Is tenant responsible for air conditioning maintenance in Calgary

If the cooling system stops working mid-July, the first question is usually: who’s supposed to fix this? In most lease agreements around southern Alberta, the answer depends heavily on how the system was described before move-in. If it’s explicitly included as part of the unit, then the onus to repair usually lands on the property owner–especially when it comes to larger issues like refrigerant leaks or compressor failure.
But it’s not always that simple. Some landlords include a clause pushing smaller upkeep tasks onto the occupant. Things like changing filters monthly, clearing debris around the outdoor unit, or reporting strange noises early–these may fall under basic care expectations, even if the renter didn’t install the equipment.
Here’s where things can get murky. If someone ignores basic upkeep and the system fails because of it, they might be on the hook. A clogged filter that strains the motor? That could easily lead to a dispute. Documentation matters here–maintenance logs, emails, photos of blocked vents. I’ve seen people end up covering costs just because they didn’t replace a $10 filter.
In newer apartment buildings, management often takes over seasonal checks, especially for central systems. But in older duplexes or single-family homes, responsibility tends to shift. If you’re unsure who handles what, re-read the lease and ask directly before that first hot day hits. It’s better than arguing over repair bills with no AC running.
One more thing–don’t wait for problems. If something feels off–say, airflow weakens or there’s a weird smell–mention it. Even if it’s not your problem to fix, flagging it early could save a lot of back and forth later.
Let me know if you’d like a sample lease clause or a quick filter maintenance checklist.
Who Pays for AC Repairs: Understanding Lease Agreements in Alberta

If the written lease doesn’t clearly assign who handles air conditioning repairs, the default rules under Alberta’s Residential Tenancies Act apply: property owners are generally expected to keep systems like cooling equipment in working condition. But that doesn’t always mean they’ll cover every repair without question.
Start with the lease. Some contracts include a clause making the occupant responsible for fixing or even replacing appliances not considered essential, like portable or window-mounted units. Central systems? Usually a different story. If the air conditioning is part of the permanent infrastructure–ducted, integrated–it’s often treated like plumbing or electrical work, which falls under the landlord’s duties.
Grey Areas in Written Agreements
Clauses can vary. One lease I saw had a provision stating the occupant must cover “minor upkeep of appliances,” but it didn’t define “minor.” A clogged filter? Maybe. Compressor failure? That’s likely beyond basic upkeep. Without specifics, it’s often a case of back-and-forth negotiations or even needing to consult the Landlord and Tenant Advisory Board.
What to Ask Before Signing

Don’t assume cooling systems are covered. Ask upfront: Who pays if the AC dies mid-July? Will there be reimbursement if repairs are arranged independently? If the unit isn’t working, will the rent be reduced until it’s fixed? Getting that in writing is far less painful than arguing about it during a heatwave.
And if you’re already in the middle of a lease and unsure? Request clarification in writing. It’s worth it, especially before calling a technician or committing to out-of-pocket costs.
Let me know if you’d like a quick lease clause example, sample repair scenario, or checklist of questions to ask before renting.
What Counts as Reasonable AC Use Under Calgary Rental Laws
Using an air conditioner during July and August, especially when indoor temperatures consistently climb above 25°C, is considered fair use. Short bursts to cool a space to a livable range–somewhere between 21°C and 23°C–don’t raise eyebrows. Running the unit nonstop, however, even overnight when outside temperatures dip, can be flagged as excessive.
According to Alberta’s Residential Tenancies Act, renters are expected to use appliances “reasonably” and not contribute to abnormal wear or high utility costs unless previously agreed upon. For cooling systems, that usually means avoiding 24/7 use, closing windows while it’s running, and keeping filters clean if that’s part of the rental agreement.
Excessive Use or Justified Cooling?
Leaving the AC on full blast while out for the day isn’t likely to be viewed as fair usage–unless there’s a pet inside, or an agreement allowing for constant operation due to health concerns. In multi-unit buildings, where central systems serve several units, overuse in one suite might trigger complaints from neighbours or management. That’s where things get tricky. If electricity is included in rent, it might still be within the leaseholder’s rights to use it freely–but some landlords push back if costs skyrocket.
Reasonable use also depends on the age and efficiency of the system. Older units that run longer to cool the same area may be less efficient, but that’s not the renter’s fault. Still, if filters haven’t been cleaned for months or windows are left open all summer, fingers could start pointing.
It’s best to err on the side of moderate usage–cool when needed, shut it off when it’s not. If there’s any uncertainty, especially during a heatwave, a quick message to the property owner can clear the air–figuratively and literally.
Let me know if you’d like a short list of common AC usage rules or a sample agreement clause.
How to Handle AC Malfunctions: Tenant Steps Before Calling a Technician
Check the thermostat first. Make sure it’s set to “cool” and the temperature is lower than the room’s current reading. It sounds obvious, but a surprising number of calls turn out to be a bumped setting or dead batteries.
Inspect the air filter. If it looks clogged or hasn’t been changed in over a month, that could be the entire issue. A blocked filter can restrict airflow so much that the unit barely cools at all–or even shuts down.
Listen for unusual sounds. Clicking, rattling, or buzzing could mean something’s loose, or there’s a minor electrical issue. If it’s more of a humming with no cool air, the compressor might be struggling to kick in. That’s more serious–but still helpful info to have on hand if you end up making the call.
Try resetting the breaker. Sometimes the AC trips the circuit. Flip it off for about 30 seconds, then back on. If it runs normally after that, great. If it trips again, definitely stop there. That’s not something to troubleshoot without the right tools–or training.
Check the outdoor unit. Debris like leaves or garbage can block the airflow around the condenser. If it’s dirty, gently clear the area. But don’t open anything or spray water into the fan housing unless you know exactly what you’re doing. That can go sideways quickly.
Note any recent changes. Was there a power outage? A renovation upstairs? Even small things like rearranging furniture near vents can change how the system performs. It’s worth thinking back before assuming the unit itself is failing.
If all that checks out and it’s still not cooling–or if it smells weird, leaks, or just won’t turn on at all–then it’s time to book a technician. But having already ruled out these basics? You’ll save time, maybe money, and probably get a faster diagnosis.
Let me know if you’d like a list of tools to check before calling, or a printable AC troubleshooting checklist.
Contact “Calgary Air Heating and Cooling Ltd” For More Information:
Address
95 Beaconsfield Rise NW, Calgary, AB T3K 1X3
Phone
+1 403 720-0003
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Open 24 hours 7 days a week