HVAC (Heating, Ventilating, Air Conditioning) System Cleaning
Industrial, Institutional and Hospitals

commercial HVAC system

Your heating ventilation and air conditioning system is a complex system that keeps your building and occupants comfortable. Cleaning the HVAC systems in a commercial environment complex. Timing and having the right number of technicians on site is key to the success of a commercial air duct cleaning project. Air-Vac is ready for any size of commercial duct cleaning project at any time of day. Air-Vac has cleaned HVAC systems in Hospitals, Schools, Institutions, Laboratories, Prisons, Churches, and office towers. No job is too big or small.

The periodic cleaning of HVAC systems may be necessary to ensure delivery of acceptable air to the indoor environment. Cleaning may be required on older systems that have not been properly maintained, damaged systems, or in special cases such as following extensive indoor or outdoor construction activities. Dirty fans, coils and ductwork reduce the airflow in a HVAC system, which in turn increases the cost to heat or cool the building. The cost to have the HVAC system professionally cleaned can easily offset the extra expense for heating and cooling. Request a quote today.

The UCIAQ Committee recommends hiring a certified and trained contractor to perform HVAC system cleaning. Contractors should use accepted industry standards such as those outlined by the Association of Specialists in Cleaning and Restoration (ASCR), the National Air Duct Cleaners Association (NADCA), and the North American Insulation Manufacturers Association (NAIMA). Although in-house facilities or custodial services may perform limited HVAC system cleaning activities (ie. removal of particulate debris from diffusers, cleaning and repairing small localized duct damage), specialized expertise, skill and experience is required to properly clean and restore an entire HVAC system to optimal performance.

HVAC systems should be cleaned when a visual inspection indicates excessive particulate debris or microbiological growth on any interior surfaces. A fibre optic system or video inspection system is recommended to document the condition of the system both before and after any cleaning. A limited amount of adhered dust is expected on the inside surfaces of HVAC systems and may not indicate a problem. Obvious problems that require cleaning and restoration would include visible microbiological contamination, significant amounts of particulate debris coming out of supply ducts, or deteriorated fibreglass insulation that was contaminating the supply air. In all cases, the source or cause of particulate contamination or microbiological proliferation must be determined and corrected prior to system cleaning.

Mechanical techniques are useful to clean certain HVAC components including ductwork, fan components, diffusers, dampers, and internal surfaces of the air-handling unit. When using mechanical cleaning methods, strict controls such as physical barriers, devices equipped with HEPA filtered exhaust, and system negative pressure must be used to contain and collect debris. Mechanical cleaning methods incorporate techniques to agitate and dislodge material as well as contain and remove it. Agitation devices may include power brushes, pressurized air and water systems, as well as hand tools such as brushes. Collection of dislodged particulate debris is achieved by vacuums. A vacuum collection device with an appropriate capture velocity should be connected to a service opening and operated continuously to collect material as it is dislodged. In certain areas of the HVAC system, direct contact vacuuming with a brush may be used to remove material from contaminated surfaces.

When using mechanical cleaning techniques, care must be taken to avoid damaging insulated or lined ductwork. Fiberglass insulated components should be cleaned using HEPA filtered exhaust equipment while the system is maintained under negative pressure. Fibrous glass insulated materials identified as damaged prior to or following system cleaning should be identified and replaced. Potential damage to fibrous glass insulation materials includes delaminating, friable material, fungal growth, or damp, wet material. If fiberglass insulation material must be replaced, all replacement materials and repair work must conform to applicable industry standards and codes.

Trust Air-Vac Services to professionally clean all components of this system. Fans, coils, dampers, diffusers, grills and attached ductwork all become contaminated from time to time. Is it time for your system to be cleaned? Request a quote today.

Customer Testimonial:
Thank you very much for all of your hard work and service this past year. My Strata Councils have all been very impressed with your service and pricing for the dryer vent cleaning.
- Danny, Peak Property Management Inc.

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