When summer temperatures are climbing, the last thing you want is an air conditioner that’s suddenly on the fritz. Yet many homeowners don’t think about AC maintenance until their system starts blowing warm air, or worse, stops working altogether.

So, how often should you have your air conditioner serviced? Does your AC need annual maintenance?

That’s what the Comfort Zone Services team will cover in this post. We’ll also discuss why AC maintenance matters and what’s included in a professional service appointment.

How Often Should You Service Your AC?

First up, the big question: How often should you have your air conditioner serviced? At Comfort Zone Services, we recommend servicing residential air conditioning equipment at least once per year.

Ideally, homeowners should schedule AC maintenance services in the spring before cooling season begins, and furnace maintenance in the fall before it gets cold.

Spring air conditioner maintenance ensures your system is ready before demand spikes during the hottest days of the year.

However, some homes may benefit from more frequent AC unit maintenance, including households that:

Have pets that create excess hair and dander
Struggle with allergies
Run their AC heavily
Have older HVAC systems
Experience frequent dust buildup

For commercial buildings, retail spaces, and offices, the maintenance schedule is more frequent due to heavier usage and more complex equipment. We recommend servicing commercial HVAC equipment four times per year, or at a minimum, twice annually.

Does Your AC Need Annual Maintenance?

Yes, your AC does need annual maintenance.

Your air conditioner works hard during those Ontario summers. Dirt buildup, worn parts, refrigerant issues, and airflow restrictions can all reduce performance over time.

Skipping yearly service often leads to expensive repairs that could have been avoided with preventative care.

Why AC Maintenance Is Important

Proactive maintenance can save you big. This is because it:

Improves energy efficiency

A dirty system has to work harder to cool your home. Clean coils, proper airflow, and ample refrigerant help your system operate efficiently.

Helps prevent breakdowns

Routine inspections allow technicians to catch worn components before they fail. This prevents your system from breaking down in the middle of summer.

Extends equipment lifespan

Regular maintenance helps your air conditioner last longer, delaying costly AC replacement.

Protects indoor air quality

Dirty filters and buildup inside your system can circulate indoor air pollutants like dust, allergens, and debris throughout your home. Regular AC maintenance and filter changes will boost your air quality, which supports your family’s health and comfort.

Maintains manufacturer warranty

Some HVAC manufacturers require proof of regular maintenance to maintain warranty coverage.

What Is Included in AC Maintenance?

Many homeowners ask, “What is included in AC maintenance?”

A professional air conditioner maintenance appointment typically includes:

Checking and replacing air filters

Dirty filters restrict airflow and reduce efficiency.

Inspecting electrical components

Technicians check wiring, connections, and electrical safety.

Cleaning condenser coils

Outdoor units collect dirt, leaves, and debris that can impact performance.

Checking refrigerant levels

Low refrigerant can reduce cooling capacity and damage your system.

Inspecting evaporator coils

These coils, which help remove heat from your home, need regular inspection.

Testing airflow

Poor airflow may indicate duct issues, blockages, or blower problems.

Cleaning the condensate drain

Clogged drains can cause water leaks and moisture issues. Some systems include safety switches to prevent water damage when drains clog.

Testing thermostat performance

Your technician will ensure your thermostat is communicating properly with your system.

Lubricating moving parts

This helps reduce wear and improve efficiency.

AC Maintenance You Can Do Yourself Between Professional Visits

Professional service is essential, but homeowners can also help maintain their systems between appointments.

Change your air filter regularly

Replace standard filters every 1–3 months, depending on usage, pets, and indoor air quality needs. For a more in-depth look at the types of filters and replacement schedule, read: Here’s How Often to Change Your Furnace Filters

Keep the outdoor unit clear

Regularly remove leaves, branches, weeds, and debris around your outdoor condenser.

Watch for pests

Outdoor units can attract insects and small animals that may damage wiring.

Keep vents unobstructed

Make sure furniture, curtains, and rugs aren’t blocking vents, so air can flow freely.

Monitor your condensate drain

Check that your condensate drain is clear every few months. Some homeowners pour distilled white vinegar down the drain seasonally to kill algae and help prevent clogs.

Signs Your AC Needs Maintenance ASAP

Even if your annual service appointment isn’t due yet, call a professional if you notice:

Weak airflow
Warm air coming from vents
Strange noises
Ice buildup
Higher utility bills
Frequent cycling
Water leaks
Unpleasant odours

These are signs that your system needs immediate attention.

How Do I Find Air Conditioner Maintenance Near Me?

If you’ve been Googling “air conditioner maintenance near me,” don’t simply choose the first name that pops up. Ensure you’re working with a trusted local company.

If you live in Ontario, Comfort Zone Services can help. Our family-owned business has been providing professional air conditioner maintenance services in London and the surrounding areas since 1991.