Signs of mold in air ducts
Common signs include musty odors, visible black spots, and increased allergies. In Columbia, the rule for addressing this is: A permit is mandatory for residential HVAC work, specifically for replacing gas or oil fired systems or when pursuing a geothermal tax credit..
Cleaning and removal requirements
| Permit required for cleaning | Yes, an HVAC permit is required for replacing gas or oil fired equipment, or when seeking a geothermal tax credit. |
|---|---|
| Issuing office | Howard County - Department of Inspections, Licenses, Permits |
What to do next
No company takes requests through this site for Columbia yet: the facts above and the sources below are what there is to go on.