When does duct cleaning make sense?

Every home requires air duct cleaning at some point; however, there are several situations that can increase the need for it.

If there is visible mold growth inside hard surface, (e.g., sheet metal) ducts or on other components of your heating and cooling system.

If you are moving into a newly constructed house or following major renovations, duct cleaning will catch drywall dust, fibreglass pieces and sawdust.

If you are having trouble with furnace airflow, a duct cleaning can reveal significant blockages.

If you look in the return air registers and see an accumulation of debris in the duct below.

Are there any health benefits that come from duct cleaning?

Heating, ventilation, and air conditioning (HVAC) systems have been shown to act as a collection source for a variety of contaminants that have the potential to affect health, such as mold, fungi, bacteria, and very small particles of dust. The removal of such contaminants from the HVAC system and home should be considered as one component in an overall plan to improve indoor air quality.

Will duct cleaning reduce our home energy bills?

Research by the U.S. Environmental Protection Agency (EPA) has demonstrated that HVAC system cleaning may allow systems to run more efficiently by removing debris from sensitive mechanical operate components. Clean, efficient systems are less likely to break down, have a longer life span, and generally more effectively than dirty systems.

What is your duct cleaning process?

We employ the source removal method of cleaning. This process is the highest standard in the industry and is the only method endorsed by the National Air Duct Cleaners Association (NADCA). It requires placing the system under continuous negative pressure, through the use of a specialized, powerful vacuum. While the vacuum draws air through the system, special devices are inserted into the ducts to dislodge any debris that might be stuck to interior surfaces. The debris can then travel down the ducts to the vacuum, which removes it from the system and the home.

What preparations need to be made?

Make sure there is unrestricted access to the furnace, each room vent, and that furniture is not blocking the vents.

How long does the whole cleaning process take?

The amount of time it takes to clean a residential air duct system depends on many variables such as the size of the home, the number of systems and the extent of the contamination. A complete cleaning can take between 2 and 3 hours on an average sized home. Larger homes take longer or if the set-up of the equipment is difficult, however we are in your home until the job is completely finished. Any company that cleans your home in a short period of time is probably not doing a proper job.

How much does it cost?

Duct cleaning services range in cost. At Encore, we offer straightforward pricing so you know the price before any work is done. There are no surprises or hidden extra charges. We provide free, no-obligation estimates for residential duct cleaning over the phone after a few questions. The cost is determined by the size of the house and the type of service you require. For small commercial buildings, it is normally required for us to visit the site first to provide a free, no-obligation written estimate.

What methods of payment do you accept?

We accept cash, cheques, Visa and MasterCard.

How can we determine if the duct cleaning was effective?

You can determine if the air duct system cleaning was effective by inspecting the system before and after cleaning with our camera inspection system. We can also show you some of the debris as it is being removed.

How often should air duct systems be cleaned?

We recommend having your system cleaned every 1-2 years. Frequency of cleaning depends on several factors. Some of the things that may lead a home owner to consider more frequent cleaning include:

  • Smokers in the household
  • Any kinds of pets in the house
  • Water contamination or damage to the home or HVAC system
  • Residents with allergies or asthma who might benefit from a reduction in the amount of indoor air pollutants in the home’s HVAC system
  • After home renovations or remodelling
  • Prior to occupancy of a new home
  • Carpets in the home or popcorn ceiling
  • If you live near an airport or a busy road
  • More than two people live in the house


Central vacuum cleaning, professional cleaning of all vacuum lines and collection area, this procedure may increase suction power and also eliminate odours

Washroom exhaust fan cleaning, professional cleaning of the grille, fan, motor and vent pipe to remove dust buildup which can cause moisture damage to walls

Sanitization, we offer this service to you if you would like your house to have a very fresh pleasant scent which deodorizes the ducts after all the contaminants have been removed

Filteration , we offer a complete line of filters from basic, electrostatic, to HEPA filtration systems to accommodate your needs

Anything else I should know?

Not all air duct cleaning companies are the same. Beware of discount or blow-and-go duct cleaning companies that advertise very low prices, if it sounds too good to be true, then it is. Don’t get scammed by no quality low price jobs it’s a waste of your money. Some use harsh chemicals which could potentially make the indoor air quality much worse.

When choosing an air duct cleaner, avoid making your decision solely on the basis of price. The quality of the job should be your highest priority, because quality will determine your savings in energy costs, comfort and durability. At Encore, we provide the total cost and scope of the job before the work begins. We are insured and bonded for your peace of mind.

For any additional information or to book you appointment today, please call us at

Direct: 647-654-2367
Office: 905-275-1327

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