Quote within 24 hours Heat pump · Air conditioner · Wall-mounted & central

Heat pumps and air conditioners in Saint-Sébastien

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The largest selection in Quebec, residential and commercial!

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QuoteWithin 24 hAfter the estimate, residential and commercial.
EstimateFree, remoteBy video, photos or email, anywhere in Saint-Sébastien.
LicenceRBQ 5645-9605-01Subclasses 15.8, 15.10 and 16.
PermitTo be confirmedSee the bylaw summary
01 · Residential

Some residential air conditioning, ventilation and heating categories in Saint-Sébastien

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SHARP CPU Airest Wall Mounted Heat Pump | 12,000 BTU | Montreal, Laval, South Shore & North Shore

In Stock at AirGreen!

A New Standard in Air Conditioning and Air Purification!

SHARP CPU Airest Wall Mounted Heat Pump | 12,000 BTU | Montreal, Laval, South Shore & North Shore

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02 · AirGreen in Saint-Sébastien

AirGreen in Saint-Sébastien

Execution foundations for new facilities in Saint-Sébastien

AirGreen is a family-owned HVAC company based in Montreal, operating for over 15 years, with installation capabilities spanning residential, commercial, and industrial projects. Our expansion on the South Shore is supported by our Boucherville showroom, which facilitates site preparation, standardized methods, and resource coordination, without limiting the scope of our operations. In Saint-Sébastien, we undertake new installation projects, structuring the execution around concrete technical parameters:

  • layout plan and distribution logic
  • electrical integration and control architecture
  • routing, supports, and clearances for a durable installation.

System typologies and logic of adaptation to real-world uses

The work presented here focuses exclusively on new systems, chosen to suit the building, its occupancy, and its energy objectives. We install wall-mounted heat pumps, wall-mounted air conditioners, central heat pumps, central air conditioners, multi-zone systems, air-to-water systems, PTAC/VTAC solutions, as well as ventilation systems (air exchangers, humidity control, fresh air supply). These configurations are applicable to houses, multi-unit residential buildings, commercial spaces, and mixed-use buildings, based on a rational selection process that considers:

  • building envelope characteristics, volumes, and distribution constraints
  • usage profiles and needs per zone
  • thermal loads and performance objectives
  • targeted energy efficiency and stable operating costs.

Reliability-oriented implementation chain with consistent performance

A successful new installation depends on a sequenced process that ensures compatibility and performance from the outset. Our approach includes system analysis and load assessment, followed by a compatibility check between the equipment, power supply, controls, accessories, and air or water distribution. Installation coordination relies on precise checkpoints to prevent deviations in execution:

  • unit placement and support management
  • connections (refrigerant, hydraulic, drainage) and protections
  • cabling, communication, and control configuration.

Commissioning completes the sequence with adjustments, validations, and warm-up to ensure reliable, scalable, and stable long-term operation.

Compliance, document transfer and relevance for Saint-Sébastien

Quality of execution incorporates regulatory compliance, coordination, and traceability to support sustainability, operational stability, and energy efficiency over time. Commissioning procedures are accompanied by structured documentation and a clear system handover:

  • configuration parameters and control benchmarks
  • compliance and connection elements
  • operating instructions that promote actual performance.

AirGreen also assists clients in understanding applicable Hydro-Québec and federal subsidy programs, without presenting them as guaranteed or as an outsourced administration. This disciplined approach is particularly relevant in Saint-Sébastien, where load variations, volumes to be served, and fresh air requirements demand consistent and verified technical integration. A properly sized new system, installed and commissioned according to a documented method, remains the foundation for stable and measurable performance.

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03 · Permits and bylaws

Permits and Regulations: Saint-Sébastien

If you are planning an air conditioning, ventilation or heating project in Saint-Sébastien, it is essential to find out beforehand whether you need to obtain a permit.

Furthermore, it is strongly recommended to consult the regulations in force concerning the installation of heat pumps or air conditioners to ensure a compliant and trouble-free implementation!

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What the bylaw says
Permit
To be confirmedNot specified: heat pumps are not in the permits bylaw’s lists; confirm with the inspector
Distance from lot lines
Not specifiedNo rule specific to heat pumps in the zoning bylaw: confirm with the inspector
Noise limit
Not specifiedNoise bylaw 480 (RM-420): no decibel figure; any device that disturbs the neighbours is not allowed from 11 p.m. to 7 a.m.

Permits and bylaws · Checked on September 30, 2026. Summary only: the official bylaw prevails.

04 · Our installations

Some of our recent installations across Québec

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05 · Brands

Some of our partners in Saint-Sébastien

FUJITSU: Air Conditioning, Ventilation & Heating | Montreal, Laval, Longueuil, South Shore and North ShoreHITACHI: Air Conditioning, Ventilation & Heating | Montreal, Laval, Longueuil, South Shore and North ShoreSAMSUNG: Air Conditioning, Ventilation & Heating | Montreal, Laval, Longueuil, South Shore and North ShoreLG: Heating, Ventilation & Air conditioning | Montreal, Laval, Longueuil, South Shore and North ShoreSHARP : Heating, Ventilation & Air Conditioning | Montreal, Laval, Longueuil, South Shore and North ShoreMIDEA: Air Conditioning, Ventilation & Heating | Montreal, Laval, Longueuil, South Shore and North ShoreGREE : Heating, Ventilation & Air Conditioning | Montreal, Laval, Longueuil, South Shore and North ShoreDIRECT AIR: Air Conditioning, Ventilation & Heating | Montreal, Laval, Longueuil, South Shore and North ShoreCANAIR: Air Conditioning, Ventilation & Heating | Montreal, Laval, Longueuil, South Shore and North ShoreELIOS: Air Conditioning, Ventilation & Heating | Montreal, Laval, Longueuil, South Shore and North ShoreBOSCH : Heating, Ventilation & Air Conditioning | Montreal, Laval, Longueuil, South Shore and North ShoreFORESTAIR: Air Conditioning, Ventilation & Heating | Montreal, Laval, Longueuil, South Shore and North Shore
Buying guide

Don’t make the mistake of buying a wall-mounted system without reading our 2025-2026 Buying Guides! Discover the best models, our tips for saving money, and everything you need to know before making your choice. Open the guide and make a smart investment now!

AirGreen is proud to be part of:
AirGreen refrigeration team
06 · Careers

Career: Join the AirGreen team in Saint-Sébastien!

Join our dynamic team at AirGreen! We have several positions available in the Saint-Sébastien area and the rest of the Montérégie region!

  • Refrigeration Technician / Refrigeration Specialist
  • HVAC Installer
  • Duct installers
  • Apprentices
  • Sales Representative
  • Customer Service Representative
  • Maintenance staff
  • Estimator
  • Warehouse staff
  • Project Manager
  • And many others!

See our job offers and apply now!

AirGreen · Air conditioning and heating

A heat pump or air conditioner project in Saint-Sébastien?

We assess your project remotely, by video, photos or email, and the estimate is free.

RBQ licence 5645-9605-01Subclasses 15.8, 15.10 and 16.
Free remote estimate
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