Installation of a Fujitsu Airstage central heat pump in Sainte-Rose (Laval)
Installation of a Fujitsu Airstage central heat pump in Sainte-Rose (Laval) by AirGreen: performance, reliability and energy efficiency for optimal four-season comfort.
Take a tour of the installation
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
It captures or rejects heat outside. It sits on a level base, above the snow, with free space all around.
The insulated refrigerant lines enter the house through a sealed opening and run to the indoor coil.
A shut-off switch near the outdoor unit isolates it safely for service.
Sitting on the indoor module, it moves heat between the house air and the refrigerant.
Electric furnace or air handler: its fan pushes air through the ducts. The electric backup takes over in extreme cold.
Supply ducts bring air to the rooms; returns bring it back to the unit. Their condition matters as much as the unit's.
It protects the coil and the fan. A dirty filter cuts airflow, so it gets checked regularly.
It runs the heat pump and the backup heat. It must be compatible with the installed system.
An under-structure installation: a challenge met with precision
At AirGreen , we recently completed a Fujitsu Airstage central heat pump installation in a property in the Sainte-Rose district of Laval . This project stood out due to the complexity of its environment: the outdoor unit had to be installed under a floor structure, in a confined space, while respecting the performance, safety and durability requirements specific to our AirGreen standards.
An atypical installation environment
The client's chosen location provided a protected space, but required careful planning. The Fujitsu Airstage unit, designed for residential and semi-commercial applications, was fixed to a raised concrete slab , ensuring a solid and perfectly level base despite the gravel floor.
Our technicians adjusted the height to ensure optimal ventilation of the condenser, even in a partially confined space, while respecting the necessary clearances for air circulation and maintenance.
Technical details of the installation
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Make and Model: Fujitsu Airstage (R-32 Compatible High Efficiency System)
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Type: Central ducted heat pump
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Outdoor location: Under structure, semi-open space, protected from the elements
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Base: Insulated and vibrated concrete slab, on a bed of compacted gravel
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Power supply: Direct connection to dedicated circuit breaker with accessible cut-off box
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Refrigerant connections: Piping protected under white insulating sheath, securely fixed and secured
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Drainage: Gravity routing, without condensate pump
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Insulation: Ducts carefully sheathed to prevent condensation and energy loss
Each step was carried out in compliance with HVAC standards and RBQ regulations , thus ensuring a compliant, durable system that is perfectly integrated into the configuration of the house.
Why the Fujitsu Airstage system?
Fujitsu's Airstage range is renowned for its exceptional reliability , high energy efficiency , and stable operation down to -26°C . It is an ideal solution for Quebec climates, where temperature variations require robust and efficient systems.
In addition, recent Airstage models are compatible with Quebec energy efficiency grant programs, such as Rénoclimat or Hydro-Québec , offering homeowners substantial long-term savings .
Challenges encountered and AirGreen solutions
1. Limited space
The main constraint of this project was the limited height under the structure. Our technicians had to adapt the supports and adjust the positioning to maintain a safe distance between the top of the condenser and the frame. Particular attention was paid to air circulation to avoid any hot recirculation that would be detrimental to performance.
2. Cabling and conduit management
All electrical and refrigerant conduits have been carefully arranged and secured, ensuring a clean, protected, and aesthetically pleasing route. The use of heat-resistant black tubing and cable ties ensures maximum durability, even in humid environments.
3. Protection from the elements
Although the condenser is sheltered from direct rainfall, we added a slight drainage slope under the slab to prevent water accumulation and provide natural ventilation from below the structure.
Long-lasting, quiet performance
The Fujitsu Airstage is distinguished by a reduced noise level , a variable speed inverter compressor , and automatic optimization of the refrigeration load , allowing constant comfort with minimal consumption .
Combined with an AirGreen installation that meets the highest standards, this system guarantees exceptional seasonal efficiency (up to 21 SEER) and an HSPF efficiency greater than 10 , values that translate directly into concrete energy savings for the customer.
AirGreen know-how at every stage
Our team of HVAC installation experts in Laval doesn't just install a heat pump—we provide complete integration :
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Site analysis and technical planning
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Optimization of conduit and cabling routes
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System calibration after commissioning
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Performance testing and final quality control
We also support our customers after installation, with preventive maintenance service and AirGreen maintenance plans , essential to extend the life of the system and preserve original performance.
Subsidies and energy efficiency
Fujitsu Airstage heat pumps are eligible for grant programs offered by Hydro-Québec and Transition Énergétique Québec . These financial aid programs encourage homeowners to replace their old heating systems with more environmentally friendly and economical technologies.
Thanks to its R-32 refrigerant , which is more environmentally friendly and has a low global warming potential (GWP) , this heat pump actively contributes to reducing the residential carbon footprint .
A successful project, a satisfied client
The end result: a discreet, robust and high-performance installation, perfectly adapted to the building configuration.
The owner now benefits from four-season comfort , remarkable energy efficiency , and the peace of mind provided by an AirGreen installation.
At AirGreen , we combine technical expertise, rigorous execution and personalized service to offer the best heating and air conditioning solutions throughout Montreal, Laval, Longueuil, the North Shore and the South Shore .
Each project is a demonstration of our commitment to quality, performance and lasting customer satisfaction.
AirGreen — Efficiency, reliability and comfort at your fingertips.
The big day, step by step
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
We look at the ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.
The equipment combination, capacity and price, in writing. We check whether the combination qualifies for assistance programs.
Access protected, old unit disconnected and removed when it is being replaced.
Electric furnace or air handler, with its coil, connected to the supply and return ducts.
On a level base, raised above the snow, with free space all around.
Insulated, they enter through a sealed opening and run to the indoor coil.
Dedicated circuits, accessible disconnect, a thermostat that works with the heat pump and the backup heat.
Leak test, vacuum, start-up, airflow check and a test of both modes.
Filter, thermostat, backup heat in extreme cold: what to know before winter.
- The on-site estimateWe look at the ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.
- The quoteThe equipment combination, capacity and price, in writing. We check whether the combination qualifies for assistance programs.
- Getting readyAccess protected, old unit disconnected and removed when it is being replaced.
- The indoor moduleElectric furnace or air handler, with its coil, connected to the supply and return ducts.
- The outdoor unitOn a level base, raised above the snow, with free space all around.
- The refrigerant linesInsulated, they enter through a sealed opening and run to the indoor coil.
- Electrical and thermostatDedicated circuits, accessible disconnect, a thermostat that works with the heat pump and the backup heat.
- Tests and start-upLeak test, vacuum, start-up, airflow check and a test of both modes.
- The walkthroughFilter, thermostat, backup heat in extreme cold: what to know before winter.
What would it look like at your place?
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
Conversion: 1 W = 3.412 BTU/h. An indication, not a load calculation: baseboards and furnaces are often stronger than the real need, and they can stay as backup. AirGreen confirms the capacity on site.
Four mistakes we do not make
Flip each card to see what we do instead.
Your own project, step by step
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Check the indoor module's filter.
- Clear winter debris from the outdoor unit.
- Test cooling before the heat arrives.
- Check the filter more often in peak season.
- Keep registers and returns clear.
- Watch condensate drainage near the coil.
- Change or clean the filter.
- Test heating and backup heat before the cold.
- Book periodic maintenance.
- Clear snow around the outdoor unit.
- Store nothing in front of the indoor module.
- Note any unusual noise or smell and call us.
Is your home ready?
Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.
Four statements: true or false?
It all comes down to details you have just seen.
1. A central heat pump uses the house's ducts.
It connects to the existing ducts to heat and cool everywhere.
2. In extreme cold, electric backup heat can take over.
The indoor module (furnace or air handler) works with the heat pump and takes over in extreme cold.
3. The filter only gets changed when the unit breaks down.
A dirty filter cuts airflow. It gets checked regularly.
4. You can reuse the old unit's size without checking.
The house may have changed: insulation, windows, added rooms. Capacity is confirmed on site.
0 / 4 right answers
What people ask us about this kind of work
Can I keep my current ducts?
What happens in extreme cold?
Furnace, air handler, ducted: what is the difference?
Are there grants?
Do I need a permit?
How much can I save?
How is the LogisVert assistance calculated?
Will my current thermostat work?
Central or wall units: which one?
Does AirGreen hold the required licences?
Is the estimate free?
No question matches. Write to us: we answer.
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).