What to expect from a Lennox gas furnace installation in a Vancouver home, from load calculation and venting to what happens on installation day.
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Quick answer
CANRO installs and services Lennox natural-gas furnaces across Vancouver as one of several major furnace brands we work with regularly. A Lennox installation follows the same core steps as any quality furnace job — a proper heat-load calculation for your specific home, sizing that matches the ductwork rather than just the old furnace's output, correct venting for the model chosen, and a full commissioning test before the crew leaves. Lennox's residential furnace lineup includes options built around quieter operation and finer temperature staging, which some homeowners specifically ask for in layouts where the mechanical room sits close to living space.
Need a licensed gas fitter for your gas furnace? Call CANRO at (604) 359-1081 — residential natural-gas heating and hot water across Metro Vancouver since 1999.
Lennox is one of the more recognized names homeowners bring up when they're researching a furnace replacement, and part of that comes down to the brand's reputation for quieter-running equipment and finer control over heat output — features that matter more in some homes than others. In a character house with an open stairwell running straight from the furnace room to a second-floor bedroom, or a narrow rowhouse where the mechanical closet backs onto a living room wall, a quieter unit is a genuinely practical upgrade, not just a marketing point.
We're not a Lennox dealer with any special factory status to claim, and we won't pretend otherwise — CANRO is an independent licensed contractor that installs and services furnaces from all the major manufacturers, sourcing equipment and parts through normal supply channels the same as we do for any brand.
The single most common mistake in furnace replacement isn't brand choice — it's sizing. A furnace that's oversized for the home short-cycles, wears out its components faster, and leaves rooms unevenly heated. Undersized, and it runs constantly without ever quite catching up on a cold snap. CANRO calculates the actual heat load for your home based on square footage, window area and orientation, insulation levels, and ceiling height, rather than just matching the BTU rating of whatever furnace is currently installed, which may have been oversized from day one.
Vancouver's older character homes present a particular sizing challenge: single-pane original windows in some rooms, retrofit double-glazing in others, and additions built at different points with different insulation standards. A load calculation that accounts for that room-by-room variation, rather than treating the house as one uniform envelope, gives a much more accurate sizing result.
High-efficiency condensing furnaces vent through PVC pipe out a sidewall rather than up a chimney, which opens up placement options in homes that never had a proper flue to begin with — common in additions and basement conversions across the city. But sidewall venting has its own rules: minimum clearance from windows, doors, and property lines, and clearance from the neighbour's air intake if the lots sit close together, which is a real consideration on many of Vancouver's narrower older lots. CANRO checks these clearances against the current code before quoting a location, not after the furnace is already sitting in the driveway.
In homes with an existing masonry chimney serving an older furnace, switching to a high-efficiency model usually means abandoning that chimney for the furnace and venting through the sidewall instead, since condensing furnace exhaust is too cool to draft properly up a traditional flue.
A residential gas furnace installation in Vancouver typically falls in the $4,500 to 9,500+ ballpark, with the exact number depending on the equipment tier chosen, whether venting needs to be relocated, ductwork condition, and electrical requirements for the new unit. That's a ballpark, not a quote — CANRO confirms exact pricing after a home visit where the technician can see the actual mechanical room, existing ductwork, and venting path.
Rebate programs from FortisBC, CleanBC, and the federal government do change from year to year, and some apply to qualifying high-efficiency installations — confirm current eligibility with the relevant program directly, since we don't guess at what's active at any given time.
Safety note
Furnace installation involves gas line connection, venting, and combustion safety testing that must be done by a Technical Safety BC licensed gas fitter. CANRO holds gas licence LGA0043870. If you ever smell gas in your home, leave immediately and call FortisBC at 1-800-663-9911.
No — CANRO is an independent licensed HVAC and gas contractor. We install, service, and source parts for Lennox furnaces along with several other major brands, without claiming any factory or authorized-dealer status.
A straightforward like-for-like replacement is usually a one-day job. If venting needs to be rerouted, ductwork modified, or electrical upgraded, it can extend to a second day depending on the scope.
Yes. CANRO pulls the required permit through the applicable municipal authority as part of the job and coordinates any required inspection — this isn't optional for gas appliance work.
Often yes, though it depends on the duct sizing relative to the new furnace's airflow requirements. The technician checks this during the assessment and will flag it if modifications are needed for proper performance.
Generally yes, particularly moving from an older single-stage unit to a newer model with better cabinet insulation and staged operation, though how noticeable it is depends on the furnace room's location relative to living space.
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