Maximizing the efficiency of a ducted system in a multi-storey home: a challenge we expertly master at AirGreen
Installing a ducted HVAC system in a multi-storey home on the North Shore is a discreet and high-performance solution to ensure optimal thermal comfort on every level of the residence. However, this type of configuration requires advanced technical expertise to guarantee even airflow distribution, maximum energy efficiency, and quiet, long-lasting operation.
With that in mind, we recently carried out a custom HVAC installation in a multi-storey single-family home located in Blainville, on the North Shore of Montréal, using a ducted system by Goodman, model ARUF, combined with an outdoor heat pump GSZB.
A complex project adapted to the realities of multi-storey homes
The challenge of distributing air between floors
In multi-level houses, the main challenge of a ducted system lies in air stratification: hot air naturally rises while cold air tends to fall. This natural dynamic can lead to temperature imbalance between floors, which impacts comfort and increases energy consumption.
For this project, we had to design a duct network that could evenly distribute the conditioned air to the upstairs bedrooms while maintaining a comfortable temperature in the living room and kitchen on the main floor.
Precise airflow calculation and zoning
We carried out a full thermal load analysis of the building and adjusted the airflow for each room based on its size, orientation, and use. Thanks to a multi-zone thermostat system, occupants can now manage temperature independently on each floor, optimizing both comfort and energy savings.
Technical description of the installed system
Selected equipment: performance and reliability
For this home, we installed a GOODMAN ARUF37C14 ducted air handler, combined with a GSZB36041 outdoor heat pump rated at 3 tons (36,000 BTU). This high-efficiency system, using the new R-32 refrigerant, delivers excellent performance all year long, both for heating in winter and cooling in summer.
Key system features:
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Capacity: 36,000 BTU
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SEER (cooling): up to 16
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HSPF (heating): up to 9
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Refrigerant: R-32 with low environmental impact
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Zoning system compatible
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Quiet and discreet (fully concealed installation)
Duct network design
The ducted unit was installed in the crawl space of the basement, with the R-8 insulated ducts running up to the ceiling of the first and second floors. Air is distributed through linear diffusers in living areas and standard grilles in the bedrooms, ensuring a steady, even and quiet airflow.
Key steps of our intervention on the North Shore
Step 1: Complete home assessment
Our team visited the home to conduct a comprehensive HVAC diagnostic: volume measurements, thermal load calculations, and identification of architectural constraints. We paid particular attention to insulation materials and the sun exposure of windows.
Step 2: Custom system design
We then created a custom air distribution plan. Using thermodynamic modeling software, we simulated the system’s behavior under various indoor and outdoor conditions.
Step 3: Professional installation
The installation was completed in five business days, including:
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Integration of the air handler and outdoor heat pump
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Installation of rigid and flexible ducts
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Addition of acoustic silencers
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Electrical wiring with connected digital thermostat
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System commissioning and testing
Available grants for this type of installation
Thanks to its high energy efficiency, this system is eligible for Hydro-Québec’s LogisVert rebates, which can reach up to $1,860, depending on the region and type of residence.
We assisted the client throughout the administrative process, from the prequalification request to the final submission of compliance documents.
Result: perfect comfort on every floor
Today, the occupants of this Blainville home enjoy:
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Uniform temperature throughout the house, even during extreme outdoor weather
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A quiet and invisible system that doesn't interfere with the interior design
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Significant reduction in energy consumption
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Simple, smart control through a Wi-Fi connected thermostat
Why trust AirGreen for your HVAC installations on the North Shore?
A tailored approach backed by real results
At AirGreen, we understand that every home is unique. That’s why we design our installations based on the specific realities of each building, considering its layout, energy requirements, and the comfort goals of the occupants.
HVAC experts available across the North Shore
Whether you're located in Blainville, Boisbriand, Lorraine, Terrebonne, Mascouche, Mirabel or Deux-Montagnes, our technical team is ready to act quickly for any installation, upgrade, or HVAC maintenance project.
Additional services offered:
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Seasonal maintenance of ducted systems
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Upgrades of existing ductwork
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Energy performance assessments
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Assistance with grant applications
Practical tips to optimize your ducted system
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Clean your filters every 3 months: a clogged filter reduces system performance.
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Have your ducts inspected annually: leaks or poor sealing = performance loss.
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Invest in a smart thermostat: better zone management and energy savings.
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Ensure proper insulation: especially for ducts running through attics or basements.
Conclusion
Installing a ducted HVAC system in a multi-storey home requires sharp expertise to guarantee comfort, performance, and durability. At AirGreen, we bring our know-how to your projects across the North Shore, with innovative, efficient solutions tailored to your lifestyle.
Want to learn more about GOODMAN ducted heat pump systems, their installation, maintenance, or eligible rebates? Contact us today to schedule your free in-home assessment.