AirGradient let us know this morning they created a coupon for $10 off for anyone watching this video-use code WG8N2JG during checkout. They also just released a new 'ONE' version of the DIY Pro, with a few extra features. Let us know how you measure the air quality in your own home!

Definitely interested in this but they really need a POE option for a more professional installation (and i'm a big fan of wired networking vs a smart home full of wifi devices). I'm sure this is something they can do in a future revision.

Made my own since their pricing to EU with shipping was quite steep.

How timely! Was just looking for such a thing on Amazon a couple days ago and was not impressed by their offerings. I just ordered 2 of these in kit form and slapped the coupon on it. Thanks, Jeff!

Yeah, you definitely want Energy Recovery Ventilation (ERV) systems to help make sure you've got good quality air from the outside and bring that into the space where humans need to be breathing.

I've had one running in my office since not long after your first video on the topic. It's amazing to watch the CO2 levels, and I ordered a few additional PCBs to build more.

I bought one of these a few months back, and I really like it. I’m mulling over getting one of these new ones now

I’ve recently got HA running on my network and dove down this rabbit hole with ESPHome. My first setup for IAQ was a QT PY ESP32 Pico with a BME688. Never attempted to double check the accuracy but after a few weeks I noticed some correlations between temp & hum and the rise in IAQ. Thought it was pretty interesting.

Just recently started using a portable QAI on my desk, very insightful. Especially the co2 levels when the room is closed up for long periods of time.

Thank you so much, I've been looking for something like this for ages as I run 3D printers in my home office and I need to know how well I'm ventilating things, and just how bad some of these resins are. That coupled with the Home Assistant compatability makes it a no-brainer, I've ordered one this morning.

Really like this Air Quality stuff. Thanks Jeff & Joe.

Just ordered the AirGradient One for my home. My wife is currently in the hospital with pneumonia and has been for a week. I just want to do anything I can to make sure she has the best air quality at home so as to reduce the chance of any infection from bad air.

I looked into air quality measuring today and ordered some parts from AliExpress. And now I found this video. Immediately ordered a One DIY Kit. Thanks!

This isi such an important conversation as the correlation between CO2 concentration and COVID-19 is really similar. If CO2 is high, the risk fo COVID-19 is high. Thanks for this.

I have a couple pi zero w with pimoroni enviro+ hats and pms5003 sensors. They provide a wide range of air quality information as well as temp and pressure. The Luftdata project has data from around the world fed by these sensors. Sadly not many in the US.

I’ve had a DIY version of something similar using a Pimoroni Enviro+ for a few years. However, as your dad says it’s the software that works the magic and the software running the Pi version leaves a lot to be desired. Placed an order for one of these to try out. Thanks for the coupon!

If you want something more simple than HA for getting dashboarding for these devices. You can use docker to quickly spin up a prometheus collector and grafana. You can use templates already available for grafana to get basically the airgradient dashboard and have a configurable setup. I really like my air gradient.

Great vid, just picked one of these up myself!

I am HVAC Specialist and worked in some high rise dorms that got renovated from old systems to new . Some of the buildings had CO2 sensors that were supposed to increase outside airflow to large meeting room when occupied if co2 went up. But the controls company never really set up the scheme correctly, and the sensors were never calibrated or tested . Maybe these days it is different but the whole HVAC approach is now totally different after covid. Anyway I wish I had one of these Air Gradient units to play around with then ( retired now). I may have to get one to try out at the community radio station to see how we can improve air quality.

Dude, your dad is awesome.

When covid started my wife got really scared about viruses lurking in our house, so I bought some Airthings sensors and automatic window shutters that I connected to Home Assistant. The Airthings sensors measure CO2 levels in the house and the shutters provide ventilation when needed. The Home Assistant dashboard shows a big green signal that everything is ok, which makes my wife feel save & happy. And I have a ton of interesting data. win-win. I did not use a ventilation system as that needs maintenance, and buying, installing and operating such a system would probably cost me more than the heat I lose when the shutters are open for a while.

You sold me, this is a fantastic solution for air quality monitoring.

Shop seems to be down as far as I can tell but I'm very excited about this, I had been planning to build my own but this is much better than I what I probably would have built.

Thank you for this - I just ordered a kit. I'm pretty sure I know what it's going to tell me, but I don't have a lot of options to change things. I'm in an apartment with only south facing windows, and no real vent to the outside (bathroom vent). But, at least I'll know for sure!

This is a great video and relevant to those of us in urban and suburban environments.

Where I've been lucky enough to specify control room architecture (for engine test / development facilities) I've always specified 6 to 8 changes of air per hour for the control room with test cells running a slight depression. This keeps the air fresh (and the Engineers awake) and prevents any engine exhaust or blow by leaks from getting into the control room. I leave the design to people who know how to get that level of air exchange without making the control room draughty.

Interesting widget. I've been thinking about going the air quality route.

this is cool stuff, I've DIY'd a CO2 sensor and bought an Ikea Vindstyrka, but something all-in-one like this that's also compatible with Home Assistant out of the box sounds amazing, especially the outside one since it's not trivial to DIY a weatherproof enclosure that lets air in properly. I'd be interested in whether you lose any of the calibration and stuff when you reflash them to ESPHome

Commercial HVAC systems can have CO2 sensors for determining circulation. “Whole Home Ventilation” is also becoming common that brings some outside air in while running the fan at a lower speed at an interval.

This is super neat, I'm thinking I might buy this and fix up my old air exchanger I have in the basement. It should be feasible to automate the air exchanger turning on with a smart plug with the data from this sensor in Home Assistant.

I live in Belgium. Since the pandemic, ALL new residential buildings have a CO2 controlled D ventilation system. These buildings are called "BEN woning", in which the energy consumption is amazingly low. Unfortunately, the indoor tobacco smoke (very common in Europe) of the neighbors turn these buildings into boxes of permanent inhalation of nicotine and formaldehyde. I haven't find a sensitive sensor to measure the air quality in my apartment. There are some nights in which the tobacco smoke is so intense that I bleed through my nose and throat but the meter still scoring the air quality as excellent! I'd like to try your product.

I put a ESP32 D1 Mini with relay board on my Heat Recovery Ventilator (which is just a box that transfers temperature from old stale air to incoming fresh outside air). I have Home Assistant automatically turn on the ventilator using the ESPHome relay when CO2 gets over 900 ppm and it shuts off the HRV ventilator when any one of my three CO2 sensors dip below 600 ppm. I've been running the system for over a year and it works amazingly well.Running the ventilator all the time is a waste of energy so this way, I get on-demand fresh air when it's needed.

Picked up an Aranet4 earlier this year. I was surprised to see just how high the CO2 levels in my bedroom got to overnight. I think I might need to get into this sensor and HA over Christmas.

Just ordered an Outdoor, and even being heavily import taxed here in Denmark 🇩🇰 I can’t wait to receive it and see what the particle count does when my neighbor tries to burn wet wood in their wood burning stove 🤔🙄 Also… forgot to add the discount code, contacted customer support and got instant friendly reply 👍👍👍🙏

Ordered an airgradient off the back of this video and it arrived last week. Works flawlessly and can highly recommend. Just need to get it flashed and integrated into home assistant now!

The IKEA PM air monitor can be hacked with an ESP8266/32 + ESPHome to connect to HA.

Had the Outdoor up and running for a couple of weeks now. It's just a nice piece of kit, assembling is a 5 minute job, setting it up another 5 minutes... And it's quite interesting ( scary 🤔 ) to watch how the PM2.5 values rise when the neighbors wood burning stoves gets fired up around the house ♨ Temperature measurements are way of in cold temperatures, but I got a great response from Airgradient, and they are working on a fix. Just ordered an Airgradient One for indoor use - thanks for making me spend money Jeff 😁

These look really good...

love your channel and your dad is awesome. (I'm a former syndicated radio host and ham operator, but would probably love this anyway.)

Your video on air gradient a couple years back motivated me to learn soldering. Now that original air gradient is monitoring my garage air and the garage door status, and lets me open/close the garage door from home assistant.

I got the airThings because I wanted to monitor the radon in the basement. I only got one because they are expensive. I am excited to get some of these airGradient devices because they look superior for monitoring the rest of the house.

In Europe I quite like the Aranet 4. At the time I bought it, it was one of the few options with a decent sensor for CO2. As I recall that was a fairly significant chunk of the cost of the device. Their other stuff is mainly aimed at industrial applications, but I believe there is an integration for home assistant now over Bluetooth LE.

I've definitely been keeping an eye on the solutions available, and had heard of AirGradient before. Also looking at environment monitoring in general for both indoor and outdoor. Always tied to how well it works with Home Assistant. We have ane electronic air filter on our fan system, so I'd really like to see how well it does cleaning our air in the house. One thing we don't have yet is a fresh air intake, but we got a quote to add one from the HVAC company we work with. Right now the biggest hurdle for us is cost. AirGradient's options are definitely something on my list now.

The university of vienna has also implemented air quality monitoring within lecture halls and the such, so that the people know when to open some windows.

I've built two of the originals, and have been running them on home assistant, as well. Still haven't got round to designing a printable case for them. Maybe one day. For now, they won't, except when they crash, but it's quick to reboot them.

This is awesome! Thanks AirGradient! Since I've been monitoring my indoor air quality at home, one surprise has been how much and how fast cooking degrades the air quality. Even when sometimes the change is enjoyable - baking bread or apple pie may introduce VOCs, but it's hard to argue it is unpleasant!

The part your dad was complaining about is a D1 mini, which I'm pretty sure AirGradient purchased rather then built.

You can connect the airthings in HA and with a bluetooth connection and get the data localy stored

I've always had issues with CO (carbon monoxide) detectors, if they can come out with a model that can detect that I would happily purchase a few.

If even Daddy Geerling can't get his hands on a Pi, the rest of us are out in the cold, like Forever.

We need a one monitor device with multiple sensors, each can be placed in different rooms or levels. They are expensive to buy one for every room or level. I was feeling so tired and sleepy most of my time home and I was wondering if the oxygen level is low due to lack of air flow.

It's cool doing this with your dad.... I miss mine :/

Lower CO2 by adding house plants that are good at capturing CO2 such as bird's nest fern of snake plant. Also, in the talk room it would be ironic to use, if the room is regularly at 75F and 75% RH, dumb cane. Dumb cane absorbed 23.9% of the CO2 in 2 m^3 of air in less than 8 hours in one Malaysian study.

We had problems at a small office building. Many employees having URI issues and one would lose her voice after 30 minutes. They moved her to another building. The problems were exacerbated after there was water damage to one ninety foot outside wall. The entire wall was abated, but tests indicated high levels of mold in all four zones. Unfortunately, there were no specific levels for mold (thirty years ago). After I retired, my URI issues ceased.

When they make one that will also measure N02, S02 and ozone I'll buy one.

I am using the tuya air monitor which have relays on the units so I can directly trigger equipment to counter abnormal levels in humidity, temperature, co2, pm2.5, pm5, or tvoc. It also has cloud api integration for various services, and has at least several months of 5 minute logs of all of the monitored sensors available from their app.

The Undecided with Matt Farrell channel is providing updates about his Net-Zero Home build, and air quality is something he's talked about a great deal. If particular interest would be the Energy Recovery Ventilator system.

I'd love to be able to use this with NodeRed. Not seeing any support for that at the moment. Would be awesome if the firmware supported MQTT. Guess I have some learning to do.

I notice these devices don't cover Carbon Monoxide. They do Carbon Dioxide (CO2), but not plain CO. But CO is odorless, tasteless, and commonly created by lighting fires or using natural gas powered systems, and can be quite deadly. Now, you don't want to get into the fire alarm/CO alarm category, because as you've said they have a lot more regulations you have to get through. But a Carbon Monoxide data logger could be very useful, when combined with the appropriate types of alarm devices.

Sick Building Syndrome (SBS) is real. I worked at a place that had it. It was an old coffee warehouse built (I think) in the 20's and was a brick fortress that could withstand a nuclear attack. In the 80's it was renovated into an office (prime location in Chicago's Downtown) and sealed up completely. Saving energy was the thing then. I started having sinus problems soon after I started working there. But was it me? Soon before I left the company, they sent around a survey with a lot of questions directed toward such related health issues. I don't know the results, if "they" told anybody or if any corrective action was taken. The company itself folded a few years later, which was a good thing, actually, and the space was divided up to different businesses.

I only have a modified IKEA Vindriktning with an esp32 in it. I see AirGradient is not impressed by it (only pm2.5), and I think I agree. You get what you pay for, I guess. Probably getting one of these when I move in November

Great video. I don't know much and can't really do anything now, but after I bought my home, I found a builder, Matt Risinger who posts videos about building science and why you want a net zero home or close to it and how to avoid some air issues. For residential, he recommends an ERV hvac system, among other things. His videos are good, and I learn a lot.

I am in an apartment building with trees around the building with a lot of surface roots. When it rains the ground remains moist and wet for several days afterward. This results in mould and mildew forming in the soil. As the area dries the wind generated around the building raises the mold and mildew spores into the air and into the building through the pressure intake. The results are regular allergy issues. Each apartment is about 400 sq ft. It was built in 1974. Originally the apartments had transoms over the doors to allow fresh air circulation from the hallways where the building intakes dump it. But those were eliminated when drug addicts and others discovered they could be used to gain entry to the apartments. I found my Honeywell air filter which is near HEPA catches items like cat litter dust, cat dander and stray fur but it is not clear how effective it is against mold and mildew. The Air gradient would allow me to determine other contributing factors such as fine particulates.

Couldn't find any source. So should this be considered open?

BTW, Airthings can also be connected to Home Assistant via Bluetooth BLE. I have one Airwave plus connected like this, and apart from disconnecting and reconnecting and producing a little spotty lines in the graphs it's just great. No PM-measerument though.

M5 stack DIY is a cheaper almost plug and play solution. Not tried to esphome these. My wife bought standalone air quality monitors for our office rooms.

Is outdoor new version also in the works with release "soon"?

I bet your dad would argue against having fire alarms required by law.

Jeff you could you do a new video on the latest version on how to set up the software ? Thanks

Am i missing something?, can't see the link to your esphome setup. I've always thought it odd we go outside for fresh air, but when we pull that same air into our homes/ cars we filter it!

Some manufacturer really needs to figure out a way to make these affordable. 100 bucks is an absurd price for anyone who isn't either rich or very deep into home automation, it's well above what any sane consumer would be interested in paying. When these go down to around 20-30 bucks is when they become interesting.

Could a version of these replace existing stand alone fire alarm / smoke detectors? A drop in replacement of a dumb sensor with one providing data would be great. And I like the five year battery because mine are always chirping for new batteries.

You can get a very precise infrared co2 sensor part for around 10$ and wire it to a wemos d1 mini which is 2$ to make a 12$ co2 sensor that works completely locally.

Shout out to brother Joel haha

Interesting 👍

The new version looks very nice. However, I'll probably try to order the older version which you featured ~2 years ago - considerably cheaper & parts are freely available are Aliexpress, etc.

Thank you so much for this video. I've been looking hard at buying into the air things ecosystem for our new 100 year old house but have hesitated due to price and being locked into a proprietary app. Now I'll give air gradient a good look! Thanks!

At 7:42 your dad mentions measuring Radon, I can't find if that is also possible on the AirGradient device or if that was only on the AirThings?

I like the device but buy have situation where I need onboard storage (maybe even SD card). Is it an available option ?

220AUD for the new one coming is not cheap. plus shipping. No home assistant integration so need to flash as you said. I get money goes back into the project etc.

At work were trying to find a pm 2.5 micron sensor that will survive an industrial enviroment without dieing every month. We use the data to control out dust collection equipment. So far we either can get very expensive sensors which cannot size the dust, or sensors that size the dust but die every month. And the sensor company says we can't calibrate or clean the sensor without disrupting the laser sensor. So we have to throw it out and start over. We just can't find a sensor (yet) that seems to work.

I have been running an AG Pro v4.2 since your last video on AQM. Now I have two running custom MQTT based firmware to integrate with home assistant in a more customizable manner. Also had a LOT of issues getting ESPHome to work properly on my C3s that I replaced the 8266s with. Probably a me issue more than anything but I said to hell with it and wrote my own code. I am excited to get my hands on the new v9 boards but I feel like the removal of the pin headers for the ESP32 chip is a step backwards. Maybe the Pro version could have headers but the prebuilt has the soldered chip?

I built my own sensor stack for indoor ait quality base don an ESP32 with many sensotrs and data in home assistant. I have them in each room. Each sensor is a BME680, measureing Barro Preasure, temp, humidity, CO2, Gas Resistance (ppm), IAQ calibration, A LUX sensor for measuring the ammount of light, and a SGP30 sensor for TVOC and Co2 per breath equivelent, mmWave Dopler Radar sensor to get any and all movements in the room, MIC/Speaker for new home assistant wake word system to control HA wqithout Google or Alexa and keep all my data and machine learning on my server. The sensor boxes, I also equip with a C11001 RF Transciever to control my remote control fans and stuff. This way when no ones in the room, fans and lights get turned off automattic. And then I have a full heatmap of sensor data from each room overlaying a floor plan and you can see where bad air is and good air is...

@GeerlingEngineering datavac spotted at timestamp 7:05! Would you recommend those? and would you ever think of doing a quick review on one?

I think this is a great idea. We're increasing the energy requirements of new construction but no one is talking about actual air quality.

I’m from the STL area and your dad looks really familiar is there anyway I would recognize him? Like is he well known?

I would imagine that making them mandatory by regulation would reduce the risk of lawsuits.

Is the device audible? At least the pm sensor has a fan, so it will create some noise. I haven't been able to find any info on the noise level though.

Hey Geerling Engineering! Simon here✌I'm a part of a danish indoor air quality monitor startup and we're on the lookout for affiliates that can help people find our product... But right now, we're just trying to figure out how the "game" is working! We really just wanna find ways to make collaboration that'll be beneficial to all parties; creators, consumers - as well as ourselves. Would you be interested in having a quick, informal chat - learning us about the ins and outs of the industry? Best, Simon

thanks, it would be pretty helpful if you could put in some practical examples of what you would do when you have data that indicates typical problems.

A little anecdote… These days I have an office. But when I started my job eons ago my first desk was crammed in between a wall right outside the server room, and another cubicle. There was a huge vent next to me. I say vent, it was more like a hole to the outside world, with a filter and grate. Air was sucked out of it, but it was still a bit chilly at times. In any event, those first couple years, I felt like I got mildly ill, colds and stuff every other week. The second place I was stationed was right on the other side of the cubicle wall after some people sharing our space moved out. I not only got a slightly larger space. I also, miraculously, got sick basically 1% of the time without that vent next to me. I _wish_ I had an air quality monitor back then.

Really interesting video and topic. Would you (or anyone) have recommendations for trustworthy youtubers who have reviews of standalone air purifiers?

Ordered. Thanks for the coupon code! I am so lazy as I have a Plantower PMS5003 and just don't feel like putting everything together and coding it up.

Does this thing work without a subscription? An app?

It would be nice to get some info on how to use the Prometheus Airgradient custom firmware to integrate with self-hosted monitoring (grafana).

This is surprisingly expensive for an unwarranted assemble it yourself sensor.

How's the accuracy of this device?

Nice video! IAQ is a supremely overlooked matter, and these DIY kits look great. I was hoping to see ethernet connectivity, but it seems to be absent. If you're listening, AirGradient, please add an ethernet option in the future.

Do they use an actual CO₂ sensor (which is worth dozens of $$) or do they derive it from VOCs?

If only they had spent a little extra on the Co2 sensor. I would personally have preferred the Sensirion SCD30 over the SenseAir S8