Installation of a Zephyr 25 R454B wall-mounted heat pump in Rosemont, Montreal
Discover the Zephyr 25 R454B wall-mounted heat pump installed by AirGreen in Rosemont, Montreal. Combining high energy efficiency, reliable heating down to -30°C, effective cooling up to +5°C, and a 10-year warranty, it is the ideal solution for your comfort.
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.
Comfort and Efficiency Without Compromise Thanks to the Zephyr 25 R454B Heat Pump
At AirGreen, we are committed to providing superior HVAC solutions that enhance the comfort of homes and businesses in Montreal and its surroundings. In this article, we present in detail a recent installation of the Zephyr 25 R454B wall-mounted heat pump carried out in the welcoming neighborhood of Rosemont, located in the heart of Montreal.
The Zephyr 25 R454B is known for its high energy efficiency and its ability to operate effectively even in cold weather. For this installation, our goal was to ensure optimal performance year-round, whether during hot summers or the harsh winters typical of the Montreal area.
Features of the Zephyr 25 R454B Heat Pump
The Zephyr 25 R454B wall-mounted heat pump stands out for its exceptional performance and remarkable energy efficiency. Here are some of its main features, ideal for residents of Rosemont and other areas of Montreal:
High Energy Efficiency
With ratings of 25 SEER2 and 11 HSPF2, the Zephyr 25 R454B is a high-efficiency model, significantly reducing consumption compared to standard units. This performance is especially appreciated in Montreal, where HVAC systems must operate year-round to ensure consistent comfort.
Energy Star Certified: Thanks to its superior performance, this heat pump qualifies for several grants and incentives offered to homeowners in Montreal, Laval, Longueuil, and surrounding regions.
Efficient Heating and Cooling Capacity
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Heating: The Zephyr 25 R454B provides effective heating even at very low outdoor temperatures, down to -30°C, making it a perfect choice for Quebec winters.
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Cooling: Similarly, it maintains optimal cooling even during extreme heat, down to +5°C outside.
Quiet Operation
With an indoor noise level as low as 32 dB, this unit guarantees a peaceful home environment — an essential factor in quiet residential neighborhoods like Rosemont.
It is also equipped with the 4D automatic oscillating air diffusion system, which distributes warm or cool air evenly, thus avoiding uneven temperature zones.
Advanced Technologies for Optimal Comfort
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iFeel Mode: This smart mode adjusts the temperature based on the remote control’s location, ensuring personalized and consistent comfort throughout the room.
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Smart Technology: Thanks to its adaptive voltage control, the unit remains stable even during fluctuations between 150 and 264 volts, common in older Montreal homes.
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Quick Start Function: The Zephyr 25 R454B reaches the desired temperature faster than traditional systems, offering immediate comfort.
Durability and Long-Term Peace of Mind
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10-Year Parts Warranty: This solid warranty provides homeowners with reliable long-term protection.
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Fireproof Electrical Box: An important safety addition, reducing risks associated with electrical components.
Installation Steps in Rosemont
Our team of experts at AirGreen carefully followed a rigorous process to ensure a flawless installation. Here is an overview of the steps we followed for this project in Rosemont:
Site Evaluation and Preparation
Before installation, a comprehensive site evaluation was conducted to determine the optimal location for the Zephyr 25 R454B. We considered the layout of the home, window exposure, and the ideal spot for the outdoor unit.
Unit Assembly
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Indoor Unit: Carefully installed on a strategic wall, it allows optimal air circulation without obstruction by furniture.
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Outdoor Unit: Placed in an accessible area, ensuring good air circulation and reducing noise disturbances.
Electrical and Refrigerant Connections
Our technicians connected the wiring and refrigerant lines with precision, ensuring that the electrical supply was fully compatible with the requirements of the Zephyr 25 R454B.
Final Checks and Start-Up
Once the installation was complete, we conducted a series of rigorous tests to validate the unit’s performance: heating and cooling operation, airflow configuration, and overall performance verification.
Concrete Benefits for Rosemont Residents
Rosemont homeowners will enjoy many lasting benefits with their new Zephyr 25 R454B installation:
Optimal Comfort Year-Round
Whether during scorching summer days or freezing winter nights, this heat pump maintains a pleasant indoor temperature. Its consistency is especially advantageous for families seeking a stable and comfortable atmosphere.
Significant Energy Savings
Thanks to its efficiency, the Zephyr 25 R454B reduces electricity consumption, lowering your monthly bills. Over the long term, the savings more than compensate for the initial investment.
Reduced Environmental Impact
The Zephyr 25 uses the R454B refrigerant, a gas more environmentally friendly than traditional refrigerants. It is an excellent option for homeowners concerned about their ecological footprint.
Customer Testimonial from Rosemont
“We are very satisfied with our new Zephyr heat pump installed by AirGreen. The installation was quick and professional. Since then, we have noticed a clear improvement in our comfort and a reduction in our energy consumption. It’s reassuring to be ready for summer heat as well as the harsh cold of Montreal winters!”
Conclusion
If you are looking for a high-performance and reliable wall-mounted heat pump for your home in Rosemont, Montreal, or nearby areas, the Zephyr 25 R454B is an ideal solution. It combines advanced technology, energy efficiency, and premium comfort, while adapting to local climate conditions. Trust AirGreen to provide you with customized, durable, and economical HVAC solutions.
How it goes, from the first call to the end
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.
And 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.
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.
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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?
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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).