The NAT 5 Step Process

 

1
NAT will conduct a thorough video inspection of key areas of the HVAC system and report the findings.

  • HVAC Inspection for Indoor Air Quality Integrity (IAQ)
  • Robotic video inspection of key areas of the HVAC systems
  • Bacteria and fungi measurements in duct
  • Chemical analysis of the duct’s particulate matter
  • Filtration analysis
  • Conclusions and recommendations

2

 NAT will conduct air quality tests throughout the building. Once this is completed, the working technician will report the results and make all necessary recommendations to comply with A.S.H.R.A.E. Standards.

  • CO2, temperature and humidity testing in key areas over a 24 hour cycle
  • Bacteria and fungi testing in duct
  • Air flow tests at key registers and coils
  • When necessary we will coordinate volatile organic compounds (VOC) testing

3

 We will clean the entire HVAC system to National Air Duct Cleaning Association Standards (NADCA). These standards include the following:

  • Air handling units will be degreased & pressure washed
  • All supply and return ductwork will be cleaned utilizing robots and direct contact brushing, utilizing H.E.P.A. filtered vacuum units
  • Ductwork will be treated to eliminate all bacteria and fungi growth. Frayed interior insulation may be resealed with Mechanical Insulation Repair Coating to return the insulation to its original specifications
  • All supply and return registers will be cleaned
  • Before and after video and digital photo inspections to verify the cleaning process
  • All VAV boxes, reheat coils, controls, etc. will be hand cleaned

4

 We will submit a comprehensive final report outlining all analysis findings, laboratory test results, and recommendations. The final written report will include:

  • Video presentation or digital pictures
  • IAQ Certificate of Assurance

5

 As part of the service, NAT will annually inspect the building and report on the follwing:

  • HVAC contamination levels
  • Key air quality readings
  • Any HVAC IAQ deficiencies

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