I have an old house (built circa 1957) and I have some concerns about hazardous particles in the air. The insulation appears to be cellulose, but I occasionally find trace amounts of fiber-like stuff when dusting the house. Also, I have had a chronic cough for years now, and though I have been unable to determine the root case I think cleaning up the air quality might be a good idea.
So, I was thinking about getting an air filter with a HEPA filter. I would be looking for a unit to go in a room, rather than a central air unit (we have radiant heating, not forced air).
Any suggestions on the best value stuff to get, or recommendations otherwise?