Effective July 1, 2026, the Residential Tenancies Act (RTA) introduced specific provisions regarding air conditioning (AC) electricity recovery. For those involved in rental property management ontario, these changes represent a shift in how utility-inclusive tenancies are managed. This update allows landlords to recover the cost of electricity used by window or portable AC units installed by tenants.
Navigating these regulations requires operational discipline. The legislation provides a framework for cost recovery but strictly prohibits profit-taking on utility usage. Durham property owners must understand the criteria for eligibility, calculation methods, and seasonal adjustments to remain compliant.
Eligibility and the July 1, 2026 Threshold
The right to recover AC electricity costs is not retroactive. It applies only to window or portable AC units installed on or after July 1, 2026. This date serves as a permanent cutoff for existing installations. Units installed by tenants before this date are grandfathered under previous rules. In those cases, if electricity was included in the rent, the landlord must continue to absorb the cost of the AC usage without additional charges.
Rental property management ontario involves strict adherence to these timelines. For any new installation after the July deadline, the landlord may implement a seasonal rent increase. This applies only if the landlord pays for the electricity as part of the tenancy agreement. If the tenant pays their own hydro directly to the utility provider, no seasonal increase is permitted as the tenant already carries the financial burden of the usage.

Principles of Cost Recovery
The RTA is clear that AC charges must reflect cost recovery rather than a new revenue stream. Flat fees are non-compliant and can be challenged at the Landlord and Tenant Board (LTB). The seasonal increase must be equal to the actual cost of the electricity or a reasonable estimate based on the information provided by the tenant.
Investors must use a data-driven approach to determine these costs. To establish a reasonable estimate, the following data points are required:
- BTU Rating: The cooling capacity of the unit, which correlates to its power draw.
- Energy Star Certification: The efficiency rating of the hardware.
- Intended Usage: The approximate hours per day and months per year the tenant intends to operate the unit.
- Current Hydro One Rates: The specific kilowatt-hour (kWh) cost including delivery and regulatory charges in the Durham Region.
Using these variables ensures the calculation is defensible. If an owner cannot prove the cost is a "reasonable estimate," they risk being ordered to rebate the collected funds.
Seasonal Adjustments and Usage Windows
The AC electricity charge is a temporary, seasonal addition to the rent. It is not a permanent base rent increase. Legislation requires that the charge be removed immediately when the AC unit is no longer in use or has been removed from the window.
Operational discipline in rental property management ontario requires tracking these dates precisely. A common practice is to apply the charge from June through September, but this must align with the actual presence of the unit. If a tenant removes the unit in August, the charge must stop in August. Failure to remove the surcharge promptly constitutes an illegal rent increase.
Owners should maintain a log of installation and removal dates. This documentation serves as the primary defense in the event of a dispute regarding the duration of the seasonal charge.

Tenant Rights to Installation
Under the July 2026 rules, tenants have a statutory right to install window or portable AC units, provided certain conditions are met. Landlords can no longer prohibit AC units simply by clause in the lease if the tenant follows the required notice and safety protocols.
Tenants are required to provide written notice of their intent to install a unit. They must also provide the specifications of the device to allow for the electricity calculation. The landlord can only prohibit the installation if it is unsafe or violates municipal property standards.
Key safety and compliance requirements include:
- Safe Installation: The unit must be secured to prevent falling hazards.
- Property Standards: The installation must not cause structural damage to the window frame or building exterior.
- Bylaw Compliance: Local Durham Region municipal bylaws regarding noise or exterior appearances must be followed.
Risk Mitigation Through Documentation
Professional management focuses on risk reduction. When a tenant provides notice of a new AC installation, the landlord should respond with a formal document outlining the calculated seasonal increase. This document should provide a transparent breakdown of the math used to reach the monthly figure.
Using current Hydro One rates for the Durham Region and the BTU specs from the manufacturer is the most objective method. Presenting this breakdown to the tenant at the outset reduces the likelihood of a future LTB filing. It demonstrates that the owner is following the cost-recovery mandate of the RTA rather than seeking profit.
Our approach to Property Management Services emphasizes this level of detail. We ensure that all utility-related charges are calculated against current market rates and documented according to provincial standards.

Operational Checklist for Durham Owners
To manage these changes effectively, investors should follow a standardized process for every new AC request:
- Request Specifications: Ask for a photo of the manufacturer's label showing the BTU rating and wattage.
- Verify Installation Date: Confirm the unit was not previously installed prior to July 1, 2026.
- Calculate Usage: Estimate the kWh consumption based on the tenant's stated hours of use and apply the local tiered or time-of-use rates.
- Issue Notice: Send a written notice stating the monthly surcharge amount and the start date.
- Monitor Removal: Confirm when the unit is removed at the end of the season to cease billing.
This process ensures that the property remains compliant with the RTA while protecting the owner from unrecovered utility expenses.
Professional Management in the Durham Region
The 2026 RTA updates increase the administrative burden on property owners who include utilities in their rent. Managing seasonal fluctuations and technical calculations requires a level of oversight that goes beyond casual landlording.
Olympus Realty Property Management provides the operational framework necessary to handle these regulatory shifts. Our focus is on long-term property value protection and the reduction of legal exposure for our clients. We apply a boutique, investor-minded approach to ensure that every cost recovery measure is handled with precision.
For assistance with your rental property management ontario or to discuss your Durham Region investment, contact our office directly. We provide the technical oversight required to navigate the complexities of the Residential Tenancies Act.
For inquiries, call 289-671-9987 or visit our Contact Page.
This article is general information, not legal advice.
