In Montréal, Laval and the Suburbs: Optimize Room-by-Room Comfort with a Custom HVAC Solution
The zoned configuration, also known as zoning, is an HVAC installation strategy still underused in homes across Greater Montréal, Laval, the South Shore, and the North Shore. Yet, in many cases, this approach isn’t just beneficial — it’s virtually essential to ensure thermal comfort, energy performance, and the longevity of your central heat pump. At AirGreen, we regularly integrate zoned systems into our installations, especially in multi-storey homes, buildings with multiple levels, or residences with significant sunlight exposure variation.
What Is a Central Heat Pump with Zoning?
A zoned system allows you to independently control the temperature of different areas of a single home or building. Instead of heating or cooling the entire space uniformly, a zoned central heat pump directs airflow via motorized dampers installed in the ducts, controlled by separate smart thermostats for each zone.
In Which Cases Is Zoning Recommended — or Even Essential?
1. Multi-storey Homes or Homes with a Mezzanine
Two- or three-storey homes often have significant temperature imbalances:
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The ground floor stays cold
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Bedrooms upstairs overheat in summer
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Staircases act as thermal transfer columns
Zoning corrects these imbalances by allowing each level to be temperature-controlled independently.
2. Homes with Sunrooms, Large Windows or Highly Exposed Rooms
In many of our projects in Longueuil and Blainville, we observed large temperature differences between south-facing rooms and shaded areas. Zoning makes it possible to:
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Reduce cooling in cooler rooms
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Increase heating in sun-exposed spaces without overconsuming
3. Finished Basements or Intergenerational Homes
Some clients want to maintain a different temperature in their basement, often cooler, or in an independent living area. Zoning allows them to:
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Ensure comfort for seniors or teens in a separate zone
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Turn off heating or cooling in unoccupied spaces
4. Homes with Cathedral Ceilings or Varying Air Volumes
Air volume discrepancies between rooms can be a real challenge for traditional HVAC systems. Thanks to zoning:
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Each space receives the airflow suited to its volume
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The central heat pump operates more evenly and lasts longer
Case Study: Zoned Central Heat Pump Installation in Repentigny
Three-storey home with a mezzanine and cathedral ceiling:
Our team installed a 36,000 BTU Lennox EL18XPV central heat pump with a 3-zone independent configuration, each managed by Ecobee thermostats.
Initial problems:
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Overheated mezzanine living room
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Cold bedrooms in the basement
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High electricity bills
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General discomfort despite a powerful heat pump
AirGreen’s solutions:
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Full reconfiguration of the duct network
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Integration of Lennox Harmony III motorized dampers
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Zone programming based on occupancy schedules
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Calibration of the outdoor unit to optimize static pressure
Results:
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Temperature stable to within ±1°C in each zone
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25% reduction in monthly energy consumption
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Total customer satisfaction and greatly improved daily comfort
Why Choose AirGreen for a Zoned Installation?
Zoned HVAC installation requires a high level of technical expertise. At AirGreen:
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We perform a precise thermal analysis for each zone
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We choose the right equipment: Bosch, Lennox, Trane, or Carrier depending on the case
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We size every motorized damper based on required airflow
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We ensure seamless integration with smart thermostats
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We provide local after-sales service across Greater Montréal
Mistakes to Avoid in a Zoned Installation
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Installing a heat pump without considering minimum airflow per zone
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Poorly positioning temperature sensors
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Using thermostats incompatible with motorized dampers
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Neglecting duct maintenance, which can block dampers
Available Grants: A Pleasant Surprise
The zoned configuration of a central heat pump is eligible for Hydro-Québec’s LogisVert program, provided the equipment meets energy efficiency standards.
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Possible grant amount: up to $2,520
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Applies to systems with centralized ducts and automated zoning
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AirGreen provides full support for your grant application, free of charge
Conclusion: A Smart Solution That Should Be Considered More Often
The zoned configuration of a central heat pump is far more than a luxury — it’s often the key to balanced comfort, better energy efficiency, and longer HVAC system life. If you live in Montréal, Laval, Longueuil, the North Shore, or the South Shore, and you're dealing with uneven temperatures, contact AirGreen for a free personalized assessment.