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Michael Thompson
Home Energy Efficiency Specialist

When to service air conditioner Ontario: Should I book AC service now or wait until next spring?

With hot, humid summers across the Greater Toronto Area (GTA), having a properly maintained AC unit before peak cooling demands hit is essential, and knowing exactly when to service your appliance can make a huge difference in terms of its overall performance levels, energy-efficiency rates, reliability, and your indoor comfort levels. 

This guide goes over all you need to know about servicing your air conditioner before the summertime, so you can ensure that your unit is prepared to work optimally in your home, no matter how hot outdoor temperatures become. 

When Should You Service Your Air Conditioner in Ontario?

The best time to book a service call for your home's air conditioning system is in the early spring, before outdoor temperatures begin to rise. By booking your annual appointment early on, you'll be able to have your cooling system inspected, cleaned, and tuned, before it's put under increased strain during the summer months. And, by planning ahead, you can avoid mid-summer breakdowns, and have peace of mind that your air conditioning unit is operating as efficiently as possible, so you can save money on your energy bills. 

Best Time of Year to Service Your AC in Ontario

When it comes to having your air conditioner serviced, choosing the right appointment time can help you improve performance levels, reduce ongoing costs, and make scheduling a lot easier.

Spring AC Maintenance

  • Ideal timing: Ideally, homeowners across the Greater Toronto Area should aim to schedule their AC maintenance appointment in the early spring, between the months of March and May.

  • Prepare system before summer heat: Booking your AC maintenance appointment before the summer heat arrives can help ensure you've got a working unit ready to go at all times.

  • Lower service demand and better scheduling availability: By booking in the spring, when most HVAC companies are in the off-season, you'll be able to schedule your maintenance appointment without delay.

  • Early detection of issues before heavy use: Air conditioner maintenance is a great opportunity for technicians to identify any potential problems with your unit before they turn into costly repairs.

  • Improved energy efficiency before peak cooling season: Ensuring your AC system is clean and optimal will help it run more efficiently during the peak season.

Fall Maintenance and Off-Season Servicing

Fall maintenance appointments offers you another opportunity to keep your air conditioner in good working order following increased use. With a post-summer assessment, skilled technicians can identify wear and tear and prepare your HVAC system for the following year. That said, off-season maintenance is less urgent and won't replace the need to book another air conditioning service the following spring. 

Signs Your Air Conditioner Needs Immediate Service

Even with regular maintenance, your AC unit may show warning signs that it needs to be serviced as soon as possible:

Performance and Cooling Issues

  • AC not cooling properly: This could be due to a mechanical, electrical, or other internal problem.

  • Weak airflow: This suggests you may have a dirty air filter or blower motor malfunction.

  • Uneven cooling in the home: Uneven cooling could be due to leaky ductwork, a dirty air filter, or other airflow issues.

  • Warm air coming from vents: A lack of cool air often stems from low refrigerant levels, or an issue with your system's compressor.

  • System running constantly: Short-cycling occurs due to dirty air filters, low refrigerant levels, and thermostat malfunctions.

  • Increased humidity indoors: When your system isn't removing moisture from the air, it could be due to a dirty filter, low refrigerant levels, or incorrect thermostat settings.

Mechanical and Warning Signs

  • Loud or strange noises like banging, grinding, or screeching.

  • AC leaking water around the indoor unit.

  • Frozen evaporator coils.

  • AC unit is not turning on at all.

  • AC system is short cycling throughout the day.

  • Breaker keeps tripping once your air conditioner turns on.

  • Rising utility bills despite not using your air conditioner any more frequently. 

How Often Should You Service Your AC?

Most homeowners across southern Ontario should schedule AC maintenance at least once a year. However, there are other factors that can affect how often maintenance is required:

  • Heavy usage: If you use your cooling equipment consistently throughout the summer, you may want to consider booking a secondary appointment to ensure it remains optimal.

  • Older appliances: If your cooling system is reaching the end of its life system, certain components may require additional tuning to ensure the system's running smoothly. 

What Happens During an AC Service Appointment?

When you book a a maintenance appointment with an HVAC professional, there are various tasks your technician will complete to ensure your system is clean, safe, and operating efficiently:

Inspection and System Check

  • Full system inspection to identify wear and tear and potential concerns.

  • Thermostat calibration to ensure accurate temperature control.

  • Electrical component check to confirm safety.

  • Refrigerant level check to ensure optimal cooling performance.

  • Airflow evaluation to ensure proper airflow throughout your interior and to maintain your home's air quality.

Cleaning and Performance Optimization

  • Cleaning condenser and evaporator coils to improve heat transfer and energy-efficiency levels.

  • Replacing or inspecting air filters to improve air quality indoors.

  • Clearing condensate drain line to prevent leaks and blockages.

  • Checking blower components to ensure optimal air movement.

  • Testing system performance to confirm the system is energy efficient so you can continue saving on your electricity bills. 

Why Timing Matters for AC Service in Ontario

The timing of your air conditioning service correctly is essential for numerous reasons, including:

  • Avoiding peak summer breakdowns during heat waves.

  • Reducing potential emergency repair costs throughout the summer.

  • Improving your energy efficiency levels during high usage periods to help you save money on your utility costs.

  • Better scheduling availability before peak demand season kicks in right before the summer.

  • Extend the average lifespan of your appliance with preventive maintenance and avoid having to prematurely by a new system.

  • Prepare your air conditioner system for high humidity conditions

Benefits of Regular AC Servicing

Booking a maintenance appointment with an experienced technician offers numerous benefits including:

  • Improved energy efficiency levels.

  • Lower energy bills.

  • Better indoor air quality.

  • Reduced the risk of unexpected breakdowns when you're relying on your unit to keep you and your loved ones cool.

  • A well-maintained system on average, will have a longer system lifespan.

  • Consistent cooling performance no matter how hot temperatures become across southern Ontario.

  • Peace of mind during the summer.

Consequences of Skipping AC Maintenance

Skipping out on professional services for your cooling system can lead to several consequences including:

  • Higher energy consumption, which increases your carbon footprint.

  • Increased repair costs overtime.

  • Reduced cooling performance when you need to stay cool.

  • Poor indoor humidity control, that can cause mould and mildew growth.

  • Shortened system life.

  • Unexpected breakdowns during peak season.

  • Reduced indoor comfort levels. 

When to Book AC Service vs When to Call for Repair

Understanding the difference between maintenance and repairs can help you stay ahead of damages and avoid unexpected expenses long-term.

  • Preventative maintenance should be scheduled to keep your system efficiency levels optimal.

  • Urgent repairs are needed when your system breaks down unexpectedly or shows concerning symptoms like unusual noises, strange smells, and other warnings.

The key difference between these two types of appointments is that maintenance is a preventative measure, while repairs are a reaction to damages that have already occurred. 

Frequently Asked Questions
When is the best month to service an AC in Ontario?
The best time of the year to schedule AC maintenance in Ontario is between April and May. 
How often should I service my air conditioner?
Homeowners across the GTA should aim to schedule a service call for their air conditioner at least once a year. 
Can I service my AC myself?
DIY maintenance tasks like filter changes and removing debris from around the outdoor unit are okay. But other tasks should be left to professional technicians.
Is AC servicing necessary every year?
Yes. Proper care can lead to long term savings and keep your unit in good working order for longer. 
What happens if I don’t service my AC?
Your system's performance levels will decrease over time, leading to expensive repair bills, higher energy bills, and premature replacements. 
How much does AC servicing cost in Ontario?
The cost of servicing across the GTA will vary based on where you live, the availability of technicians, and the current condition of your AC unit.