Never really though about it, but it makes sense. There's really only two "active ingredients" in an air purifier - the fan, which sucks up air and spits it through the filter, and the filter,...
Never really though about it, but it makes sense. There's really only two "active ingredients" in an air purifier - the fan, which sucks up air and spits it through the filter, and the filter, which extracts particulates out of the air.
Furthermore, all that really matters for effectiveness is volumetric flow through the filters - it doesn't matter if it's sealed, or any of that. Hence why the DIY Air Purifier works better even though it's just two hepa filters strapped onto a random box fan. It has almost twice the flow because there are two filters and the fan may be stronger.
tl;dr don't buy prebuilt air purifiers for your home
Instead, buy a fan that has the qualities you want and tape some filters to it. If you want a quieter purifier, a bigger fan can run at a lower RPM, or if you just want effectiveness in a small package, get a small fan with a high RPM.
Never really though about it, but it makes sense. There's really only two "active ingredients" in an air purifier - the fan, which sucks up air and spits it through the filter, and the filter, which extracts particulates out of the air.
Furthermore, all that really matters for effectiveness is volumetric flow through the filters - it doesn't matter if it's sealed, or any of that. Hence why the DIY Air Purifier works better even though it's just two hepa filters strapped onto a random box fan. It has almost twice the flow because there are two filters and the fan may be stronger.
tl;dr don't buy prebuilt air purifiers for your home
Instead, buy a fan that has the qualities you want and tape some filters to it. If you want a quieter purifier, a bigger fan can run at a lower RPM, or if you just want effectiveness in a small package, get a small fan with a high RPM.