Questions to ask before hiring a duct cleaning service

• How much will it cost?

• Will there be an addition charge for anything?

• How long will the entire process take?

• Do you use powerful vacuums in conjunction with compressed air?

• Do you use contact tools, such as whips and brushes to dislodge dust and debris?

• Does your process clean the entire system, including the furnace and AC coils?

• Are you insured?

• How much experience does my service person have?