A simple yet incredibly effective HVAC solution for workplace comfort
In Montréal, where summers are getting hotter and office buildings are often poorly cooled, complaints about indoor temperatures are commonplace. Noise, unpleasant drafts, zones that are too cold or too warm… poorly distributed or inadequate air conditioning can quickly lead to widespread discomfort in the workplace. At AirGreen, we recently worked with a company located in the Saint-Laurent borough of Montréal that had been dealing with this issue for several years. Thanks to one simple technical trick integrated into a broader HVAC modernization project, all complaints were completely eliminated within the first week of our intervention.
A common issue: offices with uneven and uncomfortable air conditioning
The company in question, operating in the financial services sector, had more than 40 employees spread across a 6,000-square-foot office space. Before our intervention, the floor managers were regularly dealing with the following complaints:
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Zones that were constantly too cold, especially near the air vents.
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Lack of cooling in the center of the office, affecting desks located far from the units.
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Noise from the existing system, disturbing employee focus.
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Significant temperature fluctuations throughout the day.
These problems, often caused by poor initial HVAC design, created ongoing employee dissatisfaction, reduced productivity, and premature wear on equipment.
AirGreen’s diagnostics and solutions for optimal HVAC performance
When our AirGreen team was brought in to improve the thermal comfort of this Montréal office, we conducted a full audit of the existing HVAC system. Here’s what we found:
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Wall-mounted AC units were poorly placed, blowing directly onto workstations.
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No zoning or independent temperature control by area.
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System was over 10 years old, inefficient and consuming too much energy.
The simple yet effective trick: adding adjustable laminar flow diffusers
Rather than completely overhauling the system, we opted for a smart and economical approach:
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Installed laminar flow air diffusers, designed to gently direct cool air upward, avoiding direct drafts on employees.
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Added motorized dampers and zoned thermostats, allowing personalized temperature adjustments in each section of the office.
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**Replaced the old wall-mounted units with Fujitsu KZAH wall-mounted heat pumps, 12,000 BTU each, known for their ultra-quiet operation, precise thermal control, and high energy efficiency (SEER 26).
Thanks to this trick, combined with intelligent zoning, the company achieved even temperature distribution without needing major renovation work.
Results: immediate comfort and notable savings
Within the first week after the HVAC installation, managers reported:
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No more employee complaints related to air conditioning.
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Noticeable improvement in focus and comfort, confirmed through an internal employee survey.
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22% reduction in monthly energy bills, thanks to the high efficiency of the Fujitsu KZAH heat pumps.
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Significant drop in ambient noise, due to the ultra-quiet design of the new units (22 dB in sleep mode).
This fast return on investment allowed the company to reallocate budget to other priorities while drastically improving employee satisfaction.
Our practical tips for eliminating HVAC complaints in your Montréal office
Here are our essential recommendations for any office manager or building owner who wants to put an end to air conditioning complaints:
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Avoid direct airflow: favor laminar diffusers or ceiling-mounted vents.
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Create independent temperature zones: adapt temperature settings to the specific use of each space (open areas, private offices, meeting rooms).
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Choose modern systems with low noise levels: some newer wall-mounted ACs, like models from Fujitsu or Gree, are nearly silent.
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Work with certified HVAC professionals: a poor installation can cancel out all the benefits of even the best equipment.
Why choose AirGreen to optimize HVAC comfort in your workspace?
At AirGreen, we understand that office air conditioning isn’t just about “cooling.” It’s about creating a balanced, healthy, quiet, and customizable indoor environment. By entrusting your HVAC project to us, you benefit from:
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Personalized consulting and professional diagnostics, tailored to your exact office layout.
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Reliable, long-lasting equipment, always chosen from the top-performing brands.
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Quick, clean, and discreet installation, minimizing disruption to your day-to-day operations.
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Post-installation follow-up to ensure lasting comfort throughout the year.