Why 70% of Commercial Air Conditioners Are Not Optimized on the South Shore

A Little-Known Reality of Commercial Air Conditioning on the South Shore

On the South Shore of Montreal, the commercial landscape is vast, diverse, and constantly changing. Offices, restaurants, warehouses, grocery stores, schools, daycare centers, private clinics… these buildings all share a common point: they rely on a high-performance HVAC system to ensure comfort, safety, and productivity.

At AirGreen, we intervene every week in buildings where the systems in place — sometimes new — are operating below their actual capacity, consuming too much energy, or suffering from major air distribution issues. The result? A loss of comfort, inflated bills, and premature wear on equipment. This article reveals why 70% of commercial air conditioning systems are not truly optimized on the South Shore, and how to fix it methodically.

The Root of the Problem: Poor Planning From Installation

Oversized or Poorly Calibrated Systems

One of the most common issues we encounter is oversized units. Many businesses opt for a more powerful system “just in case,” without a proper thermal assessment. However, an oversized unit will run on short cycles, cause energy spikes, and shorten its lifespan.

Poor Air Zoning

Another recurring symptom is uneven cooling distribution. Some areas are too cold at the front, while others at the back are stifling. This is often due to poor duct placement or air vents, or the lack of smart multi-zone thermostats.

Installation Without a Proper HVAC Study

The worst-case scenario: an air conditioner installed without a thermal analysis, without a mechanical layout plan, simply to “cool down quickly.” Yet, each building has its own constraints: orientation, occupancy volume, heat-emitting appliances, etc.

Case Study: AirGreen Optimizes a 15-Ton Air Conditioner in Boucherville

Sector: Large commercial space (grocery)
Old system: Lennox 15-ton central air conditioner (installed in 2017)
Identified issues:

• condensation zones at the main entrance

• excessive electricity consumption during heatwaves

• excessive noise in the food preparation area

Steps of Our Intervention:

1. Complete thermodynamic audit

2. Recalibrating airflow through motorized dampers

3. Adding a Lennox iComfort® multizone controller

4. Thorough coil cleaning + duct balancing

5. Staff training for regular HVAC maintenance

Result: 22% reduction in summer energy consumption, significant improvement in client and employee comfort, noise reduction by 8 dB in the critical area.

Optimization Also Requires Preventive Maintenance

HVAC Maintenance: A Neglected Necessity

On the South Shore, we find that nearly one in two commercial clients does not adhere to a HVAC maintenance schedule. This leads to:

• Clogged coils, reducing heat exchange

• Blocked filters, forcing the compressor to overheat

• Poor indoor air quality, impacting both staff and customers

At AirGreen, we offer custom HVAC maintenance plans for businesses, including seasonal inspections, filter replacements, pressure checks, and full cleaning.

Grants Available on the South Shore for Eco-Energy Businesses

Many businesses don’t realize that by optimizing their air conditioning system, they can qualify for grants:

• Hydro-Québec’s LogisVert Program for energy improvements

• Municipal incentives related to commercial building energy efficiency

• Provincial tax credits for green renovations

We assist our clients with grant application processes, providing the required documents and validated technical reports.

What You Can Do Today

Concrete Steps to Take Control of Your HVAC System

1. Have a complete HVAC audit performed by a qualified company

2. Analyze consumption curves from the past summers

3. Check the state of ducts and outdoor units

4. Install connected smart thermostats

5. Schedule a complete maintenance with internal unit cleaning

AirGreen offers a free evaluation for businesses located on the South Shore, including a visual inspection and a summary report with recommendations.

Client Testimonial: Food Factory in Saint-Hubert

“Since AirGreen intervened on our central air conditioning system, we’ve seen an immediate drop in our bill and consistent comfort throughout the production line. This is the first time our HVAC has been working according to our actual needs.”
— Technical manager, food industry, Saint-Hubert

Why Choose AirGreen for Commercial HVAC Optimization on the South Shore

• Experts in installation, maintenance, and optimization of central commercial air conditioners

• Qualified technical team working on most brands, including Lennox, Gree, Daikin and Mitsubishi

• Rapid interventions across the South Shore: Brossard, Longueuil, Saint-Hubert, Saint-Lambert, Boucherville, etc.

• Professional diagnostic equipment (thermography, airflow, static pressures)

• Free estimates and custom HVAC maintenance programs

Conclusion

The majority of commercial air conditioning systems on the South Shore could offer much more comfort and savings with a simple optimization. The problem doesn’t always lie in the equipment, but in its installation, configuration, maintenance, and calibration. At AirGreen, we don’t just install air conditioners: we tailor them to your reality, so they operate at 100% of their potential.