If a technician has ever offered to “sanitize” your air ducts for an extra fee, you’ve probably wondered whether that’s

If you’ve searched this question, you’ve probably already gotten a call, a flyer, or a “$99 special” text from someone

Most residential HVAC systems have two plenums, and each serves a different purpose. The supply plenum sits on the output

Yes, air conditioning duct cleaning improves cooling efficiency in most homes with restricted airflow, though the size of the improvement

Sometimes, yes. Sometimes, not really. Dirty air ducts can make you sick, but it depends heavily on what’s actually built