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Hello,

I am very worried about the place i am living with my kids as recently came to know about mold in the washroom and some other places as well as condensation on the windows and probably mold at places where i couldn't reach.

While have asked for the landlord to arrange Inspection by Mold Professionals , meanwhile i bought this Air Purifier which states it will remove mold spores.

https://www.staples.ca/products/3000097-en-fellowes-aeramax-dx55-air-purifier-200-400-sq-ft?listId=scoped_search

However , later realized that it creates an Ionized field to help safely remove airborne pollutants, as pics attached.

I heard that ionized field creates ozone and thus any purifier which is ionized, is not good?

Can somebody please give me any suggestions for best airpurifer/s(Non-Ionized) for indoor air to help remove mold spores along with other things?

Please also give any suggestions to improve indoor air quality?

Thanks,

https://preview.redd.it/ylje1fotdfge1.jpg?width=750&format=pjpg&auto=webp&s=fc9bd18c6d34b8fbd2ac8b150e8904c72031f590

https://preview.redd.it/amg8rbgudfge1.jpg?width=1536&format=pjpg&auto=webp&s=d38b1674f9e28bb5cbd00083d7848d083c97e5eb

am trying to develop my own particulate detector for PM1, PM2.5, and PM10. I am using a red laser and a BPW34 photodiode, where I obtain a voltage graph based on the intensity of light incident on the photodiode. As dust passes in front of the laser, it is scattered and reaches the surface of the photodiode, causing a voltage peak. However, I am having difficulty identifying different particle sizes from this graph

I currently have a PMS5003, but I would like another particulate measurement device to make comparisons and conduct a better study. Which cost-effective equipment do you suggest?

As the title says, can cutting cheese indoor raise the HCHO levels reported by an indoor air quality monitor? If I'm not wrong, cheese emits acetaldehyde which may be picked up. But how much cheese do we have to cut for it to actually get picked up?

I have an air purifier but I need to replace the filter (gonna take another week to come in the mail). The problem is that I was recently sick with a very bad cold so not having the purifier kinda makes it hard to breathe. Is there a way so that in the meantime I can improve the quality of the air in my room without one? Thanks in advance!

Essentially just looking for a carbon monoxide monitor. Not too concerned with radon in my parts. Would this suffice for a decent monitor?

https://aranet.com/en/home/products/aranet4-home

I forgot to write in the OP that this is regarding the LA wildfires

I watched a webinar btw with a professor of preventative medicine specializing in air pollution and he says we'll feel the effects for months. We had rain but I feel like there could still be some toxins around. My apartment was 1 block from a burn area (Sunset fire) and I was in a mandatory evacuation zone. I was going to move anyway but I don't know if moving to OC is overkill.

I work for myself online and can live anywhere (I am not tied to a location) and will have zero financial strain moving. I also don't have family or friends in LA, I just lived there cause I like it. I find OC more sterile and don't like it as much but that's moot because I want to put my health first. the only drawback is that my doctors are in LA and it may be complicated to find new ones and have the old ones transfer info to the new ones etc.

But I still can't decide if I should move here for a year and move back or perhaps just stay in LA but in a different location.

I've watched people use their Temtops and Airthings devices to measure TVOCS after the rain and it seems good but I'm still hesitant because I've watched two webinars with experts (the other with the Clean Air Coalition) and some experts belief that we will have a "disaster after the disaster" and that it will take months (others say years) for the toxins to go away.

Just got a Qinging gen 2 AQ monitor. Hooked it up and the eTVOC was reading about 55 VOC index. Stayed there for a couple hours and then has slowly started creeping down to where it is now at 22. The whole time the monitor has been on my desk right next to me. I've read here and there about the difficulties in absolute measurements of VOC levels, and that eTVOC is essentially worthless. If it's worthless, why do these companies put it into their monitors? Is there anything I can take away from what this monitor is telling me about the VOC levels? I've tried reading a little bit here and there about what it all means, but I can't make much sense of it all. Would appreciate any help! Thanks!

First post, so pardon my mistakes. And thanks in advance.

I live in the high CO rockies. The house is very tight with infloor radiant heat. Fresh air is delivered via a Lennox HRV 1-150cfm unit with an added inline filter box. The inside air quality is fine until my neighbors burn wood to heat their house. Then the HRV draws in the resulting smoke. I have the HRV plugged into a WEMO smart plug and timed to turn off when they are most likely about to start burning wood. Then turn the HRV back on when the smoke clears and their fireplace is burning "cleaner".

I am wondering if it is possible to use an outdoor sensor like Purple Air and somehow link it to the HRV to turn the unit off when the PM levels rise too much and back on when it clears up? Of course I'm trying to keep this as simple and inexpensive as possible.

Thanks for any suggestions.

I just moved into a new apartment in a fairly new building a few days ago, and I noticed that the when I’m in the bedroom, the only room with a carpet, my lungs and throat feel a bit irritated. When I leave the apartment, I feel fine.

There is no obvious chemically odor, but I’m wondering if something could be causing the irritation? The carpet doesn’t feel like it’s great quality. Now I’m hesitant to move the rest of my stuff in and I’m considering already breaking my lease.

Let's say you have the option to have 50-70 CFM of continuous ventilation, either supply only or exhaust only,

OR You can set up a 1000 CFM fan that comes on when CO2 is too high, quickly pulls the CO2 levels down, and then shuts off.

Let's say the volume of the house is 35000 ft3

Which would you choose, and why?

Lately I noticed that people starting to mention PM0.1 from metal fumes and it seems to pretty harmful in long term. I wonder that should I take this matter seriously yet. And I am thinking of upgrading from HEPA to ULPA (filter is 2x the price from H13 to U13), Should I consider it yet?

I'm planning on purchasing one of these as a plug and play type device for reading PM2.5 & CO2 (interested in VOCs as well, but not as important.) I have an IQAir Healthpro+ and would like to know how often I need to run it. Any suggestions are appreciated, Thanks!

I been suspecting for years the house air is causing my skin to flare up in skin irritation all the time and rashes.

Everything I leave the house or goes somewhere else, my skin calms down but when I go back in, my skin starts feeling irritated.

It feels like dust builds up in the house really quickly on the main floor, as you can see dust in the house.

I already done the following to no avail:

• gotten a winix air filter
• gotten new furnace
• duct cleaning several times
• install water softener

I don't know what's going on but it's been driving me nuts.

Is it voc or something? Should I get an iq filter and etc?

Hey guys, has anyone worked with generic sgp-41 modules available on Ali express? I received one, soldered the pins and plugged into rasp pi via i2c. But it’s not coming up on i2c discovery. Wondering if maybe 3v is not enough or it needs resistors?

I use hard water cartridges in my humidifier to prevent buildup of crust. The box and product description indicate to change the cartridge every 30 days. Humidity in the winter changes daily and there are weeks where it rains and there are weeks where humidity is in the 20s. I may only go through a quart of water per night in the bedroom but can go through 2 gallons per day in the living room. Can anyone give me their personal experience and information on how they know when to change the hard water cartridge. Thank you.

Hi everyone,

I’ve recently purchased an air purifier. I used to live in China, which is why I got it, because I was worried about air quality. Now I live in the Netherlands, in the Randstad region. Outside, the PM2.5 is about 20 µg/m³. I often air out my home, I don’t do anything unusual indoors, and I don’t smoke. The device shows a PM2.5 level of max 3 µg/m³ when it’s working, and it brings it down to 1. Does this seem accurate? Any insights would be appreciated especially because it seems very low.

Device is LEVOIT Smart True HEPA Air Purifier 400S.

I never had reasons to believe air was bad but wanted to be sure. Now feels I might bought this without use haha.

Thanks

I’m getting an open air 3D printer and will stick to PLA only. I want to enclose it as I’m worried about particles, VOCs, etc. what’s the safest way to do this? I want to put it in my garage but there is no window so can’t exhaust directly out. Would keeping the enclosure completely sealed be ideal? Do I want to exhaust through a filter? I’ve also read putting a purifier with HEPA and active carbon nearby helps alot.

I live in a city where I am surrounded by many different industrial sites. I am looking for air quality monitors to start the journey of figuring out who and where the worst polluters are. Is there anything out there that can distingish specific pullutants?

We are talking many trains, diesel truck traffic, steel manufacturor, oil refinery, and I'm sure more. We are trying to gather as much info with monitors as we can.

Obviously the fires have been horrible, and this extended touch-and-go time after the initial disaster feels neverending and directionless. No guidance on how toxic the air is, no way to know.

I’ve been masking outside, purifying air in 3 rooms, sealing up my ancient apartment windows, opening them desperately to try to let out the mass buildup of CO2 in my apartment, and now many days I’m getting a white dust on my windowsill that I’m learning/assuming is ash from the fires.

I’m beyond grateful that my home is okay, volunteering where I can. But it’s exhausting to maintain this much control over the air in an apartment. I’m not sure about y’all, but I would love the opportunity to breathe a full lungful of air without worrying.

Do we know if tomorrow’s rains will create any new acid rain conditions, any new problems (barring possible mudslides)? Or do we think they may finally bury some of the harsher chemicals into the ground and let everybody breathe for a day or two?

Hope you’re all staying safe.

I plan to puchase air quality device I can carry while walking. I planned on preordering PurpleAir Pixel: https://www2.purpleair.com/products/purpleair-pixel

Which device do you suggest and why?