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What Size Water Heater Do I Need? — Toronto & Scarborough Sizing Guide
Tank Water Heater Sizing by Household Size
| Household Size | Recommended Tank Size |
|---|---|
| 1–2 people | 40 gallon |
| 2–3 people | 50 gallon |
| 3–4 people | 50–60 gallon |
| 4–6 people | 60–75 gallon |
Tankless Water Heater Sizing
For tankless, look at flow rate (GPM) and temperature rise. Toronto cold water supply enters at ~8°C in winter. To raise to 49°C (minimum safe temperature) requires a 41°C rise. For 2 simultaneous showers (4 GPM), you need a unit rated for 4 GPM at 41°C rise — typically a Navien 180/240 or equivalent.
What size water heater do I need in Toronto?
Water heater sizing in Toronto: 40 gallon for 1-2 people, 50 gallon for 2-3 people, 60 gallon for 3-4 people. For tankless, calculate GPM needed at 41C temperature rise (Toronto winter inlet). Madina Mechanical provides free water heater sizing consultations. Call (416) 424-4328.
🔗 Water Heater Installation Toronto | Tankless Water Heater Toronto
Free Water Heater Sizing Consultation: (416) 424-4328
