514-316-2973
sales@airgreen.ca
AirGreen, a Montréal-based HVAC company, makes businesses in Montréal, Laval, Longueuil, the North Shore and the South Shore healthier, safer and more productive. In Québec, every mechanical ventilation system must be inspected and adjusted at least once a year (RSST, s. 104).
Above Health Canada’s target. Fresh air is no longer keeping up with the number of people.
Dust, mould, allergens and volatile organic compounds (VOCs) can cause allergies, asthma and more serious effects. They also weigh on staff performance, customer comfort and your operations. Pick a contaminant to see where it comes from and how we deal with it.
Allergies, asthma, irritation: indoor air is a recognized factor in health.
Dry air in winter, heavy air in summer, odours that linger: customers notice before you do.
Fatigue, absences, complaints, inspections: neglected ventilation ends up costing you.
Nine points make the difference between healthy air and stale air. Tap a number on the drawing.
CO2 tells you whether fresh air is keeping up with the number of people. Temperature and humidity tell you whether the air is too dry in winter or too humid in summer. On site, we take these readings at busy hours.
| Reading | What it means | Source |
|---|---|---|
| ≈ 400 ppm | Outdoor air | INSPQ |
| 1,000 ppm | Long-term limit, 24-hour average | Health Canada |
| 1,500 ppm | Above this: quick action in schools | Québec school network |
| 2,000 ppm | Correction required within the week in schools | Québec school network |
| 5,000 ppm | Maximum worker exposure over 8 hours | RSST, Schedule I |
ASHRAE 62.1 adds two needs together: air per person and air per floor area. Choose your type of space and the math happens live.
People estimated with the standard’s default density (5 per 1,000 sq. ft). Enter your actual number to refine.
A beauty salon needs four times the air per person of a meeting room. Tap a bar to use it in the calculation.
During operating hours, washrooms and shower rooms are vented outdoors. The regulation uses the higher of the two calculations, never less than 350 m³/h (RSST, s. 111).
Choose your sector: the rules, the typical issue and what we install appear, and the calculator above switches to your type of space.
A meeting room holds ten times more people per square foot than an open office, and winter dries out the whole floor.
CO2 climbs during meetings.
Fresh-air flow has to follow the real density of each room, not a floor average.
A full range of services to optimize the air in your commercial space and keep it healthy. Our RBQ licences cover ventilation (15.8), refrigeration (15.10) and electrical work (16).
It all starts with a complete assessment: we measure and analyze the air in your space to give you a clear picture.
Air purifiers and cleaners, filtration and UV light systems, chosen for your needs to remove pollutants from the air.
Design, installation and maintenance of systems that bring in fresh air continuously and remove pollutants.
The right humidity means comfort and healthy air: we prevent mould and excess moisture, and air that’s too dry in winter.
Regular HVAC maintenance keeps the system performing and working for your air quality.
In summer, air conditioning removes moisture from the air: properly tuned, it keeps the dew point under control.
| Task | AirGreen | Engineer | Hygienist or lab | Manager |
|---|---|---|---|---|
| CO2, temperature and humidity readings | ● | |||
| Ventilation, HRV, ERV, make-up air | ● | |||
| Purification and filtration | ● | |||
| Humidification and dehumidification | ● | |||
| Annual inspection and adjustment (s. 104) | ● | ○ | ||
| Drawings and specs for large systems | ○ | ● | ||
| Mould and VOC testing | ○ | ● | ||
| Asbestos before work (s. 69.3) | ○ | ● | ● | |
| Compliance and records (s. 4) | ○ | ● |
● responsible · ○ coordinated by AirGreen
Every space has its own air quality challenges and requirements. We work closely with you to understand your needs and concerns, then propose tailored solutions that improve the health and comfort of your premises, from the first appointment to the follow-up after service.
At 514 316-2973 or through the form: sector, floor area, what you’ve noticed.
Readings at busy hours, inspection of filters, air intakes and airflow. Free.
What needs to change, why, and the final price before any work.
Done by our technicians, outside your business hours when possible.
Airflow balancing, new readings, before-and-after report.
Follow-up after the service, then the inspection the regulation requires every year.
Answer based on what you know today. The dashboard works out your score, your next deadline and the exact list of what’s missing.
Ventilation inspected and adjusted in the last 12 months.
Filters maintained or replaced as needed.
Ventilation running during all business hours.
Air intakes away from exhausts, loading docks and parking.
Air exhausted by hoods and fans is replaced.
Washrooms and locker rooms vented outdoors.
Humidity at 20% or more in winter, measured with a hygrometer.
Asbestos located (sprayed-on insulation, pipe lagging) if the building predates 2000.
“An air purifier replaces ventilation.”
“The annual ventilation inspection is mandatory.”
“Ducts must be cleaned every year.”
“An office can drop below 20% humidity in winter.”
“At 1,200 ppm, CO2 is toxic.”
“A MERV 13 filter fits any unit.”
“You can shut the ventilation off during business hours to save money.”
“Before opening a ceiling in a 1985 building, you have to check for asbestos.”
Choosing an indoor air quality provider affects the health, comfort and productivity of your commercial space. Three reasons come up again and again.
Experienced refrigeration technicians and an RBQ licence in ventilation, refrigeration and electrical work: reliable solutions tailored to your business.
A simple, stress-free experience: free on-site estimate, quote within 24 hours, final offer before any work and follow-up after service.
Better air without wasting energy: our recovery ventilators reuse the heat from exhaust air, up to 65% sensible recovery efficiency on Venmar’s N series. See also Hydro-Québec’s Efficient Solutions program.
For large airflows, the unit is chosen after measuring, case by case. These models cover most offices and small businesses.
No question matches. Write to sales@airgreen.ca or call 514 316-2973: a technician will answer.
Indoor air quality assessment, air purification solutions (purifiers, air cleaners, filtration, UV systems), ventilation system design, installation and maintenance, humidity control, and regular maintenance and checks.
The Regulation respecting occupational health and safety (RSST): adequate ventilation (s. 101), minimum fresh-air changes from Schedule III (s. 103), annual inspection (s. 104). The employer must comply with these standards (s. 4).
At least once a year: every mechanical ventilation system must be inspected and adjusted, and filters maintained or replaced as needed (RSST, s. 104). We provide a dated report.
Health Canada recommends a long-term exposure limit of 1,000 ppm, averaged over 24 hours. CO2 is mainly an indicator: a high reading points to a lack of fresh air.
At least 20% during business hours in an office building or commercial establishment built or opened after December 19, 1979 (s. 119), measured with a psychrometer or hygrometer (s. 120).
For air-conditioned spaces, ASHRAE 62.1 limits the indoor dew point to 15 °C. Above that, condensation and mould threaten ducts and ceilings.
ASHRAE 62.1 adds a per-person rate and a per-area rate. Example: a 5,000 sq. ft office with 25 people needs 425 CFM of outdoor air. Use the calculator for your own space.
No. According to the Québec government, duct cleaning isn’t governed by any regulated practice and is only needed when an inspection shows it is.
No. Health Canada separates ventilating, which replaces indoor air with filtered outdoor air, from filtering. A purifier cleans the air in a room, it doesn’t bring in fresh air.
Health Canada recommends MERV 13 or higher filters when the system can handle the pressure drop, and a system that can switch to recirculation.
That testing is done by an industrial hygienist or an accredited lab. A building constructed before February 15, 1990 must have been inspected for sprayed-on asbestos insulation (RSST, s. 69.3). We then fix the ventilation and humidity.
The on-site estimate is free and the quote follows within 24 hours. You see the price of the work before we start.
Offices, stores, restaurants, salons, schools and daycares, warehouses, everywhere in Montréal, Laval, Longueuil, the North Shore and the South Shore.
With AirGreen, you have a commercial HVAC partner serving businesses in Montréal, Laval, Longueuil, the North Shore and the South Shore. Get in touch with our team: the on-site estimate is free and the quote follows within 24 hours.