Commercial Services
Certification:
With increased public awareness of indoor air quality (IAQ)
issues, the IAQ field has seen a corresponding demand for HVAC system cleaning
services. As a result of this demand and the growth of the HVAC cleaning
industry, the need for a credentialing system to recognize competent, qualified
HVAC system cleaning specialists.
Ductworks, Inc. technicians meet and exceed
in the following areas:
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Assessing
Problems: |
| Performing visual inspections: |
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- Types of inspection equipment.
- Sources of contamination.
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| Identifying problem conditions and possible solutions: |
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- Types of contaminants, pathways, and need for testing or
referral.
- Risks of contamination.
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| Referring to related trades, professions and disciplines: |
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- Roles of related trades/professions.
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Assessing
Mechanical Systems: |
| Demonstrating knowledge of HVAC systems: |
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- Dual duct systems.
- Low pressure systems.
- Medium pressure systems.
- High pressure systems.
- Split Systems.
- Furnaces.
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- Package Unit systems.
- Exhaust systems.
- VAV systems.
- Multi-zone systems.
- Mechanical blueprints.
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| Demonstrating knowledge of mechanical components: |
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- Coils.
- VAV(s).
- Ductwork.
- Diffusers/grills/registers.
- Drain lines and pans.
- Humidification devices.
- Dehumidification devices.
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- Fans.
- Mixing boxes.
- Dampers.
- Sound attenuators.
- Turning vanes.
- In-duct sensors.
- Filtration.
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Protecting
the Health and Safety of Employees, Building Occupants, and the Indoor
Environment: |
- OSHA standards.
- NADCA standards.
- Preparing and protecting the site.
- Indoor air quality.
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- Office furnishings.
- Electronic equipment.
- Fire safety and building security.
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Performing
the Cleaning: |
| Accessing and closing the system: |
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- Duct codes and standards (SMACNA, NAIMA, NADCA).
- Sheet metal.
- Ductboard.
- Fiber glass.
- Ceiling construction.
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- Vacuums.
- Pressure Washers.
- Steam Cleaners.
- Agitation Devices.
- Hand tools.
- Power tools.
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| Selecting materials, chemicals, and methods of
application: |
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- Coatings/Sealants.
- Biocides.
- Cleaning chemicals.
- Methods of chemical application.
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| Selecting Cleaning Methods: |
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- Negative air with agitation.
- Hand or contact vacuuming.
- Hand washing.
- Power washing.
- Steam cleaning.
- Brushing.
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| Verifying HVAC Cleanliness: |
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- NADCA standards.
- Visual inspection equipment.
- Test instruments
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