It turns out it has a fake UL certification. I'm going to get a proper replacement tomorrow. Now I'm wondering if it actually measures CO level or if it's just a gimmick device.

I have an indoor outdoor weather station on the right, an AQI monitor in the middle and a CO2 monitor on the left and none of them agree on anything. Both the air quality monitors have been put outside with little change to readings. I tested and got a response to all the AQI readings, very quick response actually so I thought it was pretty good until I added the CO2 which wildly disagrees.

I have mast cell activation syndrome. And, I'm wanting to create a clean room in my bedroom to protect against both wildfire pollution (Great Lakes region, USA) and pollution from a neighbor's near daily trash pile fire that is entering my home through deteriorated ductwork. My plan was to build/buy a VOC scrubber and seal off the front and back doors to the room (two of the three main penetration points). Then, I would redirect the air flow from the ceiling vent (the other penetration point) toward the VOC scrubber.

I ordered an 8 inch inline fan and an 8 inch activated carbon canister from AC Infinity. I was planning to build my own filter box to fit between them.

But, as I wait for my parts, I've grown concerned that a scrubber can't clean the air quickly enough to compensate for the fact that pollution is actively flowing in? Am I wasting my time and money with this idea?

P.S. For the record, I'm working with a contractor to get the ductwork replaced, and I'm in a legal battle with my neighbor. This is not meant to be a permanent solution, but I need a safe place to live right now.

Does anyone have a good parts list for a basic small Mini Coris Rosenthal Box? This is for a small room so I was thinking just a small fan taped up with a small sized Merv 13 filters. Thanks in advance if you know where to find a good parts list for this <3

I have been looking for an air quality sensor that can differentiate micrometre-sized water particles and other particles. Any suggestions? Thanks!

I’ve recently started seeing frequent gaps in the history graphs on my Air Monitor Lite. The gaps appear across every sensor type — CO₂, PM2.5, humidity, temperature, etc.

It didn’t do this when I first got it a few weeks ago, but I’ve been noticing it recently. The monitor stays powered on and connected.

Is this normal, or is anyone else seeing the same thing?

How are people surviving this pollution?
What do you guys do during the peak pollution season?
Is it worth settling in Ghaziabad or Delhi?

I live in Oregon and the smoke has been very thick for over a month.

Hello first post. Thank you for any input on the below.

Built a basement music studio in an older 80s house. Radon abatement system in place, dehumidifier run 24/7 for 40-55 humidity. Basement has windows not usually open. Studio has a lot of rock-wool, fiberglass, etc behind fabric. Wood stain, epoxy floor, etc. The air never feels great but doesn't feel terrible, though lately some eye irritation is worse in that room. Would like something for VOC, maybe airborne pollutants, CO2 a bonus.

I'm a beginner with IAQ and not sure if Temtop-style (momentary reading) or long-term monitoring is best. Thanks.

I am planning to install a mvhr in the attic to ventilate 4 bedrooms and 2 bathrooms and was looking forward to getting rid of the extractor fans in the bathroom since they are very noisy and in my case are not very effective in battling the humidity during baths. I came across the Aldes Inspirair Side 180, but for the bathroom grille to be effective against the bath vapours I think at least 130 m^3/h should be extracted from one bathroom during baths (the 2 bathrooms are never used simultaneously). I was interested in the aldes bap'si dual flow 45/135 m^3/h, so that when I pull the cord it intakes 135 and the other bathroom stays at 45, but I dont really like the idea of having a cord hanging around in the bathroom... I was wondering if there are humidity controlled ventillation grilles with capability of going up to 130 and at the same time send a 0-10v signal to the 0-10v air quality inputs in the cmv to put it to boost mode and increase to the adequate air flow rate (or another similar solution). Thanks in advance

Airgradient One is missing key sensors. Are there any plans in the works for Airgradient One to add pressure. CO and radon to its measurements?

Hey everyone! I'm looking for recommendations for a compact air purifier for my bedroom. Here are the details:

​Country of residence: Rome, italy

​Room volume: Around 130 sq ft / 12 sqm

​Filtration needs: Traffic pollution/smog and grass pollen allergies

​Any suggestions would be super appreciated!

(I’m in wa state. There are three fires close to my city)

We live in a mobile home and it’s a newer model but smoke is inside, and I have two hepa air purifiers. I’m so sleep deprived because my throat is swollen my face is killing me, nothing is helping the pain from inflamed sinuses and my throat. I’m starting to have hypnic jerks when I try to sleep because of deprivation and I’m not afraid of them or feeling anxious, I’m mad. Mad I can’t sleep. I’ve checked everywhere and sealed windows and the smoke keeps seeping in, a lot of it. I don’t know what else to do. Is it safe to wear a mask while you sleep? My ears are so inflamed, every little sound keeps me awake. I’ve taken allergy meds and they don’t do anything, they talk to me like it’s not a big deal. Losing sleep is a huge deal, I start deteriorating quickly mentally. What else can I do?

Has anyone bought an EnviroBiotics device? Does it work? It's an interesting concept and an alternative to traditional air filters. Are there any competitors?

https://envirobiotics.com/

Long one here, my apologies but going crazy over this! May 2025, we rented a rug doctor for the carpets in our upstairs bedrooms as the landlord refused to allow us to replace them, cousin had been crashing the upstairs master bedroom and was a smoker, never smoked inside the home. Wanted to just clean up and freshen up both rooms after he left. About two weeks after, I started feeling my skin dry up, massive headaches, stomach discomfort and a burning sensation on my lips after spending time in the master bedroom. This continued and I left the master bedroom and moved to the downstairs one, directly below it, and I soon started feeling the symptoms all around the house. My mom was hospitalized with a cough, I went to the hospital multiple times due to the headaches, got to the point where we could only sleep/live in the living room as that's where the effect was lessened as we had the biggest windows and doors opened.

Landlord sent us an exterminator (thought maybe something died in attic), an air quality/environmental expert (said there was nothing going on, refused to show results since landlord paid for it), and changed the carpets out. Once the carpets were changed, I felt absolutely nothing for a period of about 8 hours, until slowly but surely, all of the things I felt came back.

We rode it out until this past June, moved to a new place and didn't bring in any of our old furniture, a few days in, I started feeling the exact same things, my mothers coughing came back, strong headaches and foul taste in mouth along with dry skin. I have HEPA filter purifiers (spent about 1.5K) in every room, but this still comes on strong and I am concerned I am losing my mind over this. It is odorless, and any time I leave the home, I am immediately better. The experts in my area refuse to give a quote or assist as it is not visible/traceable like it would be for mold and tell me my purifiers/monitors showing increased levels of activity aren't an accurate indicator.

Has anyone have any similar experiences or advice? Would greatly appreciate all knowledge and assistance. I'm very tired and drained and afraid.

Hi, I’m in Southern California and have three conflicting reports:

• Apple Weather says 172 (Unhealthy)
• Watch Duty says 37 (Good)
• IQ Air (Air Visual) says 47 (Good, but nearby city has an Unhealthy alert)

I feel uneducated and unsure who to trust. Any wisdom?

Thank you =)

My [handheld Prana meter](https://pricehistory.app/p/prana-air-pocket-pm2-5-air-quality-dCxYnFIm) (indoors) saying PM2.5s are 1.

My [Morento Room Purifier](https://www.amazon.com/Purifiers-Display-Quality-MORENTO-Double-sided/dp/B0C1MPDTG7?pd_rd_w=JOy2C&content-id=amzn1.sym.82d09d08-f3da-4d6b-a579-c3bacd2f88e8&pf_rd_p=82d09d08-f3da-4d6b-a579-c3bacd2f88e8&pf_rd_r=YB4FGB8VB9HZWF2ZRPDN&pd_rd_wg=yJK2J&pd_rd_r=88d3f6cb-ab57-4745-90bf-36f3f2792d50&pd_rd_i=B0C1MPDTG7&psc=1&ref_=pd_basp_m_rpt_ba_s_1_sc) (indoors) is reading 361. If I open the doors to let in outdoor air, it gets worse. The numbers go higher.

Those are about 2 feet apart, the Prana on the floor

[FireSmokeCanada online forecast map model](https://firesmoke.ca/forecasts/current/) saying 1-10

[PurpleAir meter data online](https://map.purpleair.com/air-quality-standards-us-epa-aqi?opt=%2F1%2Flp%2Fa10%2Fp604800%2FcC0#8.59/44.3905/-72.6835) averaging 50-60 in the area.

I’m in northern Vermont where wildfire smoke (from Canada) has been an issue over the last 3 years. We live in a valley.

Have been wanting to do a 4.7 mile 2263 foot elevation gain hike. I’ll skip the hike if it will likely damage my lungs.

Looking for guidance. It’s unclear to me why there are such differences and how to make smart choices regarding strenuous exercise.