Ontario tenants can install window or portable A/C units: what landlords need to know

Summers in the GTA are getting hotter, and more tenants want a window unit or a portable air conditioner to get through a heat wave. Ontario has now put that right into its rules, and that changes how landlords and property managers need to respond when the request lands in their inbox.

If you own or manage rental units, this is worth understanding before the next hot spell. A wrong answer to a tenant can turn a simple question into a dispute, and disputes cost time you do not have.

Can an Ontario tenant install a window or portable air conditioner?

In plain terms, the default has shifted toward the tenant. Your policy should start from "how do we allow this safely," not "how do we say no."

What exactly changed in the Ontario rules?

The protection for tenant air conditioning is one of the items included in Ontario's roundup of regulations and statutes in force as of July 1, 2026.

• The right is recognized. Ontario's July 1, 2026 backgrounder lists the tenant air conditioning measure among the changes taking effect, so it is no longer a grey area left to each landlord's preference.
• Compliance is the theme. Industry coverage for Canadian property managers frames this period as one where compliance gets tighter, which means outdated lease clauses and informal "no A/C" policies need a review.
• Details still matter. The exact conditions, exemptions, and any cost-sharing mechanics are not fully spelled out in the sources here, so confirm the specifics before you write them into a lease. [[VERIFY: confirm precise conditions, exemptions, and any permitted charges in the actual regulation text]]

Can a landlord set conditions on how the unit is installed?

Yes, reasonable conditions around safety and proper installation are still fair game, even though a flat ban is not.

Think of it the way you would treat any modification a tenant makes to a unit. You are protecting the building and the people in it, not obstructing the tenant.

• Safe mounting. A window unit that is not secured properly is a hazard to people below. Requiring proper brackets and secure installation is reasonable.
• No damage to the building. You can expect the unit to be installed without permanent damage and removed cleanly at move-out.
• Electrical safety. Older buildings and shared circuits can be strained by A/C units, so a note about not overloading outlets is sensible.
• Clear documentation. Put the agreed conditions in writing so both sides know what "properly installed" means.

Who pays for the electricity the unit uses?

It depends on how utilities are handled in the tenancy, and the sources here do not lay out a fixed fee formula.

If the tenant pays their own hydro, they already absorb the running cost of an air conditioner. Where the landlord pays utilities, the picture is less obvious, and this is exactly the kind of detail you should confirm against the actual rule before charging anything.

How should property managers handle the flood of summer requests?

Have one clear, written policy and a fast way to respond, because heat-wave requests arrive all at once.

• Update your lease and house rules. Remove any blanket "no air conditioners" language and replace it with safe-installation conditions.
• Give staff a script. When a tenant calls about A/C, the answer should be consistent every time, not dependent on who picks up.
• Track the requests. Log who asked, what was approved, and any conditions, so you have a record if a dispute ever comes up.
• Move quickly. During a heat wave, a slow response is what turns a routine ask into a complaint.

If you manage Ontario rentals and want your policies, records, and tenant communication in one place, PropertyHub is built for exactly this kind of ongoing compliance work.

Frequently asked

Can an Ontario landlord ban tenants from installing a portable or window air conditioner?

Under the changes in force as of July 1, 2026, Ontario protects a tenant's right to install a window or portable air conditioning unit. A landlord cannot use a blanket ban to prevent it, though reasonable conditions tied to safety and proper installation may still apply.

Can a landlord charge extra for a tenant's air conditioner in Ontario?

This depends on how the tenancy handles utilities and what the current rules allow. If a tenant pays their own hydro, they carry the running cost. Where the landlord pays utilities, confirm the exact rules before charging anything, since the source materials do not spell out a specific fee formula.

Do these air conditioning rules apply to all Ontario rentals?

The change is part of the Ontario regulations and statutes reported in force as of July 1, 2026. Because coverage and exemptions vary, confirm how the rule applies to your specific unit and building before you set a policy.