Practical advice, based on real cases in Montreal, Laval, and the South Shore, to make your HVAC system last twice as long
At AirGreen, we install air conditioners every day in Montreal, Laval, Longueuil, the North Shore, and the South Shore. But what we love even more is helping you extend their lifespan to the maximum. Thanks to our on-the-ground expertise and our support through hundreds of installations each year, we’ve identified 3 little-known but highly effective tips to prevent premature wear and tear on your air conditioning system. These recommendations come directly from our experience in residences, businesses, and multi-unit buildings throughout the metropolitan area.
Why These Tips Are Different from What You Read Elsewhere
Unlike the generic advice you may find online, the tips below are based on real-life interventions performed by our teams, with concrete findings in the field. By following these simple practices, you could add up to 10 years of optimal operation to your air conditioner — while saving on unexpected repairs and energy consumption.
1. Clean the Outdoor Coil Properly (and Most Importantly, at the Right Time)
One of the most common mistakes we encounter during HVAC maintenance in Laval or Longueuil is the sloppy or untimely cleaning of the outdoor unit, particularly the condenser coil.
Why It’s Crucial:
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Dust, pollen, leaves, and urban debris clog the airflow, forcing the compressor to work harder.
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This increases electricity consumption by 10 to 30%.
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Over time, this causes overheating that can burn out the motor.
Our AirGreen Expert Tips:
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Have the coil inspected and cleaned twice a year, ideally in the spring and late summer.
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Use a low-pressure water jet, spraying from top to bottom to avoid damaging the fins.
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Avoid harsh chemicals that can corrode the materials.
Recently, we extended the lifespan of a Gree wall-mounted air conditioner installed in Boucherville by 7 years simply through a thorough cleaning of the condenser coil and repositioning the unit to avoid dust buildup.
2. Never Underestimate the Importance of the Indoor Filter... Even If It Doesn’t Look Dirty
Think your indoor filter is still good because it doesn't look visibly dirty? That’s a common mistake.
What We Found in the Field:
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In an apartment in Laval, a 12,000 BTU Sharp ZU1 wall-mounted AC was losing 20% of its performance while the filter appeared "clean." In reality, the pores of the filter were clogged with microfibers that weren’t visible to the naked eye.
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The static pressure in the unit was gradually rising, causing premature wear of the blower motor.
Our Recommendations:
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Clean the filters every month in summer, even if you live in a clean environment.
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Replace them annually if the model allows.
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Invest in a washable electrostatic filter if your unit allows it: it captures fine particles better and cleans easily.
3. Install an Intelligent Operating Timer
This is probably the least used tip, yet one of the most effective. By optimizing your unit’s operating time, you not only reduce wear and tear but also your bill.
Real-life Case in Montreal:
A family in Plateau Mont-Royal was running their Fujitsu KZAH R32 wall-mounted AC in automatic mode 24/7. As a result, the compressor was running through the night even when the ambient temperature had already stabilized. We installed a programmable timer via a mobile app, and the operating cycles were reduced by 40%, while maintaining the same comfort level.
Results After One Year:
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Energy consumption reduced by 22%.
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Fewer start/stop cycles, meaning less mechanical wear.
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Quieter operation, as it avoids unnecessary nighttime restarts.
Our AirGreen Recommendations:
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Set a timer with time slots based on your habits (e.g., 4 PM to 10 PM).
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Avoid continuous automatic mode unless it's an extreme heatwave.
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Use the "eco" mode at night if your model offers it.
Bonus: What You Absolutely Must Avoid to Preserve Your Air Conditioner
Here are a few practices that we strongly advise against, as they harm your air conditioner's longevity:
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Storing objects in front of the outdoor unit (plants, bikes, tools).
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Not hiring a certified technician for installation or repairs.
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Leaving an air conditioner in heating mode during winter without checking for frost on the outdoor unit.
Why Call AirGreen for Your HVAC Maintenance?
We’re not like other companies. At AirGreen, every maintenance service is tailored to the climate, model, usage, and environment. Our certified technicians cover the entire Greater Montreal area with:
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Fast and efficient on-site interventions.
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Flexible annual maintenance contracts.
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Practical advice to improve your energy efficiency.
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Quick assistance in case of breakdowns or heatwaves.
Whether you're in Montreal, Laval, Longueuil, the North Shore, or the South Shore, we've already seen your situation, and we have the solutions.