Adapting the central heat pump to the type of home: a crucial issue for comfort and energy efficiency
At AirGreen , we know that choosing a central heat pump isn't a one-size-fits-all solution. Every home has unique structural features that affect HVAC performance. One of the most important distinctions to consider is between a bungalow (a single-story home) and a two-story home . These two types of homes, common in Montreal , Laval , Longueuil , and on the North and South Shores , require very different technical approaches to central heat pump installation .
Understanding the Structural Differences: Bungalow vs. Two-Story House
A bungalow is characterized by a living space spread entirely over a single level. This type of home is often more compact and presents fewer challenges when it comes to air distribution. In contrast, a multi-story house has significant vertical volumes, often with notable temperature differences between the ground floor and the upper floors. This requires a central heat pump capable of managing these variations in a precise and balanced manner.
Which capacity to choose? The importance of thermal calculation
For each project, our team performs a personalized heat load calculation . This step determines the required BTU capacity based on the surface area, insulation level, ceiling height, number of windows, and solar orientation. For example:
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A 1200 sq ft bungalow might require a 36,000 BTU central heat pump, especially if the insulation is recent.
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A two-story, 2000 sq ft home with multiple bedrooms upstairs will require a 48,000 BTU or higher system, sometimes in a dual-zone configuration.
Air distribution: a major issue in multi-story houses
In a multi-story house, air distribution must be particularly careful to avoid temperature differences between floors. At AirGreen, we often recommend:
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Installation of well-insulated ducts in interior walls or false ceilings.
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The use of smart multi-zone thermostats , allowing precise control by floor.
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In some cases, a hybrid system combining a central heat pump and wall-mounted mini splits in areas that are difficult to cover.
Concrete examples of AirGreen installation
Project in Laval – 1300 sq ft bungalow
We recently installed a Bosch BOVA 36,000 BTU R-454b central heat pump in a 1980s bungalow located in Laval. Thanks to newly redone insulation and energy-efficient windows, we were able to maintain exceptional energy efficiency while ensuring uniform thermal comfort in each room. The system is eligible for the LogisVert grant , which saved the client $2,240 (at the rate then in effect) .
Project in Longueuil – 2100 sq ft two-story house
In a two-story house located in Longueuil, we opted for a FUJITSU AIRSTAGE KZAH series 48,000 BTU R-32 central heat pump , with multi-zone control. The biggest challenge: maintaining a consistent temperature between the living room on the ground floor (full sun) and the bedrooms located on the north floor. We designed an optimized duct network , and installed an electronic zoning system that automatically adjusts the airflow. The result: perfect comfort , summer and winter, with a 37% reduction in energy costs.
Common Mistakes to Avoid
When choosing a central heat pump without considering the type of house, certain mistakes can affect the overall performance:
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Oversized or undersized capacity : in both cases, the system will be inefficient and energy-intensive.
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Incorrectly sized or poorly insulated ducts : common in multi-story houses, they cause poor heat distribution.
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Lack of zoning : In multi-story homes, this can lead to differences of 3 to 5 degrees between floors.
Practical advice for choosing the right central heat pump
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Call a certified professional like AirGreen for an on-site thermal diagnosis .
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Choose reliable brands: we install high-performance models from Fujitsu, Bosch, Goodman, Gree , all compatible with Hydro-Québec subsidies .
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Consider regular maintenance of your HVAC system, especially in multi-story homes where filters load faster.
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Request a system with intelligent control to manage temperatures by zone or floor.
Grants and incentives available
Many customers are unaware that they can get up to $5,000 in grants for the installation of a central heat pump. Here are the main programs available to homeowners in Montreal, Laval, Longueuil, the North Shore, and the South Shore :
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Hydro-Québec LogisVert Grant
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Rénoclimat (insulation and windows)
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LogisVert 5% bonus for multiple measures
Our team provides free support to maximize your eligibility for these programs, helping you choose a model that meets the requirements and build your file.
Why choose AirGreen for your central heat pump installation?
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Customized thermal analysis for each type of house
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Professional installation and full warranty
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Mastery of the technical challenges specific to bungalows and multi-story houses
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Experience with all types of housing in Montreal and surrounding areas
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Personalized support for grants
We understand that every home is unique. Whether you live in a bungalow in Laval or a large, multi-story home on the South Shore, we tailor our approach to provide you with an HVAC system perfectly calibrated to your comfort, energy needs, and budget .
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Excerpt (275 characters max):
A central heat pump for a bungalow doesn't have to be the same as one for a multi-story house. At AirGreen, we adapt each installation to the structure, to ensure optimal comfort in Montreal, Laval, Longueuil, the North Shore, and the South Shore.
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Central heat pump for bungalows or multi-story homes: AirGreen adapts each HVAC system to the type of home. Comfort, savings, and subsidies are available in Montreal, Laval, Longueuil, the North Shore, and the South Shore.



