Metal Duct Work Design: If the 'Comfort Survey' does not indicate HOT or COLD rooms the design is considered acceptable.
Uninsulated Metal Duct Work
Wrapping not recommended because of potential moisture issues complete ducting should be replaced.
Typical Age of metal duct work pictured is 20 to 35 years.
Condition: 1 of 5
Insulated Metal Duct Work
High probability of moisture and humidity issues complete duct system should be replaced.
Typical Age of metal duct work pictured is 20 to 40 years.
Condition: 1 of 5
Poorly Insulated Metal Duct Work
High probability of moisture and humidity problems, complete duct system. Should be replaced.
Typical age of metal duct work pictured 20 to 35 years.
Condition 1 of 5
Asbestos Insulated Metal Ducting
This is the most common form of asbestos insulated metalducting. This can be corrugated asbestos only ducting or metal ducting covered with corrugated asbestos.
Not Commonly found.
Condition 1 of 5
Properly Installed Metal Duct Work
This is an example of properly installed and insulated metal duct work.
Condition 5 of 5