Licensed, Red Seal technicians — same-day response across Metro Vancouver. Call (604) 359-1081 or request a free quote.
Tell us what you need—we’ll call you back fast.
A gas furnace heats air via combustion, then distributes that air through ductwork to vents in each room. The process is straightforward but every component matters for efficiency and safety.
Free in-home consultation. Free written quote. TSBC-licensed installers. Call (604) 359-1081 or request a quote online.
Gas burner: Mixes natural gas with air and ignites. Heat exchanger: Sealed metal chamber where combustion gases heat the air without mixing. Blower: Pushes air across the heat exchanger and through the ductwork. Vent/flue: Carries exhaust gases outside. Control board: Manages ignition timing, blower speeds, and safety lockouts.
1. Thermostat closes the heat-call circuit. 2. Inducer fan starts. 3. Pressure switch verifies inducer is running. 4. Hot-surface ignitor (or pilot, on older units) energizes. 5. Gas valve opens. 6. Burner ignites. 7. Flame sensor confirms flame. 8. After short purge, blower starts pushing warm air through ducts. 9. When room reaches setpoint, gas valve closes; blower runs another minute to extract residual heat from heat exchanger.
Standard 80% AFUE furnaces vent hot exhaust up a chimney — losing 20% of fuel energy. Condensing (95%+ AFUE) furnaces extract additional heat from the exhaust by cooling it below its dew point. The condensate is mildly acidic water that drains to a floor drain.
Vancouver climate is mild — most furnaces run intermittently for 8 months of the year, full-time for 1-2 weeks during cold snaps. This makes oversized furnaces (a common BC retrofit mistake) waste fuel through short-cycling. Modern modulating burners and outdoor reset compensate.
Skipping annual service loses 5-15% of rated AFUE within 2-3 years due to flame sensor fouling, burner residue, and combustion calibration drift. CANRO annual service includes combustion analysis at low and high fire.
Free in-home consultation. TSBC-licensed technicians. FortisBC rebate paperwork handled.
📞 (604) 359-1081 Request a quoteCANRO Heating & Cooling — TSBC Class-A gas-fitting licence · Red Seal HVAC certified · WorkSafeBC and liability insured · 4.9★ from 85+ Google reviews · Serving Metro Vancouver since 1999.
CANRO Heating & Cooling — TSBC Class-A gas-fitting licence · Red Seal HVAC certified · WorkSafeBC and liability insured · 4.9★ from 85+ Google reviews · Serving Metro Vancouver since 1999.
Metro Vancouver homes have specific requirements when it comes to furnaces, driven by climate, code, and the local housing stock. This page covers the essentials. A modern high-efficiency gas furnace in Metro Vancouver operates at 95-98% AFUE, modulating its burner output between 40% and 100% to match demand. Vancouver's mild climate means short, frequent run cycles, which favours variable-speed ECM blowers and two-stage or modulating gas valves.
Metro Vancouver's housing stock ranges from early-1900s character homes with hydronic radiator systems to modern condos with combi boilers — equipment selection and serviceability vary dramatically by housing era. CANRO has worked with furnace systems across Metro Vancouver since 1999, including installations and service calls in Broadmoor, Sullivan, Seafair and Steveston.
Sizing. Proper furnace sizing requires a Manual J load calculation — most Vancouver homes need 50,000-90,000 BTU, but oversized furnaces short-cycle, accelerate component wear and produce uneven temperatures.
Lifespan. A well-maintained high-efficiency gas furnace lasts 15-20 years in Vancouver. The single biggest factor in lifespan is annual professional servicing — combustion analysis, condensate trap cleaning, and igniter inspection prevent 80% of mid-life failures.
Warning signs. A failing furnace usually announces itself: short-cycling, yellow flame (should be blue), rising gas bills, uneven heating between rooms, banging on startup, or persistent error codes on the control board.
A typical residential high-efficiency gas furnace installation in Metro Vancouver costs $4,500-$8,500 including the equipment, venting, gas-line work, permit, electrical, and removal of the old unit. Variable-speed and modulating models are at the upper end. CANRO provides three quote tiers (good/better/best) so you can choose the right balance for your home and budget.
Yes — for most Metro Vancouver homes, a cold-climate heat pump alone provides 100% of heating needs down to -10°C. Some homeowners choose a dual-fuel setup (heat pump + small gas furnace as back-up for the rare deep cold snap), but this is rarely necessary in our climate.
Short-cycling typically indicates one of: an over-sized furnace for the home, a dirty flame sensor, a clogged condensate drain triggering shutdown, low gas pressure, a failing limit switch, or a thermostat located in a non-representative spot (in direct sunlight, near a vent). All are diagnosed quickly during a service call.
Yes. Annual professional servicing catches 80% of mid-life failures before they cause a no-heat call. It also keeps manufacturer warranties valid — most are voided by missing scheduled maintenance. The service includes combustion analysis, heat-exchanger inspection, flame-sensor cleaning, blower-motor check, condensate-trap clearing, and a full safety test for carbon monoxide.
For Metro Vancouver homes, 95-97% AFUE is the sweet spot — high enough to qualify for FortisBC rebates and capture nearly all available efficiency gains, but without paying a premium for the very last 1-2% from 98% AFUE modulating units. ENERGY STAR-certified models above 95% AFUE are required for current rebate programs.
Two-stage furnaces (high/low burner) are a good fit for most Vancouver homes — they cut short-cycling and run quieter than single-stage units. Modulating furnaces (continuously variable burner output) are worth the premium in larger homes (3,000+ sq ft), homes with significant temperature zones, or homes prioritising the absolute quietest operation.
To book furnace service or get a free written quote for installation, call CANRO at (604) 359-1081 or email info@canroheat.ca. We service all of Metro Vancouver including Broadmoor, Sullivan, Seafair and Steveston.
This guide was written by the CANRO Heating & Cooling team based on 25+ years of furnace installation, repair and annual service work across Metro Vancouver. Last reviewed May 2026.
“Canro does an amazing job! Super professional and skilled with everything—boilers, furnaces, and AC. Always a pleasure working with them!”
“Five stars for Canro. We needed a replacement of a 30-year-old boiler. A new high-efficiency unit was installed—clean, professional work.”
“I can’t speak highly enough about George, who was recommended for a boiler service call for my parents’ home. George is excellent.”
25+ years keeping Metro Vancouver homes comfortable. Honest advice, upfront pricing, work that lasts.