Has the service provider sufficiently shown that duct work and plenums are clean? (Plenum is a space during which source or return air is mixed or moves; is often duct, joist space, attic and crawl spaces, or wall cavity.) Should you’re unsure if duct cleaning suits your process, talk to https://riverhovag.life3dblog.com/28686835/the-ultimate-guide-to-air-duct-cleaning