HVAC DUCT CLEANING SPECIFICATIONS

Wastewater Collection Administration and Training Buildings

2515 Guy N. Verger Blvd.

Tampa, Florida 33605

PROJECT DESCRIPTION

Provide cleaning services for the HVAC air distribution systems and associated components within the Wastewater Collection Administration and Training Buildings located at 2515 Guy N.

Verger Blvd., Tampa, Florida 33605.

A PDF copy of the Mechanical As-Built Drawings is provided for reference and use in preparing bids and performing the work. Contractors shall verify field conditions and quantities prior to commencing work.

PART 1 – GENERAL

1.01 SCOPE OF WORK

A. Furnish all labor, supervision, tools, equipment, materials, transportation, permits, and incidentals necessary to perform complete HVAC air distribution system cleaning in accordance with these specifications.

B. The work includes, but is not limited to, cleaning of:

1. Supply air ductwork.

2. Return air ductwork.

3. Air handling unit (AHU) components.

4. Fan housings and fan blades.

5. Heating and cooling coils.

6. Condensate drain pans where accessible.

7. Dampers and damper assemblies.

8. Registers, grilles, diffusers, and associated air devices.

9. Flexible ductwork.

10. Louvers and valve boxes associated with the HVAC system.

C. Create service openings as necessary to access ductwork and system components. Service openings shall be installed, reinforced, sealed, and restored in accordance with applicable industry standards and shall not impair the structural integrity, insulation value, air tightness, or operational performance of the HVAC system.

D. Remove dust, dirt, debris, microbial contamination, and other foreign matter from HVAC system components using source-removal cleaning methods.

E. Perform all work in a manner that prevents the release of contaminants into occupied spaces or adjacent areas.

F. Apply an EPA-registered fungistat/bacteriostat to coils, fan housings, fan blades, dampers, louvers, flexible ductwork, metal ductwork, and other HVAC components identified for treatment. Applications shall comply with manufacturer recommendations and current NADCA standards.

G. All work shall be performed after 5:30 PM on weekdays and/or during weekends unless otherwise approved by the Owner.

H. Once work has commenced, cleaning activities shall proceed on consecutive workdays until completion unless otherwise authorized by the Owner.

1.02 CONTRACTOR QUALIFICATIONS

A. The Contractor shall be regularly engaged in HVAC air duct cleaning services.

B. The Contractor shall maintain membership in the National Air Duct Cleaners Association (NADCA) or employ personnel certified by NADCA.

C. A certified Air Systems Cleaning Specialist (ASCS) shall supervise the work and be available during all phases of the project.

1.03 APPLICABLE STANDARDS

A. Perform all work in accordance with the latest editions of the following:

1. National Air Duct Cleaners Association (NADCA) ACR Standard.

2. NADCA Assessment, Cleaning, and Restoration (ACR) Standard.

3. Applicable Environmental Protection Agency (EPA) guidance.

4. Institute of Inspection Cleaning and Restoration Certification (IICRC) standards.

5. Occupational Safety and Health Administration (OSHA) regulations.

B. Comply with all applicable federal, state, local, and municipal codes and regulations.

1.04 SITE VISIT

A. A non-mandatory pre-bid site visit will be conducted on July 7, 2026, at 10:00 AM.

B. Contractors are encouraged to attend and familiarize themselves with existing site conditions prior to submitting a bid.

PART 2 – PRODUCTS AND EQUIPMENT

2.01 CLEANING EQUIPMENT

A. Utilize professional HVAC cleaning equipment specifically designed for duct cleaning applications.

B. Vacuum collection devices shall be equipped with HEPA filtration and maintained in proper operating condition.

C. Mechanical agitation devices, brushes, compressed-air tools, and other cleaning equipment shall be suitable for the duct construction and shall not damage HVAC components.

2.02 CHEMICAL TREATMENTS

A. Any fungistat, bacteriostat, disinfectant, or antimicrobial treatment shall be EPA registered for HVAC applications.

B. Product Safety Data Sheets (SDS) and technical data sheets shall be submitted to the Owner for review prior to application.

C. Sealants, encapsulants, coatings, or chemical biocides shall not be used unless specifically approved in writing by the Owner.

PART 3 – EXECUTION

3.01 PREPARATION

A. Verify existing conditions prior to commencing work.

B. Protect building finishes, furniture, equipment, electronics, and other property from dust, debris, and damage.

C. Coordinate all work activities with the Owner's representative.

D. Install temporary barriers, coverings, and containment systems as required to prevent migration of contaminants.

3.02 HVAC SYSTEM CLEANING

A. Clean all accessible supply and return air ductwork using source-removal methods.

B. Remove, clean, and reinstall all registers, grilles, diffusers, and associated air distribution devices.

C. Clean accessible HVAC components, including:

1. Fan blades.

2. Fan housings.

3. Dampers.

4. Louvers.

5. Heating coils.

6. Cooling coils.

7. Condensate drain pans.

8. Air handling unit interiors.

D. All debris removed from the system shall be collected and properly disposed of off-site in accordance with applicable regulations.

E. Cleaning methods shall not damage duct surfaces, insulation, HVAC equipment, or building finishes.

3.03 FUNGISTAT/BACTERIOSTAT APPLICATION

A. Following cleaning, apply approved fungistat/bacteriostat treatment to HVAC system components identified in Section 1.01(F).

B. Application shall be performed in strict accordance with manufacturer instructions, EPA requirements, and NADCA standards.

C. Overspray, drift, or migration of treatment materials into occupied spaces shall not be permitted.

3.04 INSPECTION AND VERIFICATION

A. All cleaned HVAC system components shall meet NADCA cleanliness verification requirements.

B. Upon completion, all duct surfaces shall be visibly clean and free of dust, debris, and foreign matter when viewed without magnification.

C. The Owner reserves the right to inspect any portion of the work prior to acceptance.

D. Contractor shall provide digital before-and-after photographs documenting representative duct sections, HVAC components, and completed work areas.

E. Any areas determined by the Owner to be inadequately cleaned shall be re-cleaned at no additional cost.

3.05 CLEANUP AND RESTORATION

A. Remove all waste materials, debris, temporary protections, and equipment from the premises upon completion of the work.

B. Restore all work areas to their original condition.

C. Repair any damage caused by the Contractor's operations at no additional cost to the Owner.

D. Leave all work areas in a clean, safe, and orderly condition acceptable to the Owner.

3.06 CLOSEOUT SUBMITTALS

Contractor shall provide the following upon completion of the project:

A. Before-and-after photographic documentation.

B. Copies of fungistat/bacteriostat product data sheets and Safety Data Sheets (SDS).

C. Written certification that the work was completed in accordance with NADCA ACR standards and these specifications.

D. Final report summarizing work performed, deficiencies identified, and corrective actions taken.