When Expertise Makes All the Difference in Wall-Mounted Heat Pump Installation in Laval
At AirGreen, we’ve encountered countless situations where clients in Laval had to deal with botched HVAC installations by unqualified or misinformed contractors. These stories are absolutely real, and they highlight how crucial it is to work with a certified, experienced company that pays close attention to detail for any wall-mounted heat pump project. What we’re sharing here isn’t anecdotal—it’s based on real cases we handled completely, ensuring the safety, energy efficiency, and durability of the systems.
Bad Slope, Poor Performance: A Fujitsu KZ Unit Installed Without Proper Drainage in Laval-des-Rapides
The Problem
A client in Laval-des-Rapides contacted us after noticing that her Fujitsu KZ 18,000 BTU wall-mounted heat pump was leaking onto her hardwood floor. The previous installer had failed to provide the necessary slope for condensate drainage, causing water to flow back into the unit.
Our Intervention
We performed a complete repositioning of the indoor unit, applying an optimal 2% drainage slope and inspecting all PVC connections for tightness. We also added a secondary drain pan with a lift pump as a preventive measure—especially useful for walls with minimal exterior pitch.
The Result
Not only did the client see her condensation problems disappear, but she also noticed an improvement in her heat pump’s energy performance, now that it could operate at full capacity without overload.
Oversized and Inefficient: A Gree Lomo Wall-Mounted AC Oversized in a Chomedey Home
The Problem
A homeowner in Chomedey had been advised to install a Gree Lomo 24,000 BTU wall-mounted heat pump for a 500 sq. ft. room. The result? A unit that cycled constantly, leading to premature wear, high electricity bills, and ongoing thermal discomfort.
Our Intervention
After conducting a complete heat load calculation, we recommended replacing the unit with a Gree Lomo 12,000 BTU, much better suited to the room’s dimensions and insulation. We also adjusted the unit’s placement for improved airflow distribution.
The Result
The homeowner experienced a noticeable increase in comfort, lower power bills, and a longer lifespan for the new system.
Drilling into a Load-Bearing Wall: Emergency Repair in a Laval-sur-le-Lac Duplex
The Problem
An inexperienced installer had drilled straight through a load-bearing wall to install a Sharp ZU1 15,000 BTU wall-mounted heat pump, without any structural reinforcement. Cracks appeared soon after, compromising the building’s integrity.
Our Intervention
We reinforced the structure using a certified metal lintel, then relocated the heat pump to a non-load-bearing side wall. All seals were redone using high-performance air and vapor barrier products.
The Result
The client was able to preserve their heat pump investment while ensuring the structural safety of their property.
Electrical Hazards and Code Violations in Duvernay
The Problem
A client in Duvernay had a Tosot 18,000 BTU wall-mounted air conditioner installed, but the power supply came from a temporary extension cord plugged into an indoor outlet (!). The entire setup was non-compliant with the Canadian Electrical Code.
Our Intervention
Our certified technicians installed a dedicated 240V circuit with its own breaker, fully compliant with CSA standards. We also added an outdoor disconnect switch for safe unit maintenance.
The Result
The client avoided a fire hazard and now has a fully compliant, safe electrical setup.
How to Avoid These Mistakes: Our Practical Recommendations
1. Always Request a Personalized Heat Load Calculation
Proper sizing depends on the home’s orientation, insulation level, air volume, and type of construction. It’s never just about square footage.
2. Verify the Installer’s Certifications
At AirGreen, all our installers are TEQ and RBQ certified, and trained to the latest standards from manufacturers such as Fujitsu, Gree, Goodman, Bosch, and Sharp.
3. Choose Proven Brands
The wall-mounted heat pumps we install—Fujitsu KZAH, Gree Lomo and Extreme, Sharp ZU1, Bosch BOVA—are known for their reliability and performance in cold climates.
4. Ensure Electrical Compliance and Proper Drainage
Our installations always include a complete inspection of electrical circuits, and we provide professional-grade drainage solutions—even for complex scenarios.
Why Laval Residents Trust Us
At AirGreen, our reputation is built on the quality of our corrective work. We don’t just replace poorly installed systems—we rebuild trust, enhance our clients’ comfort, and ensure every wall-mounted heat pump is durable, quiet, safe, and energy-efficient.
Available Grants to Fix a Bad Installation
Did you know that several programs, such as Hydro-Québec’s LogisVert Program, can offer up to $2,172 in grants for replacing a non-certified heat pump with an eligible model? Our specialists will guide you through the grant application process, ensuring you get the most out of your investment.
Conclusion: Fixing the Past, Investing in the Future
A bad start doesn’t mean a disastrous end. With true HVAC experts, you can not only fix past mistakes but also improve your home’s thermal comfort, safety, and energy efficiency in Laval.
Reach out to us today for a free inspection of your current setup. At AirGreen, every detail matters — and every mistake can be turned into long-lasting success.