Anyone have any air quality sensor recommendations? Preferably one that i can easily extract data from for analysis.
If you’re having issues with air quality have your humidity levels checked. If it’s too low, a furnace attached humidifier will solve that by adding humidity to the treated air.
Search the HN archive. There are lots of debates and discussions about air quality sensors, especially around the time of the West Coast US fires.
But from right now, every time you turn on your gas stove or oven, open a window and set your stove extractor fan to maximum, even if it briefly makes your house cold.
(btw: iiuc the "special" thing about the SGP41 module sold by AirGradient as opposed to some Alibaba vendor is that the AirGradient one doesn't come with surface-mounted terminating resistors installed. If you buy one from somewhere else and want to plug it into the AirGradient board, you need to desolder those because the AirGradient's I2C bus is already terminated elsewhere.)
I have an older SGP30. Less luck there; it does VOC and CO2, no NO2.
[1] https://sensirion.com/media/documents/5FE8673C/61E96F50/Sens...
As others have said, if correctly installed you should not have any furnace exhaust indoors.
You should _always_ have at least a Carbon Monoxide alarm (CO) installed in the furnace room. If there is no monoxide leak it's unlikely that other particulates are escaping. The CO alarm should be installed in your furnace room irrespective of whatever sensor analytics you would like to add for your investigate.