TORONTO, September 24, 2026 – As the weather cools, Toronto rental housing will enter the winter heating season starting October 1. Under current City rules, from October 1 to May 15 each year, landlords must ensure that indoor temperatures in rental units are at least 21°C.
The rule applies to residential rental properties, including rental apartment buildings. If a condominium unit is rented out, the landlord is also responsible for ensuring that the unit meets the City’s indoor temperature standard.
The 21°C requirement is the minimum indoor temperature. The City of Toronto notes that weather can vary significantly between September 15 and October 15. If outdoor temperatures are higher and a unit already reaches 21°C without the heat being turned on, landlords may reduce or temporarily turn off the heating system.
After the heating season begins, tenants who find that their unit has no heat, or that the indoor temperature remains below 21°C, should first contact their landlord, property manager or building management. If the issue is not resolved within 24 hours, tenants can call 311 to report the problem to the City.
After receiving a complaint about low temperature or no heat, the City may send enforcement staff to investigate and require the property to make corrections. Failing to maintain a rental unit at a minimum of 21°C can result in a fine of up to $500. Ongoing or serious violations may also proceed to court.
In addition to heat, landlords must also maintain basic vital services in rental units, including hot and cold water, electricity and fuel. Even if a tenant is behind on rent, a landlord cannot cut off these essential services on their own. Temporary interruptions required for repairs are treated differently.
（LJI by Yuanyuan）
