A NADCA Certified Air Duct Cleaning Company, An Authorized Aeroseal Dealer, A Licensed TSSA HVAC Contractor
A NADCA Certified Air Duct Cleaning Company, An Authorized Aeroseal Dealer, A Licensed TSSA HVAC Contractor


DAVESDUCTS is committed to the highest standard of improving your Indoor Air Quality and is a proud member of the National Air Duct Cleaners Association; completing certifications in Ventilation Maintenance Technician, Air Systems Cleaning Specialists, Ventilation Systems Mold Remediator and Certified Ventilation Inspector programs. We are dedicated to ensure that HVAC systems are assessed, cleaned and restored in a safe and efficient manner so that you, your employees and your family can breathe easier!  All NADCA certified technicians are listed on NADCA’s official directory, make sure the technicians that do the actual work hold their OWN NADCA certifications.

  • ASCS Certification

    Air Systems Cleaning Specialist (ASCS) certification signifies a high level of professionalism in the HVAC cleaning industry. Certification demonstrates the requisite knowledge of HVAC system cleaning, NADCA standards, OSHA regulations and more. ASCS specialists assess, restore and maintain HVAC systems and perform cleaning and mold remediation. We have eight ASCS Certified Technicians on staff.

  • CVI Certification

    Certified Ventilation Inspector (CVI) certification permits individuals to assess the cleanliness and physical condition of a commercial building’s HVAC system. HVAC inspectors are trained to determine whether a system is contaminated, or if performance is compromised. The course is designed for HVAC system cleaners, facilities managers, industrial hygienists and building inspectors. We have six CVI Certified Technicians on staff.

  • VMT Certification

    The Ventilation Maintenance Technician (VMT) certification from NADCA is a job skill training program for entry-level field technicians. The course is designed to help new HVAC cleaning technicians develop the knowledge and skills needed to provide the high quality of service for which NADCA members are known. The VMT program is consistent with NADCA standards and guidelines. We have nine VMT Certified Technicians on staff.


As a certified member of the National Air Duct Cleaner’s Association; we are required to abide by a strict code of ethics which states what we must do:

We will serve our customers with integrity and competence.
We will perform our work using source removal methods. In order to prevent the delivery of airborne pollutants into indoor air spaces through HVAC ductwork, we will remove the dust and other contaminants from the system. Thus, we pledge to administer source removal methods, cleaning the system ductwork as thoroughly as possible, before applying any coatings or treatments, including deodorizers, disinfectants, and/or sealants.
We will be honest and forthright in our advertising.
We will provide our clients with accurate inspections and evaluations of the cleanliness and physical condition of their HVAC systems, using this information to determine the type of cleaning and maintenance services required, if any.
We will provide only necessary and desired services to our clients, and will not use furnace/air duct cleaning as a means of selling unnecessary or unwanted products or services.
We will provide services only after completing the necessary bonding and licensing procedures.
We will use the services and products of those who possess specialized skills, tools, or trades not possessed by us when circumstances call for work to be done which we are unable to perform.
We will stay abreast of new developments in technology, tools of the trade, building codes, the Uniform Mechanical Code, and any other codes or information that directly affects our work.
We will require that all employees of our firm practice furnace/air duct cleaning in accordance with NADCA Guidelines and the Code of Ethics.
We will perform our services in accordance with the current published standards of the Association. If we are unable to clean in accordance with NADCA standards, we agree to disclose this limitation to our customers at the point of sale, in advance of any cleaning.


NADCA: The HVAC Inspection, Maintenance and Restoration Association, otherwise known as the National Air Duct Cleaners Association (NADCA), was formed in 1989 as a non-profit association of companies engaged in the cleaning of HVAC systems. Its mission was to promote source removal as the only acceptable method of cleaning and to establish industry standards for the association.

NADCA has expanded its mission to include the representation of qualified companies engaged in the inspection, maintenance and restoration of HVAC systems, and to assist its members in providing high quality service to their customers. The goal of the association is for its members to be the number one source for consumers and other entities seeking HVAC inspection, maintenance and restoration services, and air duct cleaning.


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DAVESDUCTS | HVAC | Duct Cleaning | Duct Sealing | HEPA Filtration Toronto