Air Filters Quebec

Air quality in Quebec

• Boreal wildfire smoke
• Winter wood-burning smoke
• Ragweed pollen
• Smelter & mill emissions
• Urban traffic
• Humid river valley summers

Quebec's air is shaped by its forests. The boreal belt that covers most of the province had a record wildfire season in 2023, and smoke from fires in the north and the Abitibi drifted south over Montreal, Quebec City and much of the Saint Lawrence valley for days at a time. Because these fires burn far from the cities, the smoke usually arrives thinned out but widespread, which is exactly the kind of fine PM2.5 haze that settles indoors and passes straight through basic fibreglass filters.

Closer to home, wood heat is a long tradition in Quebec. Wood stoves and fireplaces are still common in the Laurentians, the Eastern Townships, the Beauce and rural areas, and on cold, calm winter nights the smoke can pool in valleys and older neighbourhoods. Montreal has tightened its rules on solid-fuel appliances for this reason. Heavy industry adds its own local signature: aluminium smelters in Saguenay–Lac-Saint-Jean, Bécancour and the Côte-Nord, the copper smelter in Rouyn-Noranda, pulp and paper mills along many rivers, and busy ports and rail yards on the Saint Lawrence.

Then there is pollen. Ragweed – herbe à poux – thrives along roadsides, vacant lots and farm edges in the Montérégie and across the south of the province, and its late-summer season is one of the toughest in Canada for hay fever sufferers. Spring brings tree pollen from maple, birch and poplar. A good pleated filter in your ducted system keeps much of that outdoor load from circulating through your home all season.

Quebec climate, homes & HVAC systems

Most of populated Quebec has a humid continental climate: long, cold winters with steady snow cover, and warm, often muggy summers in the Saint Lawrence valley. The heating season can start in late September and run well into May, especially around Quebec City, Saguenay and Abitibi. Summer heat waves in Montreal and the Outaouais have made air conditioning and heat pumps far more common than they were a generation ago.

Thanks to low hydro-electric rates, Quebec heats differently from the rest of Canada. Many homes use electric baseboards, which have no filter at all, but a growing number have ducted electric furnaces, central heat pumps or dual-energy systems that pair a heat pump with an electric or oil furnace. Montreal plexes, suburban bungalows and split-levels, newer condos with fan coils, and rural homes with oil or wood back-up all take different filters – and retrofitted ducted systems in older buildings often use odd sizes.

Which MERV rating is right for your Quebec home?

MERV (Minimum Efficiency Reporting Value) measures how well a filter captures particles of different sizes under the ASHRAE 52.2 test standard. Higher numbers catch smaller particles. Most residential furnaces in Canada run well on MERV 8 to MERV 13 – here is how to choose:

Not sure? Read our complete MERV rating guide. If you are moving up to MERV 13 on an older furnace, a deeper 2-inch or 4-inch filter keeps airflow healthy.

Popular furnace filter sizes in Quebec

These sizes fit most Quebec furnaces and central heat pump air handlers. Retrofits in plexes and older homes often use non-standard sizes, and many newer electric furnaces take 5-inch media filters.

How often to change your furnace filter in Quebec

Filter depth	Typical home	Pets, allergies or smoke
1-inch	Every 1–3 months	Every 30–45 days
2-inch	Every 3–4 months	Every 2 months
4-inch	Every 6–9 months	Every 4–6 months
5-inch	Every 9–12 months	Every 6 months

Quebec's long heating season means the fan runs for seven or eight months a year – check 1-inch filters monthly from November to March, and again during any wildfire smoke event. See the full filter changing guide.

Air filters for Quebec businesses & property managers

Quebec's institutions and industries run a lot of air handlers: hospitals and CHSLDs (long-term care centres), cegeps and universities, school service centres, government buildings, aerospace and pharmaceutical plants, food processors, warehouses and big multi-unit residential buildings. We supply facility managers, property managers and HVAC contractors across the province with pleated, pocket, rigid cell and V-bank filters in volume.

Because we build filters ourselves in Brampton, we can match odd sizes on older rooftop units and air handlers and ship complete change-out quantities on a schedule, so your maintenance team always has the right filters in the mechanical room.

• Pleated filters in 1", 2" and 4" depths, MERV 8–13
• Pocket (bag) filters, rigid cell and V-bank filters for rooftop units and air handlers
• Wire panel, HEPA, carbon and media pads & rolls
• Volume pricing, scheduled deliveries and NET terms for approved business accounts

Shipping & delivery to Quebec

Orders to Quebec ship for $35 on orders under $250 · $60 on orders $250+. Most orders arrive in 3–9 business days, with no customs or duties because everything ships from within Canada.

Standard sizes are usually made and shipped within 1–2 weeks; custom sizes can take up to 3 weeks. Prefer to collect? Free pickup is available Monday to Friday, 7:00 AM – 4:30 PM at 15 Melanie Drive, Brampton. Full details are on our shipping & returns page.

Cities and towns we serve in Quebec

Areas we deliver to across Quebec

Montreal · Quebec City · Laval · Gatineau · Longueuil · Sherbrooke · Saguenay · Lévis · Trois-Rivières · Terrebonne · Saint-Jean-sur-Richelieu · Repentigny · Brossard · Drummondville · Saint-Jérôme · Granby · Blainville · Rimouski · Rouyn-Noranda · Sept-Îles

Nearby location pages: Ontario, British Columbia, Alberta, Manitoba, Nova Scotia, Saskatchewan, New Brunswick, Newfoundland and Labrador, Prince Edward Island, Yukon, Northwest Territories & Nunavut. Or see all locations we deliver to.

Quebec air filter FAQ

Helpful air quality guides