Preparing your HVAC system for winter is a crucial step to ensure optimal comfort, controlled energy consumption, and extended equipment lifespan. At AirGreen, we’ve developed a proven five-step method that gives our clients in Montréal, Laval, Longueuil, the North Shore, and the South Shore peace of mind throughout the cold season.
Why pre-winter maintenance for your HVAC system is essential
The transition period between fall and winter is a critical time for your central heat pump, wall-mounted air conditioner, or any HVAC system. Skipping this preparation can lead to:
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Lower energy efficiency
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Expensive breakdowns
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Shortened equipment lifespan
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Poor indoor air quality
That’s why we strongly recommend a professional cleaning and preventive maintenance service before the cold really sets in.
Step 1: Full inspection of the HVAC system
Before we do anything, our certified technicians perform a comprehensive inspection:
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Wall-mounted or central heat pumps: checking the compressor, coil, indoor and outdoor units.
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Heating systems: checking the burner, heat exchangers, and blower.
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Ventilation units (HRV/ERV): inspecting the ducts, filters, and fans.
Real example in Montréal: During a recent visit to Outremont, we detected early frost build-up on a FUJITSU KZAH R-32 heat pump due to poor maintenance. Thanks to a prompt inspection, we resolved the issue before it damaged the compressor.
Step 2: Thorough cleaning of all components
A professional HVAC cleaning removes dust, debris, and allergens that build up over time:
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Outdoor units: clearing the fans, pressure washing the coil.
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Indoor filters: cleaned or replaced depending on condition.
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Ventilation ducts: dust removal and disinfection to improve air quality.
In Laval, during a maintenance call on a GOODMAN R-32 central system, we removed a large amount of vegetation debris clogging the outdoor unit, which had been reducing its energy performance by 30%.
Step 3: Winter calibration and adjustments
Every HVAC system needs to be reconfigured for the winter season:
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Smart thermostats: programmed to match outdoor temperatures and household routines.
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Short or long cycles: adjusted to ensure consistent comfort.
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Airflow control and zone balancing for multi-zone systems.
On the South Shore, a client in Brossard complained of discomfort in the master bedroom. By adjusting a damper in their Bosch BIVA IDS Premium R-454B central heat pump, we were able to rebalance the airflow and ensure even heating.
Step 4: Verifying energy efficiency
We test the system to detect any loss of efficiency:
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Checking actual SEER/HSPF performance of the equipment.
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Analyzing electricity consumption rate during heating cycles.
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Detecting thermal leaks in the ducts or around the unit.
During a visit to Sainte-Thérèse, our team discovered that a Gree Extreme 24,000 BTU heat pump was using more energy than expected. Simply adding insulation to the main duct resulted in up to 18% energy savings during winter.
Step 5: Usage tips and maintenance planning
Once the system is ready, we educate our clients for optimal usage:
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Filter replacement frequency
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Habits to avoid overloading the unit
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Recommended maintenance schedule (monthly, seasonal, yearly)
We also offer the AirGreen Annual Maintenance Plan, which provides priority service, discounts, and personalized follow-up.
What sets AirGreen apart: expertise, precision, and proximity
Our team stands out thanks to:
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Technicians trained on the latest HVAC technologies
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Hands-on experience in thousands of homes and commercial spaces across Montréal, Laval, Longueuil, the North Shore, and the South Shore
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Tailored service, transparent and focused on energy efficiency
In Longueuil, we helped a family prepare their combined HVAC system (heat pump + HRV) for winter. Thanks to our comprehensive approach, they were able to take advantage of the Hydro-Québec LogisVert program while also improving indoor air quality.
Common mistakes to avoid before winter
Here are the most common mistakes we see and fix regularly:
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Waiting for the first snow to call a technician
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Assuming a new heat pump doesn’t need maintenance
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Cleaning filters without treating ducts or coils
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Thinking a space heater is enough without checking the main unit
A complete preventive service always costs less than an emergency repair.
AirGreen, your HVAC partner for winter
Preparing your HVAC system for winter isn’t optional — it’s essential. Thanks to our detailed method, our clients enjoy maximum comfort, reduced energy bills, and equipment that works perfectly all season long.
Whether you’re in Montréal, Laval, Longueuil, the North Shore, or the South Shore, we respond quickly, efficiently, and always with a focus on quality work.
Contact us today
The best time to book your HVAC winter maintenance is before the temperature drops. Take advantage of our local expertise, fast response, and personalized recommendations.
Contact AirGreen today for a complete HVAC cleaning service and start your winter off right.