A few months ago, the daughter of one of our clients in Ahuntsic called us, worried. Her 78-year-old mother was coughing constantly in her condo, especially in the morning.
The doctors had checked everything—lungs, allergies, asthma. Nothing out of the ordinary for his age.
When we inspected the ventilation system in our condo, we found ducts that hadn't been cleaned in 15 years, dust buildup in the return air vents, and a completely clogged air exchanger.
Three weeks after the cleaning, the cough had almost gone away.
In Montreal, seniors make up about 18% of the population—and that number is rising every year. In 2025, there were about 20 days of poor air quality, often caused by wildfires and urban smog.
Levels of fine particulate matter (PM2.5) regularly exceed 1.8 times the standards recommended by the World Health Organization.
For older adults, breathing this air—both outdoors and indoors—has real health consequences. Here’s what you need to know to protect your loved ones or yourself.
Why Older Adults Are More Vulnerable to Air Pollution
Aging is normal. But it also changes the way your body reacts to pollution.
Aging, the Heart, and the Lungs: Increased Vulnerability
As we age, lung capacity naturally decreases. The tiny air sacs in the lungs (alveoli) lose their elasticity. The immune system slows down.
The result? Pollutants that have little effect on a 40-year-old can cause significant harm to a 70-year-old.
According to data from the INSPQ, as reported by Le Devoir, seniors aged 65 and older have a 50% higher risk of respiratory morbidity during episodes of poor air quality compared to younger adults.
Cardiovascular diseases—which are already more common with age—are exacerbated by exposure to fine particulate matter. The heart has to work harder to compensate for the lack of oxygen.
A study by Alzheimer Canada has even shown that prolonged exposure to air pollution increases the risk of dementia by 10% among older adults.
It's not just a matter of comfort. It's a matter of long-term health.
Urban Pollution and Inequality in Montreal
Not all older adults are at the same level of risk.
Low-income older adults, who often live in older housing and in more densely populated neighborhoods, are exposed to pollution levels about twice as high as those in the suburbs.
Central neighborhoods such as Ahuntsic, Villeray, and Hochelaga have more car traffic, fewer green spaces, and older buildings with inadequate ventilation.
This environmental inequality directly affects the health of the most vulnerable seniors—those who already have fewer resources to protect themselves.
Smog, wildfires, and climate change: a growing reality in Montreal
Air quality in Montreal is getting worse. This is well-documented and measurable.
More polluted summers, longer seasons
The summer of 2025 saw a 20 to 30% increase in air pollution compared to 2024, largely caused by wildfires that are starting earlier and burning longer.
According to IQAir, Montreal ranked among the world’s top 10 most polluted cities on several days in June and July 2025—a situation that would have been unthinkable 10 years ago.
Smog alerts have become almost routine during the summer. For seniors with respiratory or heart problems, each episode poses a risk.
Fine and Ultrafine Particles: The Invisible Danger
PM2.5 particles—which are so fine that they penetrate deep into the lungs and even into the bloodstream—are particularly dangerous.
They cause inflammation, affect the heart, reduce lung function, and can even cross the blood-brain barrier and affect cognition.
According to recent estimates, wildfires have caused approximately 1,100 premature deaths per year in the Montreal-Toronto corridor due to exposure to fine particulate matter.
For older adults who are already frail, breathing this air for days or weeks could be the trigger that leads to hospitalization.
Indoor Air Quality and Older Adults: An Often Underestimated Risk
There's a lot of talk about outdoor pollution. But the air inside the house can be even worse.
Why Indoor Air Can Be Worse Than Outdoor Air
Without adequate ventilation, indoor air can be 2 to 5 times more polluted than outdoor air, according to the EPA.
During the Montreal winter, we seal everything up tight for six months. Windows are sealed, doors are caulked, and there’s no air circulation.
Contaminants accumulate: dust, dust mites, mold, volatile organic compounds (VOCs) from household products, and nitrogen dioxide (NO₂) from combustion appliances.
For an elderly person who spends 90% of their time indoors—especially in the winter—this constant exposure to stale air has real consequences.
Apartments, condos, and older homes
Many seniors in Montreal live in buildings constructed before 1980, which often lack adequate mechanical ventilation systems.
According to industry estimates, only about 25% of homes occupied by seniors in Montreal have a functional and well-maintained air exchanger.
Senior living facilities—even the newest ones—sometimes have poorly balanced central ventilation systems that create areas of stagnant air.
We regularly encounter problems in these environments:
- Dust buildup in ducts that have never been cleaned
- Mold in poorly ventilated bathrooms and kitchens
- NO₂ Leaks from Gas Heaters
- Persistent odors from household cleaning products and cooking
Have your home's air quality checked—no obligation — A simple inspection can reveal hidden problems.
Facts vs. Myths About Air Quality for Seniors
There are a lot of misconceptions out there. Let's set the record straight.
What Science Confirms
Fact #1: Air pollution is directly linked to dementia, asthma, and mortality among older adults.
This isn't just a theory. It's backed by hundreds of studies. Chronic exposure to fine particulate matter accelerates cognitive decline and increases the risk of cardiovascular disease.
Fact #2: Older adults are the group most at risk during episodes of poor air quality.
More than just children, more than just healthy adults. As the respiratory and cardiovascular systems age, they become less resistant to pollutants.
Fact #3: Improving indoor air quality measurably reduces respiratory symptoms.
When you clean the ducts, install better filtration, or improve ventilation, the symptoms subside. It's not magic—it's just common sense.
Common Myths in Quebec
Myth #1: «Indoor air is always safe if the house is clean.»
False. You can mop the floor every day and still have poor indoor air quality if your ventilation system isn't working properly.
Invisible contaminants—VOCs, fine particles, mold spores—are dispersed in the air, not on the floors.
Myth #2: «Older adults need less fresh air than younger people.»
That's completely false. Older adults need just as much, if not more, fresh air because their lungs are less efficient.
Poor air quality exacerbates existing respiratory problems.
Myth #3: «Short-term episodes of pollution have no impact.»
False. Even a few hours of exposure to high levels of PM2.5 can trigger cardiac events in vulnerable individuals.
The effects are cumulative. Each episode puts additional strain on the cardiovascular system.
What Concrete Solutions Are There to Protect Seniors in Montreal?
Improving air quality isn't complicated or expensive. Here's what really works.
Ventilation, Air Exchangers, and Maintenance
Make sure the ventilation is working
If you have an air exchanger (HRV/ERV), make sure it’s actually running. Many are installed but never used, or have been turned off for years.
An air exchanger refreshes the indoor air while recovering up to 80% of heat. That’s exactly what you need to keep the air fresh without wasting energy in the winter.
Clean existing systems
Dirty ducts recirculate dust, allergens, and contaminants. Professional cleaning removes these buildup and immediately improves air quality.
For older adults with respiratory problems, it’s often a simple procedure that makes a big difference.
Change the filters regularly
A MERV 11 or 13 filter captures many more fine particles than a basic filter. Replace it at least every 3 months—more often if you live near a busy street.
When a ventilation inspection is necessary
Here are the situations when it's really worth having the system inspected:
- Persistent symptoms Chronic cough, shortness of breath, and congestion that improve when the person leaves the house? That’s a clear sign that indoor air quality is a problem.
- Odors and Excessive Dust Musty or stale odors, or a rapid buildup of dust even after cleaning.
- Residences that have not been recently maintained If the ducts have never been cleaned or the air exchanger has never been serviced since installation, now is the time.
- Older houses or condos Buildings constructed before 1990 without upgraded ventilation systems.
- Request a free inspection to find out if any improvements are needed — We show you exactly what's happening in your system.
Costs and Accessibility of IAQ Solutions in Montreal
Let's talk about the budget. Improving air quality shouldn't be out of reach.
A professional indoor air quality test costs about 500$ and measures particulate matter, humidity, CO2, VOCs, and other pollutants.
It's useful for documenting a problem, but it's not always necessary as a first step.
Cleaning and maintenance of existing systems—ventilation ducts, air exchangers, filters—cost between 350$ and 800$, depending on the size and condition of the system.
It is an affordable interim solution that often improves the situation without requiring a major investment.
To install a new air exchanger, expect to spend between 2,000$ and 4,000$, depending on the complexity of the project. It’s an investment, but one that pays off in terms of comfort, health, and energy savings.
Unfortunately, there are currently few grants specifically for indoor air quality in Quebec, except as part of broader energy-efficient renovation programs.
Check with your local municipality and Hydro-Québec—programs change regularly.
Why Choose Vortex Air Ventilation for Seniors
We understand the specific needs of seniors because we work with families who care for them every week.
At Vortex Air, our approach is people-centered and not alarmist.
We always start with a free inspection. We show you exactly what’s inside the ducts and clearly explain whether any improvements are needed.
If your systems are in good condition, we'll tell you so honestly. We don't sell unnecessary services just to make a sale.
Our team of more than five INVC-certified technicians is trained to work in senior living communities, condos, and single-family homes. We stick to the schedule, minimize disruption, and explain each step.
We are in the process of obtaining NADCA certification, which confirms our commitment to industry best practices.
Mohamed and Omar, our co-owners, personally oversee service calls for elderly or vulnerable clients. You’ll be speaking with the actual decision-makers, not with an employee who has no authority.
We are open 7 days a week, from 7 a.m. to 9 p.m., to accommodate the schedules of families and caregivers.
With more than 500 satisfied customers in the Montreal area, we have built our reputation on honest service and a focus on our customers’ actual needs.
Talk to a local expert, with no pressure — Contact us at 514-214-7492 or visit vortexair.ca.
FAQ – Air Quality and the Health of Seniors in Montreal
Does smog really affect dementia?
Recent research suggests a real link.
Long-term exposure to PM2.5 fine particulate matter is associated with an increased risk of dementia and cognitive decline among older adults.
That's not the only factor—genetics, lifestyle, and other factors also play a role. But air pollution is a significant contributor to the problem.
How can you tell if indoor air quality is a problem?
Keep an eye out for symptoms that appear or get worse at home.
A persistent cough, congestion, headaches, and extreme fatigue that improve when you go outside? That’s a clear sign.
Musty odors, dust building up quickly, excessive condensation on the windows? Your ventilation system is probably not working properly.
A camera inspection reveals exactly what's going on inside your ducts.
What should you do when a smog advisory is issued?
Stay indoors as much as possible, especially during peak hours (midday).
Close the windows and doors to keep polluted air from coming in.
Use your air conditioner or air exchanger with a good filter to keep the indoor air clean.
Avoid intense physical activities that cause you to breathe more deeply.
If you have respiratory or heart-related symptoms, seek medical attention right away.
Can a poorly maintained ventilation system be harmful?
Absolutely.
Dirty ducts recirculate dust, allergens, and mold. A clogged air exchanger can even become a source of contamination instead of improving air quality.
An improperly balanced system can create negative pressure that draws pollutants from the basement or garage.
Regular maintenance isn't just recommended—it's necessary for the system to work properly.
How often should the systems be checked?
For older adults living alone or in a senior living facility, the following is recommended:
- Change the filters every 2 to 3 months
- Clean the air exchanger once a year
- Thorough inspection of the ducts every 3 to 4 years
- Professional duct cleaning if symptoms appear or if it has been more than 5 years
These frequencies can be adjusted based on one's health and environment.
Do portable air purifiers really help?
They can be helpful as a supplement, but they are no substitute for proper ventilation.
An air purifier with a HEPA filter captures particles in a room, but it doesn't bring in fresh air from outside.
For seniors, it's useful in the bedroom or living room, especially during smog episodes, but it should be used in addition to proper ventilation, not as a replacement for it.
Are there any financial assistance programs in Quebec?
Currently, there are few specific programs focused on indoor air quality.
Some energy-efficient renovation programs include components designed to improve ventilation. Rénoclimat, for example, may cover part of the cost of installing an air exchanger.
You should also check with your CLSC or local community organization—some offer support for low-income seniors.
Conclusion — Breathing Easily at Any Age
Growing older should go hand in hand with wisdom and peace of mind—not with constant worry about the quality of the air we breathe.
Your lungs have been working hard your whole life. They deserve to breathe clean air, especially now.
Whether you’re a senior concerned about your own health or a child who wants to protect your parents, improving the air quality at home is one of the most concrete steps you can take.
It's not complicated. It starts with knowing exactly what condition your ventilation systems are in.
At Vortex Air, we've been helping seniors and their families breathe easier for over 10 years in the Montreal area.
We understand your concerns, we respect your pace, and we explain everything clearly without using intimidating technical jargon.
If you're wondering whether the air quality in your home or your parents' home could be improved, we can give you a clear answer after a free inspection.
Ask a question on behalf of a loved one — Call us at 514-214-7492 (available 24/7) or visit vortexair.ca.
Because breathing easily is a right at any age.
