Frequently Asked Questions

Most HVAC professionals recommend duct cleaning every 3–5 years for an average home without unusual conditions. However, if you have pets, recently completed a renovation, moved into a home with unknown cleaning history, or are noticing visible dust from vents or unusual odours, more frequent cleaning may be appropriate.

Common signs include dust blowing from registers, a musty or stale smell when the furnace runs, visible debris around vents, increased household dust, and worsening allergy symptoms indoors. If you've never had your ducts cleaned or can't remember the last time, it's worth booking an assessment.

Our technicians connect a truck-mounted or portable vacuum system to your ductwork, then clean each supply and return line, all registers and grilles, and the main trunk line. Before-and-after photos are taken so you can see the difference.

In many situations, yes. Particularly after a renovation, if you have pets, if you've recently moved in, or if it's been many years since the last cleaning. We never pressure homeowners into service they don't need — we'll give you an honest assessment.

Duct cleaning removes debris that can restrict airflow through registers. Many customers report noticeable improvement in airflow after cleaning, particularly in rooms that previously felt underperforming.

A typical 3-bedroom, 2-storey home takes approximately 2–3 hours. Larger homes may take 3–4 hours or more.

Yes. Lint is highly flammable, and restricted dryer vents are one of the leading causes of residential fires in Canada. A clogged vent forces hot air and lint to build up inside the appliance and vent line, creating a fire hazard.

Most homes should have dryer vent cleaning done every 1–2 years. Households that run multiple loads daily, use a long vent run, or dry heavy items like blankets and pet bedding may benefit from more frequent cleaning.

Yes. A dryer that takes more than one full cycle to dry a normal load is a strong sign of restricted airflow. Beyond being inefficient, the extra heat and run time accelerates wear on the dryer and increases fire risk.

Yes, we service dryer vents in condo units, apartments, and multi-unit buildings. Please call to discuss your building's configuration.

Natural Resources Canada recommends R-50 to R-60 for most attics in Ontario's climate zone. Many older homes fall far below this level, which contributes to heat loss in winter and heat gain in summer.

Proper attic insulation reduces heat loss in winter and heat gain in summer, which means your furnace and AC don't have to work as hard. Many homeowners notice meaningful reductions in their heating and cooling costs after an insulation upgrade.

Not always. In many cases, new blown-in insulation can be added on top of existing insulation. However, if existing insulation is wet, contaminated, mold-affected, or damaged, removal first is recommended.

Ontario offers rebate programs for qualifying attic insulation upgrades through programs like Enbridge Home Efficiency Rebate and others. Eligibility typically requires a pre-upgrade home energy audit. We can guide you through the general process and help you prepare.

We install blown-in insulation — typically cellulose or fiberglass. Blown-in insulation fills irregular attic spaces well and provides excellent, consistent coverage.

An HRV (Heat Recovery Ventilator) exchanges stale indoor air for fresh outdoor air while recovering heat. The internal core accumulates dust, debris, and biological matter over time — cleaning restores its ability to function properly.

We recommend annual inspection and cleaning for most HRVs, typically in spring or fall. Homes with higher occupancy, pets, or heavy HRV use may benefit from more frequent service.

Yes. A clogged HRV core or filter reduces the system's air exchange rate, which can contribute to stale, humid, or increasingly stuffy indoor air — particularly in newer airtight homes that rely on the HRV for fresh air.

We service offices, retail spaces, restaurants, warehouses, manufacturing facilities, schools, daycares, medical clinics, multi-unit residential buildings, and large industrial properties.

Yes. We regularly schedule commercial cleanings in the evenings, early mornings, and on weekends to avoid disrupting normal business operations.

Yes. After commercial service, we provide a written report with before and after photos that can be retained for property management records, health & safety compliance, or tenant documentation.

Commercial systems vary significantly depending on the type of business, occupancy, and system usage. Offices may require cleaning every 3–5 years, while restaurants, industrial facilities, and high-occupancy buildings may need service more frequently.

Universal Duct Cleaning Inc. is a fully insured company. Please call us directly if you require documentation for your records.

Call us at 647.271.2656 or submit our online quote request form. We'll gather basic information about your home or building and provide a quote.

We serve Toronto, Brampton, Mississauga, Vaughan, Markham, Richmond Hill, Oakville, Burlington, Hamilton, Ajax, Pickering, Whitby, Oshawa, Aurora, Newmarket, Milton, Caledon, Etobicoke, North York, Scarborough, and surrounding communities. Call us if you're unsure.

Please call us at 647.271.2656 for information on available payment methods.

Clear access to all vents and registers throughout your home. Make sure someone is home during the service so our technician can access all areas. We'll take care of everything else.

We stand behind our work. If there's an issue with your service, contact us immediately and we'll work to make it right.