SURVEY
Inspect access conditions
Confirm fan hinges and restraints, flexible wiring, safe roof access, duct panels and weather conditions before equipment is opened.
CONTROL
Protect roof and electrical components
Cleaning should contain grease and wash water while preventing damage to roofing, fan wiring and adjacent equipment.
- Fan disconnect and wiring
- Hinge and restraint
- Roof curb and flashing
- Grease containment media
- Duct access openings
DEFECTS
Separate cleaning from repair
A cleaner can document loose wiring, worn belts, damaged hinges or roof issues; appropriate qualified trades should quote repairs.
FAQ
Operational questions
Will cleaning improve airflow?
Removing buildup may help system condition, but airflow problems can involve design, makeup air or mechanical defects outside the cleaning scope.
What if the duct lacks access?
The provider should document unreachable sections and explain whether properly listed access is needed.