Any size, built to fit.
For furnace, HRV/air exchanger, and ventilation system filters. Enter your exact outside dimensions and we'll price every filter that fits.
Enter inches as a decimal — e.g. 1/4" = .25, 1/2" = .5, 3/4" = .75
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Pleated Filters
Everyday furnace filters
Rangehood Filters
Kitchen Hood Grease Filters
Washable Filters
Reusable, long life
Condo Filters
Every condo size
Carbon Filters
Odour and VOC removal
Heat Pump Covers
Winter protection for outdoor units
Custom Filters
Any size, built to fit
Portable Room Air Purifiers
Standalone units for any room
60+ brands sourced. Match your existing filter in one click.
Canadian-owned, sourcing filters for homes across the country since 1994.
Canadian-owned, since 1994
30+ years sourcing filters for Canadian homes.
Custom-cut to your dimensions
Any size, no minimums, no quote-request friction.
Ships across Canada
From our Quebec and Ontario warehouses.
Match any brand or model
60+ brands sourced — find yours below.
Questions homeowners ask us
Answers to what residential customers ask us most. Don't see yours? Give us a call.
How do I know what size filter I need?
Measure the filter you're replacing (not the slot it sits in) — length, width, and depth (thickness) in inches, to the nearest 1/8". No old filter to measure? Measure the opening it slides into instead.
Still not sure what you're looking at? Send us a photo and the make/model of your furnace or HVAC unit and we'll confirm it.
How often should I change my furnace filter?
Every 1–3 months for most pleated filters, depending on usage, pets, and air quality — check monthly and change when it looks grey or clogged. Washable filters just need a rinse or wipe-down on the same kind of schedule instead of a replacement.
What's MERV, and which rating do I need?
MERV (Minimum Efficiency Reporting Value) rates how well a filter captures particles — the higher the number, the finer the particles it traps. MERV 8 handles everyday dust and lint; MERV 11–13 adds pollen, dander, and mould spores; MERV 13+ starts catching smoke and fine particulate.
Most residential furnaces run well on MERV 8–13. Going higher can restrict airflow on a system that isn't rated for it, so check your system or ask us before jumping to the highest number.
My filter isn't a standard size — can you make one?
Yes. Send us your exact width, height, and depth — through the sizing tool above, or by calling or emailing us — and we'll build it to fit. No minimums, no quote request needed.
Do you ship across Canada?
Yes, coast to coast, plus the continental US. Stock orders ship within 5–7 business days; custom-cut filters take about 2 weeks to fabricate. We ship with Purolator, UPS Ground, or FedEx Ground from our Quebec and Ontario warehouses.
Can you match a discontinued or hard-to-find filter?
Usually. We source across suppliers throughout North America, so even if a filter's been discontinued we can often find an OEM equivalent or build a direct replacement. Send us the brand, model, and dimensions and we'll confirm a match.
What if I'm still not sure what I need?
Call us at 1-800-808-0496 or send us a photo and the details of your unit through the form below — we'll confirm the right filter, usually the same business day.
Still not sure?
Send us your filter details and we'll find the right match — usually the same business day.