The Real Cost of Deferred HVAC Maintenance (With Real Numbers)-Toronto, Canada
- martinbliss9
- Dec 16, 2025
- 5 min read

One of the most popular (and expensive) choices for business buildings in Toronto and the GTA is to put off HVAC repair. At first sight, this easy "savings" would not appear like a bad choice. In practice, it leads to a slow rise in costs over time, such as greater running costs, unexpected downtime, unhappy tenants, and the early breakdown of important building systems.
We wanted to talk about the real costs of putting off HVAC maintenance, give examples of when putting off maintenance might be the right choice (or not), and give you the exact words you can use to have productive conversations with your building owners about this important topic.
What Deferred HVAC Maintenance Means
Deferred maintenance is a general term for when a planned inspection, service, repair, or component replacement is put off until later. This is commonly done to cut costs right away or because of limited capital budgets.
Here are the most typical types of HVAC maintenance that people put off:
Visits for seasonal maintenance
Replacing belts, bearings, or motors
Leaks in the refrigerant or things that block airflow
Accepting that an old rooftop unit (RTU) is about to break down
At the time, this may seem like a small issue and safe choice. However, building systems are built to last for a specific amount of time based on how often they need to be serviced. HVAC systems, in particular, don't usually break down slowly. When they do break down, it can be without warning and costs can be a lot more than planned.
Delays in maintenance continue to increase in Toronto
In some cases, deferring HVAC maintenance is unavoidable. In many instances, it’s simply because owners are more comfortable deferring annual servicing when they view maintenance from a reactive perspective.
That being said, there are a number of things going on in Toronto that are making it harder to keep up with maintenance on commercial buildings:
Older buildings with equipment that was installed 20 to 30 years ago or longer
Rising labour and parts costs that make repair bills seem high
Capital plans that get out of sync when owners push back HVAC timelines
Owners or agents who only care about monthly OpEx and want to save money
Tighter energy and code requirements that put more strain on systems
Because of this, property managers sometimes feel stuck between the requirement to keep systems working and the need to fulfill short-term budget demands from owners.
The Real Costs of Putting Off HVAC Maintenance
Of course, putting off maintenance doesn't really save money. It only shifts costs from one place to another. Here are some of the hidden costs that property managers have to deal with the most when they put off important HVAC maintenance.
1. Emergency Repair Overcharges
Little is more expensive than repairing at night or on weekends. Repair service within business hours is far less costly. One of the heftiest costs is the premium for emergency service call.
After-hours work surcharges
Rush or weekend parts
Temporary heat or cooling requirements
A simple repair costing $1,500 can escalate to $3,000 to $5,000 or more in a heartbeat when the system suddenly fails.
2. Equipment Life Span
HVAC systems are made to last a specific number of years if they are taken care of regularly. When the time frames aren't reached or the system gets older than it was supposed to, the effects can be huge:
RTUs that should last 20 to 25 years may only last 12 to 15 years.
Compressors may go down much more often.
Motors, sensors, and heat exchangers wear down and break down in different ways.
Faster replacement schedules raise capital costs and make long-term planning harder.
3. Energy Inefficiency (The Cost That Doesn't Show Up)
A system's overall efficiency will go down if the coils are dirty, the belts are old, the sensors are failing, the airflow is blocked, the refrigerant is leaking, or the temperature is set too high.
Even slight changes can cause:
5–15% more energy use - temperatures that aren't always the same across the property
more tenant complaints and calls
People sometimes blame bad weather or tenant conduct for these extra costs, which show up on monthly electricity bills.
4. How tenant happiness and productivity affect each other
The reliability of a commercial HVAC system has a direct effect on how comfortable tenants are.
Downtime can cause:
Lost productivity or service interruption
Complaints from tenants
Service credits or discounts
Non-renewals of leases
HVAC downtime is often one of the top three concerns from tenants in offices, stores, and factories.
5. Code, insurance, and risk of liability
Not keeping up with HVAC maintenance can potentially cause:
Failed inspections by the city or insurance company
Trouble with insurance claims
Not following the rules of the Ontario Building Code or the TSSA
At its worst, putting off maintenance can make owners responsible for tenant complaints or an unforeseen system breakdown.
A Real-Life Example from Toronto (Not an Extreme Case)
Type of building: a mid-rise commercial office building with retail and office tenants
HVAC System: 25 year old rooftop unit (RTU)
Preventive repair/service was put off: $1,000–$2,000
Failed during high summer daytime cooling demand
Emergency repair + interim cooling rentals: $8,000–$10,000
Complaints from tenants and service credits or discounts given
The system was rebuilt five years sooner than expected
In short: The problem not only costs a lot more up front, but it also sped up capital spending and made tenants even more unhappy.
Letting Your Building Owner Know
One of the most annoying things about this situation is that deferring maintenance looks like a clear "win" at the time, but it can have tremendous negative effects. Property managers know this from experience, but it's hard to make owners and brokers who are bent on cutting costs understand.
Here are some useful methods to talk about the problem:
Delaying maintenance doesn't lower costs; it merely moves the risk.
This spending is keeping the value of the assets safe and stopping unnecessary capex acceleration.
We're keeping track of how predictable we are
It's best to give a high/low estimate range than to get stuck on the specific cost. This lets the conversation transition from "maintenance or no maintenance" to "risk vs. control."
When is it okay to put off HVAC maintenance?
Let's be clear: putting off maintenance isn't always the incorrect thing to do.
In fact, we often suggest putting off maintenance when the building is going to be rebuilt or the owner has a clear and funded plan to replace the whole system in the next year or two. The main distinction in those circumstances is "informed" deferral versus "accidental" neglect, and being able to explain that to the correct individuals.
Things You Can Do to Cut Down on Deferred Maintenance Today
If you wish to start dealing with this problem in your own buildings:
Get a basic HVAC condition check every few years at the very least
Make sure your maintenance plans are in line with your plans for replacing capital
Take care of small problems as they come up so they don't turn into big ones
Work with a business HVAC company that knows how to prepare for long-term assets.
The Bottom Line on Maintenance That Is Put Off
Every time you put off HVAC maintenance, it can feel like a pleasant, easy win. But when systems do fail or need to be replaced completely in Toronto's harsh climate, the real cost of such choices may be very high for building owners and property managers.
In most circumstances, a planned and preventative maintenance plan with a reliable provider will always cost less overall, result in fewer emergency calls, and make tenants happier and more likely to stay. If you're not sure if putting off maintenance is actually saving you money or costing you money in the long run, an experienced assessment can help you figure that out before your system makes a final, expensive decision.







