Furnace installation costs in Montreal, QU typically range from 4,000 to 9,000, driven primarily by the unit's BTU output, ductwork modifications required for your home's layout, and local labor rates in the QU market. Older homes in Montreal often need plenum resizing, duct sealing, or return-air pathway upgrades that add significantly to the base equipment cost. Winter urgency—when furnace failures spike—can also push Montreal pricing toward the higher end of that range due to demand compression.
What affects the price
- Equipment tonnage and AFUE rating. A high-efficiency variable-stage furnace (95+ AFUE) costs substantially more than an 80 AFUE single-stage unit, both in equipment and in venting material upgrades (PVC exhaust piping vs. metal). The BTU output must match your home's heat loss calculation—oversizing wastes money; undersizing leaves cold spots.
- Ductwork scope and access. If existing ducts need cleaning, sealing, or partial replacement to achieve proper static pressure and air balance post-installation, labor compounds quickly. Crawlspace vs. attic routing, and whether the installer must work around finished ceilings or drywall, directly drives labor hours.
- Crew composition and company overhead. A two-person crew can complete a straightforward change-out in one day, but charges higher hourly rates than a solo technician. Larger established firms with office staff, service vehicles, and full bonding typically charge 15–25% more than independent installers with the same certifications, reflecting their operational cost structure.
- Thermostat and control upgrades. Replacing an old mercury or mechanical thermostat with a new Wi-Fi programmable or smart unit adds $300–$600. Disconnect/reconnect of existing low-voltage wiring and voltage verification work into labor cost if the old system lacks proper C-wire infrastructure.
- Rush or emergency timing. Same-day or after-hours installation requests incur service call premiums (often $150–$300 additional) and may force smaller crews or extended hours. Scheduled installations during normal business hours avoid these surcharges and allow better parts staging.
What building codes apply to furnace installation in Montreal?
Furnace installation in Montreal must comply with the Building Code chapter, which was most recently updated based on the National Building Code of Canada 2015 and took effect on January 8, 2022. Additionally, energy efficiency standards for buildings came into force on July 13, 2024, and may apply to your installation. Any contractor you hire must comply with all applicable Construction Code requirements.
How can I verify that my furnace contractor is properly licensed?
You can verify a contractor's license status by consulting the Licence holders' repertory. This allows you to confirm that your contractor is authorized and in good standing before hiring them for your furnace installation.
Are there electrical code requirements for furnace installation?
Yes, the Electricity Code chapter applies to furnace installation work. The most recent amendments to this code became effective on October 1st, 2018. Your contractor must ensure compliance with these electrical code requirements as part of the installation process.