Heat Bylaws in Toronto, Hamilton, and Ottawa: The Minimum Temperature Rules by City
There's no single "Ontario heating law" — the minimum temperature your landlord must maintain, the dates it applies, and the fines all come from your city's bylaw. Toronto requires 21°C (Oct 1–May 15); Ottawa requires 20°C by day and 16.67°C overnight; Hamilton requires 20°C (Sept 15–May 15). This guide lays out the ex
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