Optimizing indoor comfort while saving on energy bills is a priority for many homeowners and property managers. However, a poorly planned or poorly executed central heat pump installation can quickly lead to costly problems, underperformance, and even premature breakdowns. At AirGreen, thanks to our proven expertise in residential and commercial HVAC across Montréal, Laval, Longueuil, the North Shore, and the South Shore, we've seen countless cases where avoidable mistakes ended up costing clients significantly. Here are the 7 most common mistakes during a central heat pump installation, along with our expert recommendations to avoid them effectively.
Poor assessment of the building’s heating and cooling needs
The first mistake, often made by inexperienced or rushed installers, is not performing a precise load calculation. Every building has its unique features: insulation, orientation, square footage, ceiling height, window types… Installing a unit that is too powerful or too weak results in:
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Excessive energy consumption
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Premature wear and tear on components
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Uneven comfort between rooms
At AirGreen, we use professional software and detailed on-site measurements to recommend a properly sized system, whether it’s a Fujitsu, Bosch, Lennox, Goodman, Trane, or Gree heat pump.
Ignoring the ductwork configuration
Even with a top-quality heat pump, a poorly designed or outdated duct network will restrict airflow and prevent the unit from operating efficiently. We often encounter undersized ducts, poor insulation, or air leaks—especially in older homes across Montréal or Laval.
We always perform a full inspection of the air distribution system, and if needed, we adjust or replace duct sections to ensure optimal airflow and even heating or cooling.
Installing a unit that doesn’t qualify for available grants
With the generous incentives offered by Hydro-Québec (LogisVert Program) and other provincial or municipal programs, overlooking energy rebates and subsidies can represent a significant financial loss for the homeowner.
For example, an ENERGY STAR certified central heat pump such as the Bosch BOVA or IDS Premium R-454b may qualify for over $5,000 in grants, depending on the project. We guide our clients in selecting the right system to meet the eligibility criteria, while still matching their specific needs.
Choosing a company without local HVAC experience
An unlicensed installer or someone unfamiliar with Québec construction codes, the specific climate conditions of the North Shore, or the requirements of energy-efficiency programs, can jeopardize the entire installation.
At AirGreen, we’ve completed hundreds of central heat pump installations in Longueuil, Brossard, Terrebonne, Repentigny, Laval, and beyond, all while following the strictest standards in the industry.
Forgetting about maintenance access and ease of servicing
A central heat pump that’s poorly placed, hard to access, or installed without future maintenance in mind, quickly becomes problematic. It impacts:
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The lifespan of the equipment
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Maintenance convenience
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System efficiency
We always plan installations with proper access for coil cleaning, filter replacements, and any necessary service calls in the future.
Underestimating the insulation and airtightness of the building
Even the best HVAC system can’t compensate for poor insulation or significant air leaks. Overlooking this reality undermines the system’s performance and results in higher energy bills.
We systematically advise clients on building envelope upgrades before or after the installation to help them get the most from their investment.
Not including smart thermostats or zoning systems
Failing to include programmable thermostats or zoning systems in a central HVAC installation is a missed opportunity. These technologies allow for:
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Significant energy savings
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Better personalized comfort room by room
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Remote control via mobile apps
We often integrate smart solutions such as Ecobee, Honeywell, or Nest thermostats, all perfectly compatible with the systems we install.
AirGreen case study: successful installation in Sainte-Thérèse (North Shore)
A duplex owner contacted us after suffering from a failed installation by another company: poor plenum design, excessive noise, and overheating in some zones. We:
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Performed a comprehensive diagnostic
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Reconfigured the duct system
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Replaced the outdoor unit with a Bosch IDS Premium 5-ton model
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Integrated everything with a dual-zone system and a smart thermostat
Result: optimal comfort, a 27% drop in consumption, and total client satisfaction—plus over $4,320 in grants secured with our administrative support.
Why choose AirGreen for your central heat pump installation?
Our expertise is built on years of real-world experience across Montréal, Laval, Longueuil, the North Shore and South Shore. We provide:
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A carefully selected range of high-end equipment (Fujitsu, Lennox, Bosch, Gree…)
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A free, accurate thermal assessment
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Clean, durable, and optimized installations
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Full administrative support for grant applications
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Fast, personalized after-sales service
Practical tips before installing your central HVAC system
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Request a detailed quote with a full thermal analysis and installation plan.
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Verify RBQ certification and insurance of the company.
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Ensure system compatibility with government incentives.
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Check the condition of your current ductwork and consider upgrades if needed.
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Prepare your mechanical space to allow easy access and future servicing.
Conclusion
Installing a central heat pump is a major investment in your comfort, your budget, and your property’s long-term value. By avoiding these common mistakes and partnering with a trusted company like AirGreen, you ensure long-lasting success for your HVAC project.