What are /r/AirQuality's favorite Products & Services?

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We just got this for exploring the same question

https://www.amazon.com/dp/B0BFF95ZQ3

So far co2 and tvoc are the big problem, both spiking over 1000, especially in the evening. But this may be seasonal with spring showing high particles.

Ok so to clarify, if I got something like the below linked ozone generator, you’re saying to run it ~2x a week for not very long at a low setting while monitoring the CO2 levels, turn it off, then wait 30mins until CO2 levels are normal, then the tVOCs should be at safe levels without having to constantly open/leave open my doors and and windows? I think it’s the ventilation in my apt though and clean air isn’t entering easily… my only concern would be O3 drifting into other apts at clouding at unsafe levels for them… and it would be tough to evacuate my whole floor lol… maybe UV is better? OR could I really generate at super low levels with the below and see it still work?

Ozone generator

EG Air Quality Monitor,... https://www.amazon.com/dp/B074FTVHFN?ref=ppx_pop_mob_ap_share

It needs calibration in outside air but after that can pick up measurments pretty quickly. It can be left on for multiple days and take measurements over time too, if the battery life wasn't so poor that is.

>My thoughts are that 400-500ppm is normal so 6x that is obviously bad. It was definitely the cause of my morning headaches.

I hear ya. I'd be curious to hear if your headaches go away with the window open or something.

You might be interested in books that talk about CO2 tolerance. I think it's quite interesting. Made me think about CO2 in a very different way, although I still lean towards your thinking that perhaps it's safest to live with ambient values (e.g. 400-500ppm) until the science becomes more solid. https://www.amazon.com/Oxygen-Advantage-Scientifically-Breathing-Techniques/dp/0062349473

Off what chandaliergalaxy said, your nose is the best indicator of the air being polluted. The best thing you can do is air the place out as much as you can, and perhaps get one of these: https://www.amazon.com/dp/B09T643TQ8

This will give you a decent idea of relative air quality in your home... anytime the TVOC begins to go up, you know you need to open a window.

I got something like this which works great for PM: https://www.amazon.com/Huma-i-Advanced-Portable-Measures-Particle/dp/B07RD7GWM2/ref=sr_1_3?keywords=huma+air+quality+monitor&qid=1648232054&sprefix=huma+air+%2Caps%2C166&sr=8-3

It can connect to your usb or run off battery. It turns off automatically after 15 minutes or so so it's just for quick reads. I can see a slightly advantage of continuously monitoring 24/7, but I make do with a few readings to get the idea and installed a HEPA filter in my car and it's been pretty good ever since. No longer need the monitor.

I have a Temtop M2000 2nd Gen, $225 USD: https://www.amazon.com/gp/product/B085C4KRH4/

Has some pros and some cons. I like it overall.

It claims to have a HCHO detector, but from what I can tell, it's a general VOC detector. Particle count, CO2 & VOC all seem to be accurate. The VOC reading is inline with a reading I got when I had a professional AQI consultant inspect my house. The CO2 fresh air reading matches outdoor readings I see online. PM2.5 outdoor readings match values I see online for my area. Temperature reads 4 degrees high (F). Humidity reading seems to be off, but I'm not sure.

• full-color, bright OLED display
• can view a single parameter in large type. Readable across the room if you have good vision. The color changes to yellow then red for alert levels; very noticeable.
• can view a single parameter as a graph
• particle graph is only useful for seeing large changes (in my case, cooking or neighbor's leafblower).
• graph shows last 24 hours, no way to configure otherwise; it won't show transient spikes (i.e. minutes) because the interval is it's too coarse
• you can set alarm thresholds for each of PM2.5, CO2, VOC, but you can only alert on 1 metric at a time (the one you're viewing).
• if you have it on the "view all parameters" screen, it won't alarm for any of the metrics
• configurable data logging intervals: 1 minute to 1 day; logged as daily .CSV files; access by mounting on PC/Mac like a USB thumbdrive
• 6-hour built-in battery time; I keep mine plugged into 5V USB charger for 24/7 monitoring; no issues here
• uses passive airflow sampling; has a small fan inside for periodic self-clean out; when this happens, the particle count raises dramatically, setting off the alarm if it's on the particle screen; happens maybe once a week

Wish it was in stock. Just FYI for anyone else reading this. https://www.amazon.com/Westinghouse-SP6390-NF-Replacement-Reactor-Purifier/dp/B08KQ11RMM/ref=sr_1_6?crid=339LYBV8H1R12&dchild=1&keywords=westinghouse+ncco&qid=1635368899&sprefix=westinghouse+ncco%2Caps%2C185&sr=8-6

Are you still seeing your VOC numbers go down to nearly zero?

The portable version they sell is really intriguing to me, as you can't easily reduce VOC's inside a car due to outside street pollution. Circulation mode can help, but can be tricky depending on the number of people in the car, length of the trip, and ambient VOC's esp at the start of trip.

I find high particulate can cause that. Any chance your in an area with fire smoke? Purpleair.com can give you a good sense. Particulate (vs VOC) seems most likely to me given what you are describing but that's just a guess.

In my mind, you have two basic options around this:

The first would be to get an air quality (particulate) sensor like this one (https://www.amazon.com/dp/B07DHXQXGK) and see what your indoor air quality is (I have not used this sensor).

The other option is just to assume you have an indoor particulate issue (which seems pretty plausible) and get a HEPA filter set it up and see what happens. The wirecutter has a good write up on HEPA filters https://www.nytimes.com/wirecutter/reviews/best-air-purifier/ - I like the Coway ones.

I like seeing my air quality so I do have an air quality sensor (not that one though), but realistically given that you can often get a solid HEPA filter for under $150 (including one of the Coway ones right now), it may be more cost effective get the filter and see if it helps.

Once you pin down the issue, you can (and should) try to figure out the source but a filter will hopefully help pin it down and manage the problem in the process.

I would make your own air purifier. https://www.amazon.com/VIVOSUN-Inline-Ventilation-Variable-Controller/dp/B01CTM0LLO

get something like this, buy 4 HEPA air filters that are on sale from whatever big box tool store. use metal duct (the stuff for vents) to tape it together. use the styrofoam from the packaging. also, since its 4 sided and a cube is 6, put duct tape at the bottom of it to seal it.

https://imgur.com/a/Hq2cs7E

excellent, thank you. I just got this air quality monitor below this week and am looking forward to using it. doesn't seem like u need suggestions, but this seems to come pretty highly rated for an insanely good price, so figured I would share! x

sounds like it should do the trick based on what you have shared. thx again!

https://www.amazon.com/gp/product/B00SY34B64/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

I have this one.... I like it a lot.

https://www.amazon.com/dp/B07DHYG2VK/ref=emc_b_5_mob_t

Re: the dust getting kicked up when your furnace comes on..... two questions:

1) are you using a decent furnace filter (such as a 3M Filtrete 1000), and are you replacing it with a new one every 30 days...?

And 2) how long has it been since you had an hvac tech do a periodic maintenance on your hvac system? Maybe it’s time.

https://www.amazon.com/Winix-5500-2-Purifier-PlasmaWave-Reducing/dp/B01D8DAYII?ref_=ast_sto_dp

very quiet

No worries - the IQAir is also in my post (it’s the youtube video I linked to).

It also got pretty bad reviews in wirecutter, thankfully the wirecutter budget option looks like exactly what I want: https://www.amazon.com/dp/B07DHXQXGK/

AQI and PM 2.5 - no apps, no wifi, decent display, accurate and actually works (supposedly, mine hasn't arrived yet).

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If your willing to commit 100$ i can recommend a meter.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.amazon.com/AiRead-M3-Industrial-Real-time-Composition/dp/B07FKXZQR7&ved=2ahUKEwiWrvyNjIjgAhUjHTQIHfRMBvkQFjAAegQIAxAB&usg=AOvVaw0yKZSqZP72MRsZDUC3HnW1