Discover our broad range of professional services

Here at our company, we offer industrial and commercial air duct cleaning in Markham and other parts of the Greater Toronto Area. With over three decades of success in the industry, our team is composed of highly skilled and dedicated pros who can perform a wide array of services. You can count on us for:

  • Thermostat testing
  • Leak identification
  • Airflow evaluation
  • Equipment assessment
  • Compressor checking
  • Air filters inspection
  • System check for pest infestation
  • Heater & humidifier evaluation

Keep your place of business a healthy environment

Call us at (647) 476-2711

Take advantage of what we offer

Reduces costs for electricity

By opting to regularly maintain your HVAC system with regular air duct cleaning, you can save on costs on your electricity bills.

Maintain healthy air quality

Reduce the risk of allergens in your workspace and keep it a safe working environment for your employees.

Extend your HVAC lifespan

Schedule your regular industrial air duct cleaning and increase your HVAC’s durability and longevity.

Boost productivity

The air quality in your place of business plays a significant role in your employees’ health and productivity.

Put your trust in our experts in commercial & industrial air duct cleaning


Time-tested methods

Our methodical commercial air duct cleaning guarantees better airflow and healthier air quality throughout your workspace.


Blast vacuum

Our powerful Truck-Vac system can remove all dust particles from your heating and cooling vents.


Skilled and seasoned technicians

We boast a team of well-trained and experienced specialists who go out of their way to perform a swift and detailed service.


Air pressure cleaning

Our suction hoses and negative air pressure Truck-Vacuum can remove every bit of debris with maximum efficiency.

Toronto Residential Air Duct Cleaning _ How We Work
Toronto Residential Air Duct Cleaning _ How We Work _ Best in GTA

Scrub clean

We use cutting-edge 300psi scrubbing tools to clean the vents and reduce the number of allergens and contaminants.


No hidden fees

Schedule your appointment and request a quote on our user-friendly platform. Our prices come with no additional or hidden fees.


Experience and expertise

Each member of our staff is a well-trained and seasoned professional who can facilitate extensive cleans of your facility.


Tailored booking

Get a free quote or schedule your service of choice by picking your preferred date and time.


Available across the region

You can reach out to our technicians across Markham and the nearby areas for your industrial or commercial duct cleaning.

Our services are suitable for all types of buildings

  • Warehouses, facilities for industrial use and commercial premises
  • Commercial offices, skyscrapers, low-rise and ground floors
  • Post-renovation buildings, houses, flats and ground floor buildings
  • Hospitals and clinics, long-term care facilities
  • Supermarkets, bars, cafes, restaurants, department shops
  • Residential buildings, townhouses, low-rise buildings, houses, flats
  • Public schools, residential, primary, secondary schools, nurseries
  • Buildings, real estate, and rental homes

If you don’t see your type of building on our list, reach out to our team and we’ll find a solution to meet your needs.

Comprehensive commercial & industrial air duct cleaning in Markham & beyond

  • Commercial air duct cleaning
  • Post-renovation washing
  • Housing pipeline cleaning
  • Vent washing
  • Cleaning the vents in the air
  • Dust cleaning during summer
  • Dust cleaning during winter
  • Carpet cleaning
  • Centralized vacuum
  • Dryer duct washing

Preserve your industrial air ducts with our assistance

Contact our specialists at (647) 476-2711

Frequently Asked Questions

Commercial and industrial air duct cleaning is the removal process of built-up dust, dirt, and other debris that accumulates in air ducts. Regular maintenance is necessary to keep the air quality in these spaces healthy and safe. The cleaning process typically includes the following steps:

  • The professionals will inspect the ductwork and determine the best way to clean it. This may involve accessing the ducts from above or below, depending on their location and layout.
  • They will then use specialized equipment to clean the ducts. This equipment may include high-powered vacuums, brushes, and other tools.
  • The cleaners will also inspect and clean the registers and grilles that allow air to flow into the ducts. This helps to ensure that all of the dust and debris is removed from the system.
  • Finally, the experts will test the air quality in the space to make sure that it meets safety standards.

For a comprehensive clean of your system, reach out to our specialists and schedule your appointment.

When it comes to commercial and industrial air duct cleaning in Markham and the nearby areas, there are a few factors that will affect the final cost. The size of the building, the type of duct cleaning service, and the number of cleanings required per year all play a role in the overall costs.

Typically, industrial and commercial buildings will require more extensive work than residential ones. The average cost depends on the specific needs of your business. While some businesses may only need one full cleaning every few years, others may need multiple cleanings per year to ensure the air quality meets the standards. Reach out to our technicians, and we’ll visit your place of business to assess the space and give you an accurate estimate of the costs.

Industrial air duct cleaning can be a large-scale job, depending on the size and layout of the facility. But in most cases, a professional team can clean a system in just a few hours.

The first step is to inspect the system and identify any areas that need special attention. Then, the team will use powerful vacuums and brushes to clean out all the dirt, dust, and debris from the ducts. Finally, they will disinfect the system to kill any bacteria or mold that may be present.

For over 30 years, Sem’s Duct Cleaning has been conducting comprehensive commercial air duct cleanings to local clients in Toronto and across the region. Whether your place of business is near Markham Museum or closer to Milne Dam Conservation Park, you can expect optimum results and a clean system. Our award-winning team is available in other areas, including:

Reach out to our technicians today, or get a quote by filling out our user-friendly online form!

View our commercial service area

Give us a call to (647) 476-2711
or get an air duct cleaning quote online

Some of the services might not be available at all times. Please contact us for more information related to your specific HVAC cleaning needs.