TrueCarbon™ 150C Air Purifier

You want to remove the bad odors. Try something with activated carbon. I have a couple air filters from Oransi, a mod and a trucarbon.. If you just want to laser in on smells I suggest the tru carbon https://oransi.com/products/truecarbon-150c-air-purifier?srsltid=AfmBOoq_nwtKvBV8T0Gy7ORJgWdgex5ANMJtGIgrNELojcEzxabtnNBV

Oransi True Carbon 150C is currently doing the job just fine. Small-ish room, 12x14. Definitely noticed a big difference in odors. Also have a window I can crack to help ventilate, but overnight when it drops into the 20s I prefer to keep that closed. Only running PLA, PETG and TPU right now.

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.

Levoit (last I was told by customer support) uses a Recommended Practice (RP) and not a HEPA *standard* as such. Their purifiers will still clean your air. If your primary concern is odors, you need pounds of sorbent media. Sorbent media are activated carbon, activated alumina, or synthetic zeolites. Depending on the gaseous species responsible for the odors, you may need modified sorbents. This could be the case with rabbits. An example is potassium permanganate (KMnO₄) impregnated activated carbon. HEPA is mechanical filtration for particulates like small dust particles, smoke particles, pollen, pet dander, mold spores, PM2.5, etc. It won't mitigate the spread of odorous gas molecules. Brands like Levoit, Winix, Coway, Medify Air, Smart Air, Honeywell, etc. have little sorbent media for gases/vapors/odors. Unfortunately heavyweight sorbent media purifiers are very loud, very expensive, and clean the air more slowly than particulates-focused units. The "cheap" option is the [Oransi TrueCarbon 150C](https://oransi.com/products/truecarbon-150c-air-purifier). It uses 3.2 lbs. of KMnO₄ impregnated activated carbon. Unfortunately it's full price at the moment and sometimes comes down to \~$279. There's also a pop-up for 15% off on the TrueCarbon 150C's product page.

To be fair, you *can* place one in the kitchen. But there are very annoying drawbacks if you have no or a seriously inadequate range hood (e.g., grease build-up and high humidity prematurely saturating the sorbent media). The good news is you already have a vented range hood, so the worst of those pollutants should exhaust outside. I think using the Oransi TrueCarbon in the kitchen should be okay. Run the range hood on the highest airflow setting for any kind of frying, searing, grilling, steaming, or open pot boiling.

Portable hood by the window for capture. HEPA + big carbon purifier running high during + a few hours after. If money is tight: consider a DIY Corsi–Rosenthal box (for particles) + a smaller carbon purifier or the hood for odors. If money is not as tight and smoke is frequent: consider a smoke-focused purifier with heavy carbon (Winix 5510, Levoit large-room, Oransi TrueCarbon, Austin Air, etc.).

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).

My husband has asthma and any generally reputable air purifier has helped with that. When it comes to smell, a charcoal air purifier is the answer. We use Oransi’s charcoal air purifier, which is a big initial investment but the filter only needs to be changed once a year so it breaks even with the cheaper purifiers that need filter replacements every month.

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.