What can be done to reduce dust emitted from a crawlspace-mounted central furnace?
The person experiences discomfort from dust emitted through wall registers. The use of a high-efficiency Space-Gard type furnace filter does not seem to help.
I would recommend that you have a smoke test performed on the unit and ductwork. This test will:
- pinpoint all leakage areas in the ducts and
- allow you or your contractor to seal them properly, thus
- stopping dust from being sucked into the ducts located in the crawlspace.
Also, have all of the ductwork cleaned thoroughly.
I also recommend having an electronic air cleaner with washable pre and post filters installed in place of the disposable filters.
For more information:
Read Randy Potter's Q&A "We get a lot of dust in our house. Where could the dust be coming from?"