I wonder if there's a similar, cheap way to measure air quality? I live in Houston, where air quality is highly dependent on the movement of air with the tides. When the ocean air mass moves ashore, air quality improves, and when air is pulled from the land over the ocean, air quality tends to decrease. I'd like to build a ventilation system that maximizes air intake when the air quality is good. I wouldn't have to measure all pollutants. One or two would probably suffice. (NOX)?
I have also seen "odor sensors" on air filters. But your best bet is probably to suck air into your house through a good filter, like: http://www.air-n-water.com/product/healthproplus.html (which has a duct kit so you can put your intake outside). Then the air you are breathing is always clean.
I thought about this as well but I was thinking about tapping into the mainline to the house as well. Any ideas about the feasibility of measuring at that point? (Would be helpful for catching slow leaks, garden applications etc.)
