Air Filters Georgina
Furnace, AC and HVAC filters for Georgina's lakeside homes, converted cottages and farms on the south shore of Lake Simcoe – made in Brampton and shipped to your door.
- ✓ Made in Canada
- ✓ Custom sizes
- ✓ MERV 8 · 11 · 13
- ✓ No customs or duties

Air quality in Georgina
- Wood stove smoke
- Lake Simcoe humidity & mould
- Cottage-country pollen
- Shadfly season
- Wildfire smoke
- Highway 48 & 404 traffic
Georgina wraps around the south shore of Lake Simcoe, from Keswick on Cook's Bay through Jackson's Point and Sutton to Pefferlaw and Port Bolster. Life here is shaped by the lake: damp shoulder seasons, humid summers and lots of homes close to the water, where basements and crawl spaces can hold moisture and mould spores if air isn't moving and being filtered.
Wood heat is common in Georgina, especially in older cottages and rural homes around Baldwin, Udora and Virginia. On calm winter nights, smoke from stoves and fireplaces settles over the shoreline communities. Summer brings wildfire smoke from northern Ontario and Quebec on some days, and the forests of Sibbald Point and the Pefferlaw River valley produce a heavy spring tree pollen season.
Early summer is also shadfly (mayfly) season, when huge hatches off the lake coat screens and outdoor units. Traffic is lighter than in the southern GTA, but Woodbine Avenue, Highway 48 and the Highway 404 extension into Keswick carry growing commuter and weekend cottage traffic.
Georgina climate, homes & HVAC systems
Georgina's winters are cold and snowy, with lake-effect squalls off Lake Simcoe and the furnace running from early fall to late spring. Ice fishing huts dot the lake in January and February. Summers are warm and often humid near the water, so homes with central air or ductless units use them heavily in July and August.
Housing ranges from new subdivisions in Keswick to older cottages that have been winterized and turned into year-round homes along Lake Drive, plus farmhouses and rural properties further east. Many rural homes use propane or oil furnaces, wells and wood stoves, while converted cottages often have small furnaces with non-standard filter slots tucked into tight spaces.
MERV 11 for lake humidity, MERV 13 for wood smoke
MERV 11 traps pollen, mould spores and pet dander in most Georgina homes. If you live near neighbours who burn wood, or during smoke events, MERV 13 captures more fine particles – and a carbon filter helps with odours.
Shop MERV 11 → Shop MERV 13 →Seasonal filter tips for Georgina
- Spring: Change the filter after the ice goes out and the shoreline trees start to bloom.
- Summer: Rinse shadflies off the AC condenser and check the filter monthly in humid weeks.
- Fall: Fresh filter when you close up the screens and fire up the furnace.
- Winter: If you also burn wood, check the furnace filter every few weeks through February.
Which MERV rating is right for your Georgina 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:
| Rating | What it captures | Best for |
|---|---|---|
| MERV 8 | Dust, lint, pollen, mould spores and larger particles (3–10 microns) | Budget-friendly everyday protection, rental units, new-build dust |
| MERV 11 | Everything MERV 8 does plus pet dander, fine dust and some smoke (1–3 microns) | Most family homes, pets, seasonal allergies |
| MERV 13 | Fine particles down to 0.3–1 micron, including much of the PM2.5 in wildfire smoke | Asthma, allergies, wildfire smoke, newborns and seniors |
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 Georgina
Winterized cottages and older homes in Georgina often have small or unusual filter slots – check our special sizes, or we can build one to order.
How often to change your furnace filter in Georgina
| 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 |
Lakeside Georgina homes with damp basements should check the filter monthly in summer, when humidity and spores are highest. See the full filter changing guide.

Air filters for Georgina businesses & property managers
Georgina's economy leans on tourism, marinas, resorts and lakeside restaurants, plus plazas in Keswick, farms, schools, community centres, churches and seniors' residences. Many buildings run rooftop units or older air handlers that have to cope with lake humidity and summer crowds.
We supply pleated, pocket and panel filters in bulk to Georgina property managers, marinas and HVAC contractors, and we can make odd sizes for older equipment. Ask about scheduled deliveries ahead of the summer season.
- 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 Georgina
Orders to Georgina ship for Ontario's $25 flat rate, and orders of $2,500 or more ship free. Addresses within 60 km of our Brampton facility qualify for free local delivery – if yours does, “Free GTA Delivery” will appear at checkout. Most orders arrive in 3–9 business days.
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.
Why Georgina customers choose Canadian Air Filters

Areas we deliver to in Georgina
Keswick · Sutton · Jackson's Point · Pefferlaw · Port Bolster · Belhaven · Baldwin · Udora · Virginia · Willow Beach · Roches Point · Island Grove · Egypt · Duclos Point
Nearby location pages: York Region, Vaughan, Markham, Richmond Hill, Newmarket, Aurora, King Township, Whitchurch-Stouffville, East Gwillimbury. Or see all locations we deliver to.
Georgina air filter FAQ
What filter is best for a winterized cottage in Georgina?
Most converted cottages do well with a pleated MERV 11 filter. Older furnaces in tight spaces sometimes use unusual sizes, so measure the old filter before ordering.
Can a filter help with damp and musty smells near the lake?
A pleated filter captures mould spores circulating through the ducts, but humidity control matters too – run a dehumidifier in damp basements. For lingering odours, try a carbon pleated filter.
Does wood smoke affect indoor air in Sutton and Keswick?
On still winter nights smoke can settle along the shoreline and seep indoors. A MERV 13 filter running with the furnace fan captures a good share of fine smoke particles.
How often should I change my filter in Georgina?
Every 1–3 months for 1-inch filters and 6–12 months for 4-inch filters, more often if you heat with wood, have pets or live right on the water.
Do you supply marinas and resorts?
Yes. We make pleated, pocket and panel filters for commercial HVAC and can set up a bulk account with scheduled deliveries before the busy season.
Do you have washable filters for seasonal properties?
We carry washable filters, though for year-round homes a disposable pleated filter usually captures more fine particles.
How much does shipping to Georgina cost?
Orders to Georgina ship for Ontario's $25 flat rate, and orders of $2,500 or more ship free. Addresses within 60 km of our Brampton facility qualify for free local delivery – if yours does, “Free GTA Delivery” will appear at checkout. Most orders arrive in 3–9 business days.
Can you make custom-size filters for my Georgina home or building?
Yes. Because we manufacture in Brampton, we can build non-standard and custom sizes to order – usually within about 3 weeks. Use our custom filter form or email info@canadianairfilters.com with your dimensions and MERV rating.
Helpful air quality guides
Ready to breathe better in Georgina?
Made in Brampton · $25 flat rate · standard & custom sizes.