Targeted comfort for a room with a high ceiling and industrial door
At AirGreen , we often work in hybrid spaces—workshops, neighborhood cafes, creative studios—where the main requirement is to achieve precise, quiet, and reliable heating and cooling despite architectural constraints. This HVAC installation in Le Sud-Ouest (Montreal) is a good example: a Goodman wall-mounted heat pump installed high above an industrial opening to stabilize the comfort of a high-traffic space.
Why a wall-mounted heat pump in a workshop-type space?
In this room, the free height, the presence of a mechanical rail, a drive chain and metal ducts require a compact device, quickly modulating its power and capable of directing the air precisely. The wall-mounted heat pump meets this need exactly:
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Inverter modulation to follow demand in real time;
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adjustable air diffusion with horizontal and vertical flaps;
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installation possible near the ceiling without encroaching on the usable surface;
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low electricity consumption all year round, with an excellent comfort/savings ratio.
Goodman was chosen for its robustness and its parts readily available in Quebec, a real plus for the continuity of operation of a local business.
Context, constraints and implementation strategy
The indoor unit is mounted above a large opening (sectional door) near mechanical components: chain, rail, exposed electrical wiring, and metal conduits. Our priorities during the technical inspection:
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Safety and clearances
We validate the required clearances on the facade and sides to avoid any interference with the shutters, and we take into account the trajectory of the chain and the movement of the door. The anchors are positioned in a reinforced structure , with silent blocks to limit vibration transmission to the walls. -
Condensate hydraulics
At this height, gravity drainage is rarely possible. We integrate a mini-condensate pump with double float detection, sheathed and soundproofed, with a service line accessible for maintenance. The discharge follows a protected route in a technical chute painted in black , in order to blend into the industrial decor. -
Refrigerant path and wiring
Refrigerant lines are run a short distance to the outside to limit pressure losses. Bends are made to a minimum radius and each connection is nitrogen brazed . The communication cable and power supply are physically separated from the door power cables to avoid interference. -
Breath management near an opening
The needs are contradictory: to cut off air infiltration during frequent openings without blowing directly onto users. We calibrate the direction of the shutters to create a light air curtain over the passageway while promoting sufficient recovery in the upper part.
Execution Details: What Makes the AirGreen Difference
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Clean drilling with bulkhead and waterproof interior/exterior finish.
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Deep vacuum (< 500 microns) and test to ensure a dry, leak-free circuit.
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Refrigerant charge checked according to actual line length, with compensation if required by the manufacturer.
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Measurement of hot and cold parameters : intensity, superheating/subcooling, ΔT in blowing, in order to validate seasonal performance.
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Remote control programming : temperature ranges, dehumidification mode for Montreal summers, setpoint locking to prevent deviations in a multi-user environment.
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Aesthetic finish : trunking and fasteners in harmony with the dark decor, clean passage along the mechanical elements, logical and serviceable routing.
Result: stable comfort, contained noise, controlled costs
From the start of service, we observe:
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a uniform temperature throughout the volume, despite variations due to door openings;
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a very discreet noise level near workstations and the counter;
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appreciable responsiveness during load changes (arrival of customers, light cooking, sun on the facade);
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energy savings linked to inverter modulation and automatic shutdown outside of occupied hours.
For this type of premises, the heat pump is used all year round: supplementary heating in winter, air conditioning and dehumidification in summer, which also protects materials and equipment.
Best practices and points of vigilance in light industrial spaces
Our teams share here some recommendations from the field:
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Height and obstacles : always check the trajectory of moving elements (chains, arms, rails) and provide a protective screen if the environment is changing.
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Condensates : use a pump with a transparent tank and a disconnect for quick maintenance; provide an overflow alarm or safety cut-off.
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Electricity : dedicated power supply with identified circuit breaker , wiring away from friction zones and high current lines.
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Filtration : If the activity generates dust or grease, add a washable pre-filter and schedule more frequent HVAC maintenance .
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Blowing : In high-ceilinged spaces, use an automatic speed and an air blade directed towards occupied areas to avoid stratification.
HVAC Maintenance: Ensuring Durability and Performance
We offer an annual HVAC maintenance plan tailored to small businesses:
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cleaning of filters and exchanger, checking of condensate pump;
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checking electrical connections , tightening and insulation;
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control of refrigeration parameters in operation;
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inspection of chutes and discharge slope ;
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update of instructions according to seasonal occupancy.
Regular maintenance maintains performance, extends the life of the device and prevents unplanned shutdowns.
About Grants
Wall-mounted heat pumps may be eligible for assistance when they meet efficiency and cold weather performance criteria. For residential use , programs in Quebec are well established; for commercial premises , eligibility depends on the nature of the activity and the building. We recommend a case-by-case verification : our team assists clients in preparing files.
AirGreen in Greater Montreal: expertise, responsiveness, quality
Whether you are in Montreal , Laval , Longueuil , on the North Shore or the South Shore , our team understands the constraints of Montreal buildings: old bricks, lofts, modernized workshops, plexes and condos. We size the heat pump based on the actual thermal load (insulation, infiltration, exposure), then we plan an installation that respects your activity and limits service interruptions.
AirGreen – Heat Pumps, Air Conditioning & Heating
A single point of contact for study , installation , commissioning and maintenance . Your comfort has no seasons.