Anybody know of a good air purifier?

 

I get the best fresh air in the middle of a pine tree forest; that is as long as you aren't allergic or the trees aren't pollenating...

Love the fresh air smell of lobly pines. (Plus it's all natural.)

As far as somekind of mechanical or electrical purifier... sorry, I couldn't help you.

 

Home Depot (up here at least) sells Hepa filters that attach to your furnace. They however are not cheap - but anything good rarely ever is.

There are also the electrostatic kind that also attach to your furnace.