On 8 Apr 2005 06:44:01 -0700, "stretch" wrote:

Anita,

A large part of what I do is measuring air flow and air balance in my
A/C contracting business. I do not recommend ANY pleated filters
unless you KNOW that you have adequate blower capacity to handle it.
Even the cheap pleateds are restrictive. Some electrostatic filters
are fair, some are worse than pleateds. Try A+2000 brand electrostatic
filters if your contractor has them, not available to DIY. But, if
ducts are shedding, a fliter will not stop that. Best bet is get ducts
replaced or lining removed and insulation put on outside of metal
ducts.

Stretch


This may be a commercial product idea. Invent a spray can product
that one can spray on a regular furnace filter to make the fibers
sticky to floating dust particles. Then we don't have to worry about
having changed the sizing or balance of the air flows. We may have
to change the filters more often but that's the whole idea. The
in-house dust get removed from the home permanently. If done often
enough we can then use regular filters again.