Installation of the Zephyr 25 R454B Wall-Mounted Heat Pump in Montréal-Est
Installation of the Zephyr 25 R454B heat pump in Montréal-Est by AirGreen, offering efficient heating down to -30°C and exceptional cooling down to -15°C. Enjoy a 10-year warranty and energy savings. Contact us for more info.
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.
Installation of the Zephyr 25 R454B Heat Pump: An Optimal Choice for Comfort Year-Round
At AirGreen, we understand that home comfort is about efficiently regulating the temperature throughout the year. That's why we offer CVAC (heating, ventilation, and air conditioning) solutions tailored to our clients' specific needs. Today, we're presenting a recent installation completed in Montréal-Est: a Zephyr 25 R454B wall-mounted heat pump. This high-performance model ensures both effective heating in winter and pleasant cooling in summer.
Installation Details: Zephyr 25 R454B
The Zephyr 25 R454B is a cutting-edge wall-mounted heat pump that offers a cooling capacity of 24,000 BTU and a heating capacity of 24,000 BTU. This model stands out with its SEER2 rating of 25, guaranteeing exceptional energy efficiency and high performance even in extreme weather conditions.
Key Features of the Zephyr 25 R454B:
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Inverter technology for precise temperature control.
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R454B refrigerant, an environmentally-friendly choice.
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10-year parts warranty, offering long-term peace of mind.
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Low-temperature heating mode: Operates down to -30°C, ideal for the harsh winters of Montréal.
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Cooling mode down to -15°C, providing an innovative solution for unique installations like data center cooling.
A Detailed Installation Process for Perfect Results
The installation of this Zephyr 25 R454B heat pump in Montréal-Est wasn't without its challenges. The client, a homeowner seeking a reliable heating and cooling solution for their home, needed an appliance that could withstand extreme temperatures while providing optimal comfort.
During installation, our technicians had to consider several factors, such as the placement of the outdoor unit. The unit was mounted on the building’s exterior, elevated to maximize air efficiency and ensure better thermal circulation. This placement avoided snow and ice buildup during the winter, which can affect the performance of heat pumps. The installation was carried out with constant attention to safety and adherence to all standards.
We also made sure to optimally install the piping, insulating the tubes and ensuring efficient drainage with the reversible drainage system of the Zephyr. The compressor preheating technology was another valuable feature to ensure fast startup even in extremely cold temperatures.
Why Choose the Zephyr 25 R454B?
Energy Performance and Comfort
With its SEER2 rating of 25, the Zephyr 25 R454B stands out for its ability to efficiently regulate the temperature while keeping energy costs low. This model allows for significant savings on energy bills while ensuring a stable and pleasant indoor temperature. Furthermore, with its ability to operate at temperatures as low as -30°C for heating, it's perfect for the harsh winters in Montréal, Laval, and other areas in the North and South Shores.
Reliability and Durability
The 10-year parts warranty and voltage self-adaptation technology contribute to the equipment’s longevity. This heat pump is designed to withstand voltage fluctuations from 150 to 264 volts, ensuring stability and durability even in unstable electrical environments.
Innovative Technology
The 4D auto-swing mode and the horizontal and vertical diffusion vanes allow for even air distribution throughout the room, preventing cold spots and maintaining an even temperature.
Customer Testimonial
The client, a resident of Montréal-Est, expressed satisfaction with the installation of the Zephyr 25 R454B. Here’s what they had to say after several months of use:
"The installation of the Zephyr heat pump has been an exceptional experience. Not only does it regulate the temperature perfectly in our home, but it is also extremely quiet. Additionally, the AirGreen team did an excellent job with a clean and professional installation. We now have a reliable heating and cooling system that works even in very cold weather."
Conclusion: Why Choose AirGreen for Your CVAC Installations?
At AirGreen, we are committed to providing our clients with CVAC solutions tailored to their specific needs, whether it’s a wall-mounted heat pump installation or an effective heating system for the winter. Our expertise and commitment to customer satisfaction are reflected in every project we undertake.
If you're looking for a reliable heating and cooling solution for your home or business, the Zephyr 25 R454B is an excellent choice. Contact us for a free evaluation and advice on the best system for your property.
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.
More jobs to see, near you
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Each dot: a town where AirGreen has published projects. The glowing dot: this job.
Every house has its constraints. We see them before we install.
The on-site estimate is free and the quote follows within 24 hours.
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).