Replacing an aging furnace with a new KeepRite unit is mostly a sizing and venting exercise, and Maple Ridge's mix of older basements and newer hillside builds changes both.
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Quick answer
A KeepRite furnace installation in Maple Ridge typically runs a full day, starting with a load calculation for the specific house rather than a straight swap of the old unit's size. The job includes removing the old furnace, matching duct transitions, running new venting where the code has changed since the original install, and a combustion test before the technician signs off. Ballpark cost for a residential gas furnace installation is $4,500 to $9,500+, confirmed after a home visit, not a quote given over the phone.
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.
Homeowners often ask for a specific KeepRite model by tonnage or BTU because that's what the last one had, but a proper installation starts from a room-by-room heat loss estimate, not the label on the old furnace. Houses in Maple Ridge's older pockets around Hammond and downtown were often built with less insulation and single-pane original windows later replaced, which changes the actual heat loss even if the square footage looks the same as a newer build.
Newer construction in Silver Valley and Albion tends to be tighter and better insulated, so an oversized furnace there short-cycles, wastes gas, and wears out its heat exchanger faster from constant on-off stress. A technician sizes to the house as it sits today, not to a rule of thumb.
The old furnace comes out first, along with any duct and vent connections that don't meet current code. Maple Ridge homes with furnaces installed before the mid-2000s sometimes vented into a shared masonry chimney that a new high-efficiency furnace can't use; those need new dedicated PVC venting run out through the wall or roof.
On hillside lots in Silver Valley, access to the mechanical room can be tighter, and condensate lines need a clear path to a drain that won't freeze near an exterior wall in a cold snap.
A mid-efficiency KeepRite still needs a metal vent sized correctly for the appliance and the existing chimney or vent run; a high-efficiency condensing model vents through PVC pipe with a separate intake for combustion air. Getting the intake and exhaust terminations far enough from windows, doors, and each other is a code requirement, not a preference, and it's one of the first things an inspector checks.
Older Hammond-area homes with a converted coal or oil chimney sometimes have flue dimensions that don't suit a modern furnace at all, which is why a technician checks the venting path before quoting anything rather than after the sale.
A residential gas furnace installation in the Maple Ridge area runs roughly $4,500 to $9,500+ as a ballpark, not a quote — the final number depends on the furnace size, whether venting needs to be rerouted, duct modifications, and how accessible the mechanical space is. A straightforward like-for-like swap in a Silver Valley basement with existing PVC venting sits toward the lower end; a Hammond home needing new venting off an old chimney system sits higher.
CANRO confirms pricing after seeing the actual furnace, ducting, and venting in person — not from a description over the phone.
Most homeowners book after a furnace has already started failing repairs or after a technician flags that the current unit is near the end of its practical service life. CANRO's gas fitters hold Technical Safety BC gas licence LGA0043870 and can walk through sizing, venting, and timeline specifics for your particular Maple Ridge address before scheduling install day.
Safety note
If you ever smell gas near the furnace or notice soot, a scorched smell, or a pilot that burns yellow instead of blue, leave the house first and call FortisBC's emergency line at 1-800-663-9911 from outside. Only a Technical Safety BC licensed gas fitter should open the burner compartment or adjust gas-carrying components.
A standard residential swap usually takes one working day from removal of the old unit to a completed startup test. If venting needs to be rerouted or ductwork modified, it can extend into a second day.
Yes, gas furnace installations require a permit and inspection through the local permit authority. CANRO's licensed gas fitters handle the permit application as part of the job.
Often yes, though the technician checks duct sizing against the new furnace's airflow requirements first. Undersized or leaky ducts get flagged since they affect how well the new furnace actually performs.
No — an oversized furnace short-cycles, which is harder on the heat exchanger and blower and doesn't heat more evenly. Correct sizing comes from a heat loss calculation for your specific house.
CANRO removes and disposes of the old unit as part of the installation, along with any venting or ductwork that's being replaced.
It can affect access to the mechanical room and condensate drain routing, and on some lots the technician plans the exterior vent termination around drifting snow or wind exposure common on the slope.
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