Installation of a FORESTAIR E24 wall-mounted heat pump in Coteau-du-Lac
AirGreen installs a FORESTAIR E24 wall-mounted heat pump in Coteau-du-Lac with a professional HVAC approach: optimized positioning, energy efficiency, and year-round 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.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
A compact, high-performance heat pump installation adapted to the constraints of a building in Coteau-du-Lac
At AirGreen, we regularly install wall-mounted heat pumps in environments where available space, the location of the outdoor unit, and architectural constraints require careful planning. This installation in Coteau-du-Lac perfectly illustrates our approach: providing an efficient heating and cooling solution while respecting the building’s specific characteristics.
For this project, our team installed a FORESTAIR E24 wall-mounted heat pump, a model designed to meet the needs of homeowners looking for a reliable, economical unit suited to Quebec’s climate conditions.
The outdoor unit was positioned on a technical surface with an elevated support that provides adequate clearance around the unit. As can be seen in the installation, the heat pump rests on a metal structure that facilitates air circulation, limits ice buildup, and improves access during HVAC maintenance.
This configuration is particularly well suited to areas such as Coteau-du-Lac, Montreal, Laval, Longueuil, the North Shore, and the South Shore, where many homes have exterior layout constraints, balconies, technical roofs, or limited space.
FORESTAIR E24: a wall-mounted heat pump designed for Quebec’s climate
The FORESTAIR E24 belongs to a new generation of wall-mounted heat pumps designed to provide a balance between energy efficiency, residential comfort, and reasonable installation costs.
This model uses R-454B refrigerant, a newer technology that is gradually replacing certain traditional refrigerants due to its reduced environmental impact. The FORESTAIR E24 is therefore an interesting option for homeowners who want to modernize their heating and cooling system.
Main technical specifications of the FORESTAIR E24
- Type of unit: wall-mounted mini-split heat pump
- Brand: FORESTAIR
- Model: E24
- Nominal capacity: approximately 12,000 BTU/h
- Refrigerant: R-454B
- Cooling performance: up to approximately 24 SEER, depending on the certified configuration
- Winter operation: designed to maintain effective heating capacity during cold periods
- Application: residential heating and cooling
Thanks to its design adapted to Quebec’s varying temperatures, this heat pump reduces the use of other heating sources for much of the year.
For many homeowners, a high-efficiency ductless heat pump is a practical way to improve indoor comfort while reducing energy costs associated with electric heating.
A Precisely Executed HVAC Installation Despite Location Constraints
Strategic Positioning of the Outdoor Unit
When installing a heat pump, the location of the outdoor unit plays an essential role in the system’s long-term performance.
In this project in Coteau-du-Lac, our team had to take several factors into account:
- ensure sufficient clearance in front of the outdoor coil;
- avoid areas prone to accumulating snow or ice;
- limit vibration transmission;
- maintain easy access for future maintenance;
- protect the unit from outdoor conditions.
The FORESTAIR E24 outdoor unit was therefore installed on an elevated structure. This method leaves open space beneath the unit to facilitate drainage of water from defrost cycles.
During Quebec winters, a heat pump naturally produces water when it runs a defrost cycle. Improper installation can cause ice to accumulate beneath the unit, which may interfere with operation and shorten the lifespan of the components.
At AirGreen, we pay particular attention to these details, which are not always visible after installation but directly influence the system’s reliability.
Vibration and noise management: an essential consideration in residential settings
A modern heat pump is designed to operate quietly, but improper installation can transmit vibrations to the building structure.
In this installation, choosing a suitable support makes it possible to:
- further isolate the unit from the structure;
- reduce mechanical vibrations;
- improve occupants’ acoustic comfort;
- to facilitate technical work.
This attention is particularly important for installations on balconies, terraces, exterior walls, or structures close to living spaces.
A professional wall-mounted heat pump installation involves more than simply mounting a unit on the wall and connecting lines. Positioning, supports, condensate drainage, and airflow are integral to a durable installation.
The steps carried out by AirGreen during this installation in Coteau-du-Lac
Site assessment and installation preparation
Before each project, our team analyzes the building’s characteristics to determine the best possible configuration.
We assess in particular:
- the ideal location of the indoor unit;
- the route of the refrigerant lines;
- the distance between the indoor and outdoor units;
- condensate drainage options;
- the available electrical supply;
- architectural constraints.
This step helps avoid unnecessary modifications and ensures a clean installation.
Installation of the FORESTAIR outdoor unit
The outdoor installation includes several technical operations:
- Installing the appropriate support.
- Precise positioning of the outdoor unit.
- Leveling the unit.
- Installation of the refrigerant lines.
- Electrical connection according to applicable standards.
- Checking the circuit for leaks.
- Commissioning and performance testing.
Each connection must be made precisely to ensure the energy performance advertised by the manufacturer.
Commissioning and final checks
Once the installation is complete, our technicians perform the necessary checks:
- system pressure check;
- verification of operation in heating mode;
- verification of operation in cooling mode;
- supply air temperature check;
- general inspection of the installation.
This final step confirms that the FORESTAIR E24 heat pump is operating properly from the first use.
Why choose a FORESTAIR wall-mounted heat pump for a home in Quebec?
A solution tailored to homeowners’ needs
Homeowners replacing an old air conditioner or looking for an additional heating solution often choose a wall-mounted heat pump for several reasons:
- effective heating during the colder seasons;
- comfortable air conditioning during the summer;
- reduced electricity consumption;
- less invasive installation than a central system;
- precise temperature control.
In many homes in Coteau-du-Lac and the surrounding areas, a wall-mounted heat pump is a practical solution when ventilation ducts are not present.
An interesting alternative to traditional air conditioners
A conventional wall-mounted air conditioner only provides cooling. A wall-mounted heat pump, on the other hand, can also provide heating.
This difference is important in Quebec because the unit can operate during the transition periods:
- spring;
- fall;
- milder winter days.
This often helps reduce demand on the home’s primary heating system.
Common mistakes to avoid when installing a wall-mounted heat pump
A successful installation depends as much on choosing the right unit as it does on the quality of the installation.
Here are some common mistakes we observe in the HVAC field:
Choosing an unsuitable capacity
A heat pump that is too small may run constantly without achieving the desired comfort level. An oversized unit may cause short cycling and reduce efficiency.
Sizing must take into account:
- floor area;
- insulation;
- sun exposure;
- the interior layout;
- the occupants’ habits.
Neglecting the outdoor unit’s location
Installing an outdoor unit in an overly enclosed space or without sufficient clearance can reduce its performance.
A proper installation must allow air to circulate freely.
Forgetting the annual maintenance
Even a high-performance heat pump requires regular maintenance.
Professional HVAC maintenance helps:
- clean the heat exchangers;
- check the drains;
- monitor performance;
- extend the system’s lifespan.
At AirGreen, we recommend periodic maintenance to maintain your equipment’s efficiency.
AirGreen: your heat pump installation specialist in Montreal and throughout the surrounding area
This installation of a FORESTAIR E24 wall-mounted heat pump in Coteau-du-Lac demonstrates the importance of a professional approach from start to finish.
Every building has its own characteristics. Our role is to propose a suitable HVAC solution, carry out a clean installation, and ensure that the equipment operates according to the owner’s expectations.
Whether you are located in Coteau-du-Lac, Montreal, Laval, Longueuil, the North Shore, or the South Shore, our team can assist you with choosing, installing, and maintaining your wall-mounted heat pump.
A properly completed installation today means a more reliable, quieter, and more cost-effective system for years to come.
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 room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
Model, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
Floors and furniture protected, wall plate position marked level, wall opening located.
A single opening, with the slope the drain needs to flow outside.
Set on a stand raised above the snow, with the clearances the manufacturer requires.
Connected, insulated and protected. The opening is then sealed against water, cold air and insects.
A dedicated circuit and an accessible disconnect near the outdoor unit.
Leak test, vacuum, then start-up and a check of heating and cooling.
Remote, modes, filters: we show you the essentials before we leave.
- The on-site estimateWe look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
- The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
- Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
- The wall openingA single opening, with the slope the drain needs to flow outside.
- The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
- Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
- The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
- Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
- The walkthroughRemote, modes, filters: we show you the essentials before we leave.
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.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
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. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
What people ask us about this kind of work
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
How cold can it heat?
How much can I save?
How is the LogisVert assistance calculated?
Is it noisy?
The outdoor unit is covered in ice: is that normal?
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).