Fire extinguishers and first aid kits should be shown to the technician for his safety. Information about emergency contacts should also be provided.
The process of duct cleaning can be noisy. It is advised to conduct this procedure when most family members are not present.
Clear the work area. If the technician is installing a furnace or air conditioner, ask how much room will be needed around each register in the air vent. It is advisable to prepare these areas beforehand.
It's a good idea to walk through your house before cleaning to decide where protective covers like corner and drop guards will be installed. In addition, it is important to review the HVAC, how it will be cleaned, and its accessibility.