We had one of these installed in the last couple of years and love it. We wanted to keep our CO2 lower, without leaving windows open and introducing dust/whatnot. Works well quantitatively and qualitatively.
FYI the "industry term" for these is an ERV or Energy Recovery Ventilator. (I think I've seen them referred to as Enthalpy Recovery Ventilator -- but I assume that fell out of favor since it's too pedantic for most people heh.)
If you get one, one tip is to ensure the air inlet is covered with a fine mesh screen. This cut the number in bugs in the filter 95%+. Also you can upgrade the filter from what's included to MERV13 or whatnot for better incoming air filtration.
I live in a large apartment (3 adults, 2 children to 1700 square feet). Recently I bought a good CO2 meter (Aranet4) and I really discovered how much you have to ventilate to keep CO2 levels under 1000ppm.
I sort of knew this for a long time and that's why I, for example, always sleep by an open window. But knowing it is one and actually seeing a completely different thing.
So this caused me to start thinking about installing one or more of these boxes in my apartment.
FYI the "industry term" for these is an ERV or Energy Recovery Ventilator. (I think I've seen them referred to as Enthalpy Recovery Ventilator -- but I assume that fell out of favor since it's too pedantic for most people heh.)
If you get one, one tip is to ensure the air inlet is covered with a fine mesh screen. This cut the number in bugs in the filter 95%+. Also you can upgrade the filter from what's included to MERV13 or whatnot for better incoming air filtration.