Bests & Worsts Reviews from Amazon

Not a professional, just a concerned father who wants to have his kids breathe safe air. -  Pros:  Looks nice -  Cons: - Inaccurate testing less than 7-days for everything except temp - You have to buy a separate Airthings hub $70.00+ to use the app away from the house - Levels could read higher than they actually are which could cause needless concern - Different phones connected to Wave Plus app will display different results/numbers at same time To say I am disappointed in Airthings products would be vast understatement. The devices I used are fool’s gold with a dash of scam. After I purchased Airthings Wave Plus device, I read the instructions, activated it, and started my first test in my upstairs bedroom. Very quickly numbers were generated and radon and CO2 levels were in the red. With a newborn and toddler, I needed to correct this. I vented  the room and grabbed 1 CO2 detector and then eventually a 2nd in case a detector was defective. Despite the high co2 levels, the detectors never activated. After venting the room, the numbers did eventually fall. I left the Wave Plus alone for a few days. The app showed that the radon and co2 levels remained unsafe at times. The high radon levels in my upstairs bedroom did seem odd, but I read that radon can actually travel to the top of homes through the HVAC systems. To verify the high levels, I ordered an Airthings Corentium (dedicated radon scanner) and 3 radon lab charcoal kits to verify the numbers. Radon does fluctuate, but my last long term (6 months) test in the basement was 2.2 pCi/L. To see how accurate this thing was, for the next 48 hours, I set up a table in my bedroom with the Airthings Wave Plus, Corentium, Charcoal kit, Ecobee 4 sensor, and Thermpro to compare numbers. I also set up 1 lab kit in the basement to see what the numbers were and if radon could be moving upstairs through my hvac system. Once the first 48-72 hour test was completed, I moved all the testers to the basement (minus the ecobee sensor) and started another 48-72 hour test setup.  *Results data uploaded to review*I was up every 2-3 hours to help feed newborn and would check results after --------------------------- Test 1 (bedroom) Radon Averages: Wave Plus: 3.21 pCi/L, Corentium: 2.07, Charcoal Kit: 2.6 pCi/L   basement Charcoal kit: 3.8 pCi/L – Temp averages: Wave Plus 76.3, Thermpro 74.7, Ecobee 4: 74.4 Humidity average: Wave Plus 37%, Thermpro 33%, Ecobee 4 39%   ---------------------------   Test 2 (basement) Radon Averages: Wave Plus: 5.04 pCi/L, Corentium: 3.82, Charcoal Kit: 3 pCi/L – Temp averages: Wave Plus 68, Thermpro 67.9 Humidity average: Wave Plus 38%, Thermpro 32%   ---------------------------   The short term results (48-72 hrs) for both Airthings products are ridiculously inaccurate. The best thing I can say about these products is they might give you a glimpse at your radon level. Wave Plus looks to read high .5-1.5 pCi/L and Corentium looks to read about .5 lower than a during the same time. The Wave Plus appears to only be accurate for temps. I did buy an air purifier that monitors air quality and does a simple color display, Blue (good), yellow (average), red (bad). When the purifier was blue, the Wave Plus would be red, etc. Considering how inaccurate the radon results are, I trust the purifier.  for testing less than 7-days, these products are a disaster. It is possible it does better long term, but I will not make it that far before returning. You also need to buy their very expensive Airthings hub to use their app away from your house. **Update** 10/16/20I connected two separate phones to the app at the same time, a Pixel  and an I-phone. The app displayed different readings for the same device at the same time. How? Is this product even legit? Has anyone else experienced this?