magical level. I tested it in a roughly 150–180 ft² bedroom with a cat and in a similarly sized office where I sometimes burn candles and occasionally get light smoke from cooking drifting in. I ran it most of the day on speed 2 or 3 and used sleep mode at night.

For dust and pet dander, I saw a real difference after a few days. The surfaces in my bedroom didn’t get dusty as fast, and the usual layer on my black nightstand was clearly reduced. Also, my morning congestion was less intense. I still had some allergy symptoms (I’m not cured or anything), but my nose wasn’t as stuffy and my eyes weren’t as itchy. That suggests the HEPA filter is doing its job catching fine particles. The pre-filter part of the cartridge also collects visible pet hair and lint pretty quickly, which is both gross and satisfying when you check it.

On odors, it does pretty well for everyday smells (litter box, stale air, mild cooking odors that drift in) but it’s not a miracle worker for strong smoke. If I slightly burned something in the kitchen and left the purifier running in the nearby office with the door open, it took a while to clear the smell, and it didn’t fully remove it unless I also opened a window. For normal use, though—pet smells, sweat, general stuffiness—the activated carbon and maybe the ionizer seem to help. The room smells fresher after it’s been running for an hour or two.

The UV and ionizer are harder to judge directly. You don’t “feel” UV working, and the ionizer doesn’t have a dramatic immediate effect you can see. I mostly treat them as extra layers. I kept the ionizer on most of the time but turned it off when the room was fully closed and I was sitting right next to the unit, just out of caution because some people don’t like ionizers running constantly in small unventilated rooms. Overall, in real life, I’d rate the effectiveness as: strong for a small room at this price, but don’t expect industrial-level purification or instant smoke removal.