An exceptional intervention in the heart of Montreal’s heritage: when modern ventilation meets historic architecture
At AirGreen, we’re no strangers to complex technical projects involving HVAC installations, but some jobs truly stand out. This was the case with a recent ventilation installation completed in a historic home in the Plateau-Mont-Royal neighborhood of Montreal. This project perfectly illustrates our ability to blend technological innovation, respect for architectural heritage, and long-term indoor comfort.
A classified building with unique constraints
This century-old home, built in the early 20th century, is a genuine architectural gem. Decorative plaster moldings, original load-bearing brick walls, hand-carved woodwork—every detail had to be preserved. Our mission was crystal clear: install a high-performance, discreet ventilation system without compromising the building’s visual or structural integrity.
In-depth study and precise planning
Before starting the work, our HVAC ventilation experts conducted a comprehensive technical study of the building. It was crucial not only to understand its layout but also to consider the age-old materials, natural airflow, and specific zones that had to be left untouched.
We also collaborated with an architect specializing in heritage conservation to ensure our work complied with all applicable regulations. This multidisciplinary approach is part of our commitment to providing a highly professional HVAC service, even in the most delicate environments.
Choosing the system: efficiency, discretion, and adaptability
The major technical challenge was selecting a system that could deliver balanced ventilation while remaining invisible to the untrained eye. We chose a centralized heat recovery ventilation system (HRV) from the brand Venmar, model EVO5 700 HRV, known for its high energy efficiency and low noise levels.
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Airflow capacity: up to 700 CFM (cubic feet per minute), sufficient to cover all 3 floors of the home.
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Heat recovery efficiency: 85% at 0°C, ideal for Montreal’s harsh winters.
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Energy Star certified, eligible for local grants.
The system was paired with a semi-rigid insulated duct network, hidden beneath floor voids and inside meticulously integrated false ceilings.
A carefully executed job: custom installation
We deployed a team specialized in complex installations and used specific tools to minimize vibrations, protect original materials, and avoid any deformation or damage. Each step was carried out with surgical precision:
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Laser-guided drilling through the brick walls to avoid weakening them.
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Anti-vibration mounts to eliminate sound resonance within the old partitions.
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Diffuser grilles painted to match the exact shade of the moldings, for a flawless aesthetic integration.
Modern comfort without compromising history
Thanks to this custom ventilation installation, the homeowners now enjoy clean, filtered, continuously renewed air, free of excess humidity and without heat loss. This daily comfort is even more remarkable as it’s delivered without altering the soul of the home.
The owner noted a significant improvement in air quality, especially in the upstairs bedrooms, which previously lacked proper ventilation. Additionally, the system is ultra-quiet, an essential feature in such a peaceful environment.
Grant eligibility
Due to the energy efficiency of the installed system, this project qualified for the Rénoclimat Program from the Quebec government, along with technical support from Hydro-Québec. We always assist our clients with the administrative procedures, a complete service that sets us apart.
Our advice for similar projects
If you own a heritage building and are considering upgrading your HVAC system, here are our recommendations:
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Hire ventilation experts with experience working in heritage homes.
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Choose Energy Star certified HRV systems to maximize energy efficiency.
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Request a comprehensive technical assessment before beginning any work to identify constraints and avoid surprises.
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Consider integrating ventilation into a broader energy retrofit project: insulation, sealing, etc.
Why choose AirGreen for your ventilation projects in Montreal
This project is one of many that showcase our expertise in ventilation installation in Montreal, Laval, Longueuil, South Shore, and North Shore. Our approach is based on:
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Advanced technical know-how, no matter the building.
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A qualified team, discreet and respectful of architectural heritage.
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Complete support, from assessment to installation, including grant applications.
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A constant drive to deliver flawless results, both functionally and aesthetically.
More inspiring projects from AirGreen
We’ve completed similar installations in other heritage neighborhoods such as Outremont, Vieux-Longueuil, and Laval-des-Rapides. Every time, we’ve adapted our solutions to the unique realities of older buildings.
Whether it’s central ventilation, wall-mounted or central heat pumps, or hybrid energy-efficient systems, we do everything we can to enhance your comfort without compromising your home’s character.
Conclusion: A discreet but essential modernization
The successful installation of this ventilation system in a historic home in Montreal once again demonstrates AirGreen’s ability to take on even the most ambitious challenges in residential HVAC. If you're looking for a trusted partner for complex ventilation projects, you can count on us.
Contact AirGreen today for a free quote or a personalized assessment of your ventilation, heating, or cooling needs. Together, let’s modernize your comfort while preserving the story of your building.