Qualité d’air et immobilier : comment une bonne ventilation augmente la valeur de votre propriété à Montréal
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Air Quality and Real Estate: How Proper Ventilation Increases the Value of Your Property in Montréal

Smart Ventilation: A Major Asset to Boost Your Property Value

In Montréal’s increasingly competitive real estate market, indoor air quality is becoming a decisive factor in a property's valuation. Beyond layout and location, it’s often the invisible performance of the ventilation system that influences buyers’, inspectors’, and property managers’ perception.

At AirGreen, we see every day how a well-designed, quiet, energy-efficient HVAC ventilation system can make a real difference—not only for a property’s monetary value, but also for how fast it sells or rents. Whether you're a homeowner, investor, or managing a rental property, this article will show you why ventilation deserves your full attention.

A Montréal Reality: Indoor Air Often More Polluted Than Outdoor Air

Air Quality Challenges in Montréal and the South Shore

In several neighborhoods in Montréal, Laval, Longueuil, and on the North and South Shores, residential and commercial buildings suffer from inadequate or poorly designed ventilation. Poorly insulated windows, damp basements, and outdated construction materials all lead to:

  • A build-up of pollutants (VOCs, CO₂, allergens, mold spores).

  • Chronic health issues: fatigue, headaches, respiratory problems.

  • A drop in real estate value during pre-sale inspections.

Real Case: Increasing the Value of a Duplex in Outremont with AirGreen’s HVAC Ventilation

The Situation

A duplex owner in Outremont was preparing to sell. Despite the property being in great shape, multiple real estate agents noted a persistent smell and high humidity in the basement. The estimated value came in about 8% lower than the neighborhood average.

AirGreen’s Intervention

We proposed and installed a centralized Lennox energy recovery ventilation solution:

  • Brand: Lennox

  • Model: Lennox Premium ERV | Dual flow

  • Airflow: 1,200 CFM

  • Efficiency: 92% heat recovery

  • LogisVert Grant Eligibility: eligible for multi-unit building subsidies

Results

  • Complete removal of residual humidity in under 5 days.

  • Improved air quality verified through smart sensors.

  • New property appraisal 11% higher than the initial estimate, or $58,000 in added value.

  • Property sold in less than 3 weeks after our intervention.

Why Proper HVAC Ventilation Truly Increases Perceived Property Value

A Successful Pre-Sale Inspection

Real estate inspectors in Montréal are increasingly trained to analyze ventilation systems, especially:

  • The air exchange rate (measured in ACH).

  • Presence of energy recovery systems (ERV/HRV).

  • Absence of mold or damp spots.

  • HVAC installation quality: ductwork, motors, soundproofing.

A First Impression That Matters

Ambient smell is one of the first things a potential buyer notices. Fresh, neutral, well-ventilated air inspires trust and creates a positive emotional environment, which is essential during the decision-making process.

Tangible Performance That Adds Real Value

Today’s real estate agents know how to highlight:

  • The low energy consumption of modern HVAC systems.

  • The ecological added value: smaller carbon footprint.

  • The opportunity to benefit from LogisVert grants or other energy-efficiency programs.

Types of Ventilation Systems Installed by AirGreen in Montréal

Residential

  • Lennox residential ERV with HEPA filters

  • Centralized multi-zone HRV systems

  • Smart controllers integrated into home automation systems

Multi-unit and Condo Buildings

  • Central duct networks with pressure control

  • Independent ventilation systems for each unit

  • Air quality sensors connected by zone

Commercial and Public Buildings

  • High-efficiency HVAC systems by Lennox and Zephyr

  • UV disinfection modules and carbon filtration

  • Smart management via cloud platforms

Practical Advice for Property Owners and Investors

  • Have your ventilation system inspected every 12 to 18 months.

  • Install CO₂ sensors to monitor air exchange rates.

  • Choose energy recovery systems—durable and eligible for grants.

  • Consider a full HVAC assessment before listing a property for sale.

Why Choose AirGreen for Your Ventilation Projects in Montréal and Across Québec

At AirGreen, our expertise goes beyond installing machines. We assess your building as a whole, taking into account health, energy performance, and long-term property value. With our certified technicians, partnerships with top brands (Lennox, Zephyr, Haxxair), and our data-driven approach, we guarantee an optimized, value-enhancing ventilation system for your property.


Planning a real estate project in Montréal, Laval, Longueuil, or on the North or South Shore? Not sure about your ventilation system’s quality or preparing to sell?

Contact us today for a full audit and custom HVAC ventilation solutions.

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