Installation of a Zephyr wall-mounted heat pump in Villeray–Saint-Michel–Parc-Extension

An interior head perfectly integrated above a door, for precise and discreet comfort

At AirGreen , we have just completed the installation of a Zephyr wall-mounted heat pump in a plex in the Villeray–Saint-Michel–Parc-Extension sector. The interior head, installed above a door opening onto the courtyard , illustrates a clean and thoughtful approach to HVAC installation in Montreal housing: aesthetic integration, respect for clearances , noise control and four-season performance.

Project context and comfort objectives

The apartment benefits from a through living plan, typical of brick plexes. The occupants wanted:

• reliable supplementary heating in winter and efficient cooling in summer;

• a quiet and discreet device, without encroaching on the useful space above the door;

• an energy-efficient solution to reduce your electricity bill, while maintaining precise room-by-room control.

After load calculations (surfaces, orientation, glazing, infiltration, ceiling height), we selected a capacity of 9,000 to 12,000 BTU to cover the living room and the adjoining dining area, with priority given to stable comfort and fine modulation .

Why the Zephyr range meets the requirements of Greater Montreal

The Zephyr brand is appreciated for its compact heads, its homogeneous blowing and its modulating electronic management . On this project, the solution caught our attention for three reasons:

1. Seasonal efficiency : a variable speed compressor that adjusts power to actual needs, reducing on/off cycles.

2. Low noise level : a shutter and a ventilation motor designed to limit turbulence at low speeds — a crucial point in a living room.

3. Easy maintenance : washable pre-filters accessible from the front, an essential reminder to maintain high efficiency and preserve air quality.

Interior installation: just above a door, without compromising airflow

Placing the unit in a transom , immediately above a door, requires clearances to be respected so that the blown air does not hit the lintel or the ceiling. We have:

• positioned the fixing sole on uprights to maximize anchoring;

• left a recess in the ceiling to avoid the “air cushion” effect and allow free suction;

• set the louver for a long horizontal sweep in air conditioning mode and a slightly lowered angle in heating mode, to avoid stratification near the ceiling.

The result: a steady stream of air that travels the length of the room, without unpleasant drafts near the door.

Drilling, wall crossing and sealing: the AirGreen signature

The refrigeration assembly (insulated copper pipes, communication cable, drain) passes through the exterior wall via a single gravity-sloped hole for condensate. Our standard practices for residential HVAC installation :

• minimum slope of the drain towards the outside to avoid any stagnation of water;

• sleeve and closed-cell foam to reconstitute the vapor barrier ;

• careful sealing on the periphery, both on the inside (clean finish) and on the outside (protection against air and humidity);

• respecting the minimum curvature of the refrigeration connections to preserve the compressor.

Externally, the lines are protected by discreet, UV-resistant capping . The routing reduces the refrigeration length to limit pressure losses and facilitate HVAC maintenance operations.

Power supply and compliance

We have verified the availability of the dedicated circuit and protection on the panel, in accordance with local electrical requirements. The communication wiring between the indoor head and the condenser is separated from the power lines to limit interference. Each connection is crimped and sealed following our quality control procedures.

Commissioning: precision and reliability

The installation was vacuumed to a deep level, with leak testing and stabilization to validate the absence of leaks. We then:

• adjusted ventilation settings ;

• calibrated the set temperature for the main zone;

• checked defrosting in heating mode and condensate management in air conditioning mode;

• took temperature measurements in the intake and supply air to confirm the expected ΔT difference .

Result: consistent comfort, maximum discretion

From the first cycles, the occupants noted:

• a homogeneous thermal environment and very low background noise ;

• rapid response to variations in sunlight thanks to modulation;

• a successful visual integration : the device, centered above the door, frees up the walls and does not clutter up the space.

Tips for use and maintenance to maintain performance

To maintain air quality and energy performance :

• clean filters every 4 to 8 weeks depending on usage;

• keep the outdoor condenser clear (snow, leaves, objects);

• have annual HVAC maintenance carried out: checking exchangers, checking tightening, electrical and refrigeration measurements;

• favor moderate settings (heating 21°C, air conditioning 23–24°C) and leave the ventilation on auto for optimal modulation.

Subsidies and profitability

Depending on the exact configuration of the chosen machine and its efficiency ratings (SEER2, HSPF/HSFP2, certification), the project may be eligible for certain grant programs in Quebec for high-efficiency heat pumps . We support our clients in Montreal, Laval, Longueuil, North Shore and South Shore in verifying eligibility , collecting supporting documents and optimizing the file.

What makes the AirGreen difference

• Accurate load diagnosis for correct sizing (avoid under- or over-sizing).

• Finishes : aligned capping, clean seals, stainless steel screws where required.

• Respect for air circulation and clearances around the head.

• Clear documentation provided to the customer: instructions, maintenance, guarantees.

• Local after-sales service , with rapid availability for Villeray, the Plateau, Rosemont, the Southwest , Laval and the South Shore .

What to Avoid When Installing Interior Above a Door

• Sticking the head too close to the ceiling (stifled suction, reduced efficiency).

• Forget the slope of the drain (risk of dripping and odors).

• Outdoor travel too long or without UV protection.

• Unsealed holes (air and moisture infiltration).

Our teams anticipate these pitfalls and deliver a reliable , durable and aesthetic installation.

Conclusion

This Zephyr wall-mounted heat pump installed above a door in a plex in Villeray–Saint-Michel–Parc-Extension illustrates our approach to each project: careful reading of the space, compliance with HVAC regulations, choice of suitable capacity and meticulous finishing. The client benefits from four-season comfort with controlled consumption, supported by an AirGreen service recognized throughout Greater Montreal .