What window standards are landlords required to meet in Ontario?

Landlords in Ontario must ensure windows meet basic safety and habitability standards under the Residential Tenancies Act, but there are no specific window performance requirements like energy efficiency ratings.

The primary legal requirements focus on safety and basic functionality. Windows must be in good repair, properly secured, and provide adequate ventilation and natural light. Any broken glass, damaged frames, or windows that won't open or close properly must be repaired promptly. For upper-floor units, windows need proper safety features like screens or guards to prevent falls, especially where children might be present.

Habitability standards require that windows allow sufficient natural light and ventilation to make the unit livable. This means windows can't be permanently sealed shut (except in buildings with mechanical ventilation systems), and there must be adequate window area relative to room size. If windows are so drafty they make heating impossible or create condensation problems leading to mold, landlords may be required to address these issues.

In Ottawa's climate, while landlords aren't legally required to install energy-efficient windows, extremely poor-performing windows that make units unheatable or cause ice buildup could be considered a maintenance issue. Tenants can file complaints with the Landlord and Tenant Board if window problems affect habitability, but landlords typically aren't required to upgrade to modern energy-efficient windows unless the existing ones are actually broken or non-functional.

City of Ottawa requirements may vary for specific safety features - landlords should confirm current window safety requirements with Ottawa Building Services, especially for multi-unit buildings or units with children present.

For landlords considering window upgrades, modern energy-efficient windows can reduce tenant complaints about comfort and heating costs while potentially qualifying for energy rebates.