Oransi - TrueCarbon™ 150C Air Purifier

A few things. First, most air purifiers aren't very good at capturing pet hair, as it's very large and heavy in comparison to something like PM2.5. Therefore pet hair will fall and settle on surfaces unless very close to an air purifier. We recommend vacuuming and dusting instead. Secondly, you need an air purifier for each room or general area. They can't overcome walls or doors. Thirdly, your budget is quite low unfortunately. To tackle particulates (e.g., pet dander, soot, pollen, smoke particles, etc.) **and** gases/vapors/odors, you ideally need two types of air purifiers. This is because significant gases/vapors/odor concentrations require significant weights of sorbent media such as activated carbon, activated alumina, or synthetic zeolites. And most common consumer brands such as Levoit, Coway, Winix, Medify Air, Smart Air, Honeywell, etc. have very low weights of activated carbon. Heavyweight sorbent media purifiers are typically loud, very expensive, and clean more slowly than particulates-focused air purifiers. Example heavyweight sorbent media brands are AllerAir, Airpura, or Austin Air. Furthermore, one of the principal components of cat urine odor is ammonia. Ammonia is not well-adsorbed by plain or untreated activated carbon. You need modified (e.g., impregnated) activated carbon to increase removal efficiencies. The absolute cheapest gas/vapor/odor purifier is the [Oransi TrueCarbon 150C](https://oransi.com/products/truecarbon-150c-air-purifier), currently on sale for $271.87. It features 3.2 lbs. of potassium permanganate impregnated activated carbon, which should enhance ammonia and other odorous gases removal. Other possible odor-reducing strategies: switch to stainless steel litter boxes and consider a raw diet for your cats instead.

None of these are going to help with the litter box odors. They're all junk rebadged brands with very little activated carbon or other sorbents for gases/vapors/odors. The cheapest option is going to be the [Oransi TrueCarbon 150C](https://oransi.com/products/truecarbon-150c-air-purifier). It has 3.2 lbs. of potassium permanganate impregnated activated carbon. There's a 15% off discount pop-up on the product page if that helps. NB: I don't think the TrueCarbon has any sort of particulates filtration, so the grill and carbon filter may get clogged with dust. Might need to gently vacuum the carbon filter on a low setting.

The RabbitAir A3 is *terrible*. It has low particulate CADRs and the "Toxin Absorber"\* filter has too little sorbent media to be effective for higher or long-term concentrations of gases for the price. Seriously, it seems like a rip-off. Sorbent media is activated carbon, activated alumina, or synthetic zeolites. \*The name isn't even right - sorbent media like activated carbon works by the mechanism of *adsorption*, not absorption. If you have high levels of particulates **and** high levels of gases like VOCs, you need two types of air purifier. This is because heavyweight sorbent media purifiers have lower post-motor airflows and require the need for "dwell time" / "residence time" in comparison to particulates-focused air purifiers. To boot, heavyweight sorbent media purifiers tend to have little capacity for particulates removal, as the mechanical media filters have lower surface area. Unfortunately heavyweight sorbent media purifiers are expensive. And you may need to tailor the sorbent media to the gases present in your air by using a home test kit or paying for an environmental services contractor to conduct testing. This is because plain/untreated sorbent media does not have high removal efficiencies for all gaseous "species". Airpura and AllerAir make heavyweight sorbent media purifiers. The cheapest AllerAir units are around $560-$600. Airpura is more expensive. AllerAir offers over 40 custom blends of activated carbon for certain gases. Airpura has a few different activated carbons, such as potassium iodide impregnated AC or potassium permanganate AC. For the smallest rooms (the 10 x 10 and 12 x 14 ft. rooms specifically), you may be able to get away with an [Oransi TrueCarbon 150C](https://oransi.com/products/truecarbon-150c-air-purifier) for each. The TrueCarbon line uses 3.2 lbs. of potassium permanganate impregnated activated carbon. The DIY alternative is to build your own configuration via **AC Infinity** refillable carbon canisters, inline fans, and air filter boxes. However, you'd need to supply your own sorbent media; choices for modified sorbent media will be more limited. For separate particulates-focused air purifiers, I would be exceeding the [AHAM 2/3 rule](https://ahamverifide.org/ahams-air-filtration-standards/) (as mentioned in the AutoModerator comment). For instance, the 14 x 35 ft. room requires minimum CADRs of 327 CFM. But I would recommend CADRs anywhere from 350 CFM - 450 CFM. **Coway** brand purifiers are generally recommended first for their build quality. See the [particulates Buying Guide](https://docs.google.com/spreadsheets/d/16bOQoFE9rKYMlo1AR_cged3yRpxfmiey54U65UeBCR4/edit?gid=0#gid=0) for recommended Coway models, their CADRs, sound levels, and features.

Not gonna find anything. Activated carbon is required for odors and it just so happens to make purifiers expensive, the more they include of it. Cheapest AC unit I can think of is the Oransi TrueCarbon. All of their models use 3lbs of carbon however their cheapest model for the smallest room size is still 250 bucks.

You need carbon filtration for odours, not just HEPA (which only filter out particulates). You need pounds of activated carbon. The Oransi TrueCarbon springs to mind, but it's expensive ($600) and the carbon filter would need to be replaced every few months ($100 a pop).

Yeah you definitely want carbon. HEPA is not necessary in your case and not in almost any purifier. It's usually "good enough" but not as good as non hepa almost always. My vote would be on the starkvind purely from a cost to space standpoint as effectively it takes up "no" space. But if the smell is that bad you may want to consider something like the Oransi Truecarbon Of course if you can ventilate, blow the air away, remove/cover the flooring, or bake out the VOCs(or some combo of those) that's much preferred

We have a few models: Oransi mod+ for large spaces, Winix 5500 for a bedroom and Oransi TrueCarbon for smoke odor removal. Have tried some others and like these the best.

Oransi TrueCarbon is the answer. Whether it will actually work for your use case is another question. Also look into Austin Air, they have some cheaper units.

Nothing on your list is going to help with cigarette odor. Sorry. You need many pounds of carbon for that. You could try an Oransi TrueCarbon but you might need a carbon heavy unit and those start around $750.

Under $500 you have exactly one odor purifier and that’s the Oransi TrueCarbon. There are others with a little carbon but not enough to mitigate cooking or pet odors.

Maximum CADR. VOC mitigation. I'd recommend a Smart Air Blast in the largest size you can afford, and also an Oransi TrueCarbon. Do you have forced hot air or forced hot water for heat?

It has the most carbon you can get for under $750.