Maximizing Comfort and Efficiency in Your Laval Duplex: Which Ventilation Solution Should You Choose?
In a duplex in Laval, the question of whether to choose centralized ventilation or individual ventilation might seem technical, but it plays a key role in your building’s comfort, air quality, and energy efficiency. At AirGreen, we work every week on similar properties across Laval and elsewhere on the North Shore, helping homeowners and property managers find the most suitable HVAC solution for their specific needs. This article offers you an in-depth analysis, drawn from our real-world experience, to help you make the right choice.
Understanding Ventilation Systems: Centralized vs. Individual
What Is a Centralized Ventilation System?
A centralized ventilation system relies on a network of ducts and a main unit (often integrated into a central heat pump system or air exchanger) that distributes fresh air throughout the duplex via air vents. This is the most uniform solution to ensure consistent airflow across the entire building.
And What About Individual Ventilation?
Individual ventilation, on the other hand, means each unit of the duplex (or even each room) has its own device: a wall-mounted heat recovery ventilator (HRV), a decentralized air exchanger, or even a kitchen hood that vents outside. This approach allows for independent control in each unit, which can be beneficial when two families are living completely separately.
Real-World Example: Installation of a Centralized Ventilation System in Laval by AirGreen
We recently completed the installation of a centralized ventilation system with a VENMAR EVO5 700 HRV air exchanger in a duplex in Laval, specifically in the Chomedey neighborhood. The client wanted to improve the indoor air quality while minimizing long-term maintenance costs.
The Challenge: Limited Configuration and Two Rental Units
The building had two separate rental units, with a single mechanical room located in the basement. The challenge was to install a system that could ventilate both floors equally, while respecting noise constraints and keeping energy consumption low.
The AirGreen Solution: A VENMAR System with Independent Zoning
We chose the VENMAR EVO5 700 HRV air exchanger, a model known for its capacity to deliver up to 700 CFM and for its excellent heat recovery efficiency. With the addition of a dual-zone control system, each unit now has its own wall-mounted controller, allowing independent airflow management, while benefiting from a single central unit (less noise, improved efficiency, simplified maintenance).
Comparison: Centralized vs. Individual Ventilation in a Duplex
| Criteria | Centralized Ventilation | Individual Ventilation |
|---|---|---|
| Uniform air quality | Excellent throughout the building | Varies based on usage of each individual device |
| Noise | Reduced thanks to well-insulated central unit | Sometimes noisy depending on the unit installed |
| Installation | More complex, requires ductwork | Simpler, no duct network needed |
| Maintenance | Less frequent, centralized | Each unit must be serviced separately |
| Initial cost | Higher | Lower installation cost |
| User flexibility | Less personalized per unit | Very flexible, ideal for separated living spaces |
When Should You Choose Centralized Ventilation in a Laval Duplex?
Go for a centralized system if:
-
You are the sole owner of the duplex and manage all the units;
-
You want to reduce noise and avoid maintaining multiple systems;
-
You have enough space in your mechanical room for the central unit;
-
You plan to integrate the ventilation system with a central heat pump or electric furnace.
At AirGreen, we recommend this approach in 75% of the duplexes we visit in Laval, especially when comfort and air consistency are a priority.
Individual Ventilation: Ideal for Separately Rented Duplex Units
On the other hand, an individual ventilation solution might be the right choice if:
-
Each unit is rented to different tenants with different lifestyles;
-
You are looking for a faster and less invasive installation;
-
You have limited space for ductwork or central equipment.
For instance, we recently installed two VENMAR AVS SOLO 2.0 wall-mounted HRV units in a duplex in the Pont-Viau neighborhood. Each unit is now independently controlled, allowing tenants to manage their own comfort without affecting the other unit.
Subsidies and Energy Efficiency: What You Should Know
Several subsidy programs, including Hydro-Québec’s LogisVert program, can help fund the installation of high-performance ventilation systems, especially if paired with a heat recovery ventilator (HRV). Grants can reach up to $1,000 or more, depending on the model and context.
Our AirGreen technicians assist you with grant applications, providing complete documentation and a turnkey service in Laval and across the North Shore.
Practical Tips Before Installing Your Ventilation System in Laval
-
Have your duplex structure inspected: Feasibility depends on wall spacing, ceiling type, and access to the basement or attic.
-
Evaluate the level of autonomy desired by tenants: This will help determine if a centralized or individual system is better.
-
Consider long-term maintenance costs: A well-installed centralized system is often more economical over 5 to 10 years.
-
Look into new hybrid technologies: Some units combine ventilation with heating or cooling functions.
Why Choose AirGreen for Your Ventilation System in Laval?
For over 15 years, we have been installing, repairing, and maintaining ventilation systems in duplexes, triplexes, and multi-unit buildings in Laval, offering tailored solutions that are reliable, quiet, and energy efficient. Our clients value our attentiveness, our ability to work in complex spaces, and our precision with HVAC installations.
Conclusion: Make the Right Choice with AirGreen
Ventilation is a critical component of comfort and air quality in your Laval duplex. Whether you choose a centralized solution or individual units, our AirGreen experts will guide you to the most suitable option, with turnkey service and results that meet your expectations.
Contact us today for a free assessment of your duplex. Together, let’s create a healthier, more efficient indoor environment.