Summer heat can make a rental unit uncomfortable, and many tenants in Ontario want clear guidance on installing air conditioning. This article explains tenant and landlord responsibilities, when written consent is required, differences between portable, window and permanently mounted systems, and steps you can take if access or repairs are denied. You will also learn practical tips for documenting requests, hiring qualified installers, and protecting your tenant rights under the Residential Tenancies Act in Ontario. The language is plain and aimed at renters who need straightforward steps to request installation, negotiate reasonable solutions with their landlord, or apply to the Landlord and Tenant Board when disputes cannot be resolved informally.
Tenant rights and landlord consent
In Ontario the Landlord and Tenant Board administers residential tenancy disputes and the Residential Tenancies Act, 2006 sets out core obligations for landlords and tenants. If your lease explicitly forbids alterations, you still may be able to request permission; landlords cannot unreasonably withhold consent where modifications do not damage the property or breach safety codes. Always check your lease and start by asking for written permission. You can also contact the Landlord and Tenant Board for procedural guidance.[1][2]
Types of air conditioning and what they mean
- Portable units: these sit on the floor and usually do not require landlord permission unless the lease forbids their use or they obstruct common areas.
- Window units: often allowed if they do not require structural changes, but many landlords want advance written notice because of potential damage or security concerns.
- Permanent or ducted systems: these alter the building and generally require landlord consent and possibly building permits; do not install without written approval.
When written permission is usually required
- If the installation requires drilling into walls, altering windows, or modifying electrical systems.
- If the building has heritage, safety or bylaw restrictions that could be breached by the installation.
- If the lease includes clauses about alterations, fixtures or returns at move-out.
If you expect repairs or landlord-ordered removals after installation, review your lease for return-of-condition clauses and agree in writing who will pay for removal or repairs. For examples and responsibilities around routine maintenance, see Routine Repairs in Rental Units: Tenant and Landlord Responsibilities and for broader obligations see Obligations of Landlords and Tenants: Rights and Responsibilities Explained.
Documenting requests and practical steps
Good documentation protects you. Send a written request (email or letter) describing the proposed unit, installation method, installer qualifications, and proposed dates. Keep photos of the area before and after installation and keep invoices from certified installers. If a landlord refuses without a reasonable reason, you can apply to the Landlord and Tenant Board to resolve the dispute; the Board provides application forms and processes online.[3]
FAQ
- Can I install a portable air conditioner without asking my landlord?
- Often yes, if it causes no damage and the lease does not specifically forbid portable units; still tell the landlord in writing and keep records.
- Does my landlord have to pay for the air conditioner or its installation?
- No. Landlords are generally not required to provide air conditioning. If you and your landlord agree that the landlord will pay, get that agreement in writing.
- What happens if my landlord unreasonably refuses permission?
- You can apply to the Landlord and Tenant Board for a dispute resolution; include your written request, any replies, and photos or quotes with the application.[1]
- Will I need permits or a licensed electrician?
- Possibly. Permanent installations that affect wiring or structure typically require licensed contractors and, in some municipalities, permits; confirm with your installer and landlord before proceeding.
How-To
- Contact your landlord or property manager and describe the exact unit and installation plan.
- Request written permission and include photos, installer qualifications, and any permit plans you have.
- Hire a licensed technician for permanent or electrical work and obtain receipts and permits.
- Document the area before and after installation with dated photos and keep all communications.
- If the landlord refuses without a reasonable basis, apply to the Landlord and Tenant Board with your documentation.[1]
Key Takeaways
- Always check your lease and get landlord consent in writing for any non-temporary installation.
- Keep photos, receipts, and written communication to support any dispute resolution.
- Use the Landlord and Tenant Board when informal negotiations fail.
Help and Support / Resources
- Landlord and Tenant Board - official information and forms
- Renting in Ontario: Your rights and responsibilities (Government of Ontario)
- Residential Tenancies Act, 2006 (e-Laws)
