Airthings-292 Wave Mini - Indoor Air Quality - Chemicals (TVOCs), Humidity, Temperature 20 x 30 x 1

I have 4 Airthings Wave Minis and 1 Airthings ViewPlus to monitor air quality in my newly built home. I was concerned about air quality as I made my home very airtight and energy efficient. Primary concern was VOC's and temperature variations throughout the home. There are 4 in-floor heating zones monitored by 4 Nest Thermostats for the floor heating and a total of 13 Fujitsu mini split cassettes. In a newly built home, you have many potential sources of VOC's including caulk, paint, stain, glues, etc. as well as unknown carbon dioxide (I have 8 Nest Protects to monitor CO) and radon.Results of about a year of use: I was surprised when the particulates got high during fire season and I placed 3 Winix air cleaners which run continuously and keep the PMs low or below detectable levels. You can see the PMs get lower as the air cleaners run.Since the house was open quite a bit during the "extended" build time, VOC's from building materials had mostly gone away. What was interesting were the VOC's from human occupancy.I spent over 45 years using NIST-traceable temperature data loggers, radiation detection and assay equipment, timing devices, etc and even visited the NIST facilities in Maryland getting a radioactive source calibrated against a primary standard. At that time, it was still the National Bureau of Standards.Accuracy Question: I know from years of experience that unless you can verify the accuracy of a device using either a certified testing lab or your own NIST-traceable equipment, you can only rely on the reputation of the manufacturer (just like the mfr claims of dietary supplements and disinfectants). Airthings has a great reputation so I'll have to go with that.Pros: 1) Can view all monitors on the Airthings app on your phone (provided you have a hub).2) Airthings reputation.Cons: 1) Need to purchase an expensive hub unless you can walk around and read the devices via Bluetooth OR you have an Airthings ViewPlus which has a hub built-in-which I have.2) No carbon monoxide detector.Bottom Line: I believe Airthings are the best consumer devices available. Since we have to rely on the manufacturer's reputation for the claims they make on the device measurement accuracy, Airthings is one of the best so I chose their devices.

below is a similar review I posted for for wave plusI was originally looking just for a smart radon tester before I installed a radon mitigation system and found the airthings wave system.at first I purchased the home kit which comes with a older wave 2nd gen, the hub and mini wave from Amazon warehouse (openbox). I had some issues with the hub as it was already registered and didn't want to mess with support who wasn't available 24/7 and ended up returning everything .during the initial setup I also (wrongly assumed) that the units would be WiFi/Ip based but the stand alone sensors only work via bluetooth or via radio with the hub. also without the hub the data isn't constantly recorded .I then ordered this new sensor wave plus, 2 mini waves and the hub (quite costly). setup was a breeze, unbox the sensors, download the app, register for an account, connect the sensor via bluetooth to your phone , update firmware and it's readym Then you plug in your hub add to the sensors to the hub via your phone.With the wave2 the radon level was high (as suspected as ally neighbors got their radon level tested professionally for 150 bucks . What I didn't expect was the co2 and VOC levels to be high in the house as well as high humidity levels in the basement.the co2 we were able to lower by opening windows and airing out the house, and humidity levels controlled with a dehumidifier in the basement.As far as the VOC i started looking into UV lights in the hvac and ultimately ended up with a Airscrubber by aerus installed from my hvac guy.after the airscrubber and hvac fans running the airthings wave sensor picked up the improvements.the web dashboard also is has a lot better data and is easier to see track historical data than the app as the app will show you real time stats we well as historical but can't zoom in on the data or set a custom time frame (zoom in).also the wave mini has mold detection but the wave plus does not and the wave plus (primarily for radon) has co2 detection but the mini does not so would like a unified sensor even if it cost more as well as the ability to have wifi (although this will prob drain the battery)I'd also like an option of hardwiring the sensor similar to a smoke detector and alert/push notifications for user or presets thresholds so I don't have to constantly monitor.overall great product but will make you think about how to improve the air quality after seeing the data :)