Installation of a Zephyr wall-mounted heat pump in Villeray–Saint-Michel–Parc-Extension
Zephyr wall-mounted heat pump installed in Villeray: discreet interior head, gravity drain, neat exterior capping. AirGreen, HVAC experts in Montreal, Laval, Longueuil, North Shore and South Shore . Comfort, silence and efficiency.
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.
Careful integration for a Montreal condo: comfort, silence and aesthetics every day
At AirGreen , we have just installed a Zephyr wall-mounted heat pump in a condo in the Villeray–Saint-Michel–Parc-Extension sector. The client's objective was clear: to obtain responsive air conditioning in the summer, reliable heating support in the winter and the most discreet visual presence possible . We designed a custom HVAC solution that meets these expectations, while respecting the constraints specific to a Montreal condominium.
Context: needs of an urban apartment and constraints of co-ownership
The accommodation features an open living area, an adjoining bedroom, and a central hallway. Priorities:
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Temperature stability in the day area, without drafts.
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Low noise level for working from home.
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Compliance with co-ownership rules : limited drilling, careful aesthetics, silent condenser outside.
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Controlled consumption : seeking a good comfort/energy ratio.
The Zephyr wall-mounted heat pump stands out for its compact size, fine modulation and simple HVAC maintenance (washable filters, facade access).
Sizing and choosing the location of the inner head
After measuring the glass surfaces, the orientation and the internal contributions, we dimension the capacity around 9,000 to 12,000 BTU for this living area. The interior head is installed high up , in the center of a clear wall. This placement offers three advantages:
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Even diffusion : the air jet sweeps across the open area, reaching the kitchen and dining area without blowing directly onto the occupants.
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Perceived silence : at height, the sound sensation decreases and the machine can operate at low speeds most of the time.
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Easy maintenance : front access for cleaning filters and checking fins.
The wall bushing is positioned behind the casing to remain invisible on the inside. The drain slope is precisely adjusted to favor gravity flow towards the outside. This choice avoids the need for a lifting pump, reduces the risk of additional noise and simplifies maintenance .
Refrigeration and finishing: clean, short and durable
We are using a short refrigeration path : continuous insulated copper, shielded communication cables and compliant rigid drain . On the outside, the connections are protected by capping that matches the facade (neutral color), with bending radii respected to preserve the integrity of the pipes and limit pressure losses . Key points:
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Sealing the hole : closed-cell foam + polyurethane sealant, reconstituted vapor barrier.
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Stainless steel fixings and UV fasteners for durability.
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Proximity power cut-off at the condenser for safe maintenance.
This level of finish is essential in dense neighborhoods like Montreal intra-muros , where exterior aesthetics and discretion are scrutinized by condominiums and neighbors.
Condenser installation: silence and compliance
In the common outdoor area (balcony/terrace or slab), the Zephyr condenser is placed on anti-vibration pads and wedged to ensure winter flow. Side and rear clearances are respected to optimize heat exchange. We ensure:
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Move away from resonance points (guardrails, light walls).
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Limit vibration transmission to the structure using suitable pads .
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Direct the blowing away from neighboring windows when possible.
The result: a low exterior noise level , a crucial criterion in co-ownership.
Commissioning settings: precision and real comfort
Commissioning includes:
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Vacuum draw with leak test.
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Checking the power supply currents and voltage.
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Setting the shutters to avoid direct flow on sensitive areas (desk, sofa).
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Calibration of modes (cooling, auxiliary heating, dehumidification) according to customer usage.
We provide the owner with a user guide : optimal temperature ranges, cross-ventilation advice and recommendations for responsible consumption .
Result for the customer: comfort, economy and aesthetics
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Immediate comfort : rapid temperature rise/cooling, without the sensation of drafts.
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Lower bills : compressor-fan modulation reduces on/off cycles and optimizes energy .
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Silence : the Zephyr head remains discreet even under sustained demand.
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Clean wall : hidden passage, no visible chute inside, respecting the minimalist style of the condo.
Challenges encountered… and AirGreen solutions
1) Minimalist interior aesthetics
The bare white wall had to remain understated. We aligned the head as close to the ceiling as possible to minimize visual impact, centered the machine for pleasing symmetry, and masked the cutout behind the unit to avoid any visible ceiling rose.
2) Condensate management without pump
The client wanted to avoid any additional noise source. By coordinating the height of the head and the external outlet , we obtained a reliable gravity slope , tested at the end of installation (flow tests).
3) Co-ownership and neighborhood
We provided the union with the layout diagram , the condenser sound sheet and our vibration attenuation procedures . Result: project authorized quickly and work completed in one day .
Good practices for daily use
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Auto or Low mode in the evening for optimal acoustic comfort.
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Wide sweeping shutters in summer to distribute the cold; slightly downward tilt in winter to promote the circulation of warm air.
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Windows closed during air conditioning; infiltration management to avoid putting unnecessary strain on the unit.
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Free clearance around condenser (outside): no obstructions within 30–50 cm depending on the face.
AirGreen Recommended HVAC Maintenance
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Filters : rinse every 4 to 8 weeks during periods of intensive use.
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Annual inspection : check electrical tightening, capping , line insulation, drain and performance.
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Periodic deep cleaning of the evaporator and condenser to maintain seasonal efficiency and prevent odors.
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Archived maintenance report : useful for warranty and real estate resales.
We offer maintenance plans for condominiums in Montreal, Laval, Longueuil, North Shore and South Shore , to ensure consistent performance and equipment longevity.
Grants: How to maximize financial aid
Wall-mounted heat pumps with good seasonal performance and suitable cold resistance may be eligible for certain programs. Our team supports the client in:
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verification of the criteria of the selected Zephyr model,
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collection of documents (proof of installation, detailed invoices),
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submission of the file within the deadlines.
This assistance simplifies the process and reduces the net cost of the project.
What you get with AirGreen
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Condo expertise in Villeray, Rosemont, Le Plateau, Le Sud-Ouest and Ville-Marie: logistics, schedules, elevator access, protection of common areas.
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Clean finishes : invisible interior crossings, aligned exterior capping , stainless steel screws and durable seals.
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Complete support : choice of BTU capacity , installation, commissioning , maintenance , monitoring and support.
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Attention to detail : vibration measurements, shutter adjustments, personalized usage recommendations.
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?
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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).