Ontario Law Changes: Your landlord can’t stop you from installing AC anymore, here’s what changed July 1
Courtesy Barrie360.com
By Logan Miller, June 30, 2026
Environment Canada has an orange heat warning in effect for Barrie, Collingwood and Hillsdale, with daytime highs expected to hit 31 to 33 degrees and possibly climb as high as 36. The hottest days are expected to be Wednesday and Thursday, right as a new Ontario law gives renters the explicit right to install their own air conditioning.
The timing isn’t a coincidence the law was written around. It’s just bad luck, or good luck, depending on whether your apartment has central air.
What the new AC rule actually does
A section of a 2023 Ontario law comes into force July 1. It allows tenants to install and use a window air conditioner or portable unit if their landlord doesn’t already supply one, subject to certain conditions.
Until now, many leases left the question murky. Landlords could refuse, citing building rules, electrical concerns or aesthetics. The new provision gives tenants firmer legal ground to cool their own units when their landlord hasn’t.
It’s one of several tenant-related changes taking effect on Canada Day. Some advocates say other changes to landlord and tenant rules arriving the same day make evictions easier and tilt the system further against renters, even as the AC provision moves in the opposite direction.
Why the heat makes this more than a paperwork update
Minimum overnight temperatures are expected to sit between 21 and 24 degrees, offering little relief once the sun goes down. Environment Canada warns the hot, humid air could also push air quality toward the high-risk category.
For renters without central air, that combination, heat that doesn’t break overnight and air that gets worse, is exactly the scenario the new rule is meant to address. A window unit installed this week could matter for health, not just comfort.
The bottom line for Barrie renters
If your apartment doesn’t have air conditioning and your landlord has resisted letting you install your own, the legal landscape just shifted in your favour. With a long-duration heat event beginning this week and the hottest temperatures expected Wednesday and Thursday, it’s a provision a lot of local renters may end up using sooner rather than later.