A move into duct-cleaning work is natural for HVAC contractors looking to expand their repertoire and add another source of revenue. The ability to clean ductwork and peer inside it via video cameras, ...

Air duct cleaning can be expensive and it may not improve indoor air quality in your home. Air duct cleaning typically costs about $270 to $500, with an average cost of $389. Your cost depends on the ...

Maintaining clean air ducts in your home seems like something you should do. But although air ducts do get dirty, air-quality experts consistently agree that ductwork cleanings provide no measurable ...

When workers from Penn Air, a test and balancing engineering firm founded in 1973, discovered a dirty duct that prevented them from getting an air balance reading, their business model changed forever ...