⭐ 4.9 Stars · HVAC Experts Scarborough · (416) 424-4328
How Often to Change Your Air Filter in Ontario — HVAC Filter Replacement Guide
Filter Replacement Schedule by Type
| Filter Type | Change Every | Notes |
|---|---|---|
| 1″ Fibreglass (cheap) | 30 days | Minimal particle capture; change monthly |
| 1″ MERV 8 Pleated | 60–90 days | Standard; more often with pets or allergies |
| 4″ Media Filter (MERV 11–13) | 6–12 months | Best value; replace annually at fall tune-up |
Signs Your Filter Needs Changing Now
- Filter is grey/black (visible dirt)
- Furnace/AC running longer than usual
- Increased dust in the home
- Higher hydro bills
How often should I change my HVAC filter in Ontario?
Change 1-inch HVAC filters every 30-90 days in Ontario (more often with pets or allergies). 4-inch media filters last 6-12 months. A dirty filter forces your furnace and AC to work harder, increasing energy use and causing premature wear. Call Madina Mechanical at (416) 424-4328 for HVAC maintenance in Scarborough.
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HVAC Maintenance Scarborough: (416) 424-4328
