We boast experience and versatility

Sem’s Duct Cleaning is your go-to company for commercial and industrial air duct cleaning in Thornhill and surrounding areas. With 3 decades of experience, trained professionals, and reliable equipment, we can provide you with:

  • Thermostat assessment
  • Leak identification
  • Humidifier & heater inspection
  • Airflow testing
  • Air filters check-up
  • General equipment assessment

Rely on us to keep your workspace healthy and clean.

Reach out to our specialists at (647) 476-2711

Why commercial air duct cleaning can be useful to your business

Reduced energy expenses

Increase energy-efficiency with our detailed HVAC system check-ups. If you maintain and clean your air ducts regularly, you’ll save on electricity bills.

Improved indoor air quality

Opting for industrial air duct cleaning will improve the air quality in your facility ensuring you and your employees work in a better environment.

Protects your equipment

Cleaning your HVAC system will save your computers and industrial machinery from overheating and other malfunctions.

Minimized repair costs

Avoid sudden and costly repairs by maintaining your HVAC system with the help of our skilled and experienced professionals.

Enjoy the perks of our industrial duct cleaning in Thornhill


Hassle-free booking

Since we value your time we’ve tailored a user-friendly online form to book your commercial duct cleaning in no time.


Purpose-built methods

We use our reliable methods and equipment to carefully examine your system and prepare a customized plan.


Capable experts

Our well-versed and seasoned specials have the necessary skills to thoroughly check and clean your HVAC system.


Air pressure cleaning

We use negative air pressure and 8″-diameter suction hoses so our Truck-Vac can deal with debris and prevent any damage to your vents.

commercial Sem's duct cleaning
Toronto Residential Air Duct Cleaning _ How We Work _ Best in GTA

Scrub clean

Our quality 300psi scrubbing tools will successfully clean dust and debris that’s stuck inside your HVAC system.


Fair pricing

Our pricing system is transparent and budget-friendly. You can easily get a quote on our accessible site.


Knowledge and skills

Our team is capable and well-versed in their trade and can provide you with efficient solutions to your requirements.


Modern hardware

We use only time-tested equipment to ensure rapid and quality services for your peace of mind.


Broad service area

Our commercial duct cleaning is available in Thornhill and the surrounding communities.

We serve various properties, including:

  • Houses
  • Rentals
  • Apartments
  • Cabins
  • Freshly renovated spaces
  • Condos

*If your type of facility doesn’t fall into any of the categories on the list, feel free to contact us and we’ll try to assist you.

Our team for commercial air duct cleaning offers:

  • Carpet cleaning
  • Centralized vacuum cleaning

Get your industrial air duct cleaning in Thornhill today.

Reach out to our technicians at (647) 476-2711.

Frequently Asked Questions

We tend to underestimate the importance of clean air ducts. Air constantly moves through them, purifying the filthy air from the outside which is why they’re susceptible to dust, dirt, and various harmful particles. Therefore, it’s important for them to be regularly cleaned and maintained. Opting for our commercial duct cleaning in Thornhill and the surrounding areas will improve the efficiency of your HVAC system and ensure your workspace is healthy in the long run.

There are several signs that can help you detect mold in your air ducts:

  • A mildew-like musty odor
  • Black dust around vents
  • Visible mold (a sign of serious infestation)
  • Coughing and sneezing
  • Allergy-like symptoms (runny nose, watering eyes, rashes)
  • Nausea, fatigue, dizziness, headaches when inside

If you notice any of these signs inside your facility, it’s advisable to opt for efficient industrial air duct cleaning in Thornhill and the area.

Mold tends to grow in a dark and moist environment that is hard to reach, and air ducts meet these criteria. This is the reason why mold is common inside and around the HVAC systems. If you want to make sure you’ve prevented the appearance of mold or you need to fight it off, rely on our commercial air duct cleaning in Thornhill and the region.

Knowing if the air quality in your facility is reduced can help you take the necessary steps to solve this problem:

  • Unpleasant odor
  • Dust buildup
  • Coughing
  • Difficulty breathing
  • Sneezing
  • Allergic reactions
  • Dry skin and irritation
  • Headaches
  • Nausea

To ensure that your working environment is a fresh and healthy one, hire us for detail-oriented and trusted industrial air cleaning in Thornhill and the nearby areas.

Sem’s Duct Cleaning handle duct systems in various residential, commercial, and industrial facilities. Our seasoned and well-trained technicians have almost 3 decades of experience and the necessary skills for thorough and successful commercial duct cleanings in Toronto. Apart from that, you can rely on them if you need:

We’re devoted to providing excellent service and we’ll go the extra mile to find solutions to your requirements. If you live near the Thornlea Secondary School or around Westmount Collegiate Institute and the area, visit our user-friendly site and request an estimate today.

View our residential 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.