Diagnose no-heat, cycling, airflow, thermostat/control and unusual furnace operating problems without unsafe DIY guidance.
West Vancouver
We diagnose and repair gas furnaces throughout West Vancouver — Ambleside, Dundarave, British Properties, Caulfeild and Horseshoe Bay. Hillside and multi-level homes in West Vancouver often have mechanical rooms in constrained locations and duct systems that distribute heat across several floor levels, which can affect how a heating fault presents and what's needed to properly diagnose it.
The furnace runs but the home doesn't warm up, or heating cuts out before reaching setpoint. Common causes include a failed ignitor or flame sensor, a tripped limit switch, or a control fault. Intermittent problems that seem to self-correct are worth investigating — they often escalate.
A furnace that starts and stops more frequently than normal — short-cycling — may be overheating due to restricted airflow, a faulty limit switch, or an oversized system. In multi-level West Vancouver homes, poor duct balance can also cause the main floor to reach setpoint while upper floors remain cold.
Low airflow from registers may point to a blocked filter, failing blower motor, or duct restriction. In larger West Vancouver homes with extended duct runs, uneven heating across zones often has both a mechanical and a distribution cause — we assess both.
If the furnace doesn't respond correctly to thermostat settings — running continuously, not starting, or showing fault codes — the issue may be the thermostat, control board wiring, or a sensor fault. We test the full control circuit before replacing any component.
Banging on startup, rattling during operation, or a high-pitched squeal can indicate a cracked heat exchanger, loose panels, or a failing motor bearing. Error codes displayed on the furnace board are a starting point — they identify the fault category, not necessarily the specific failed part.
A furnace that locks out and won't restart has usually tripped a safety control — high-limit, pressure switch, or flame supervision. These shutdowns protect the home and the equipment; the underlying cause should be diagnosed before resetting and restarting.
Do not attempt to bypass safety controls, modify gas connections, adjust combustion settings, or open the heat exchanger compartment. Gas furnace repairs involving the burner, heat exchanger, venting, or gas train are performed by licensed gas-fitting technicians under BC safety regulations. If you smell gas, leave the building and contact FortisBC or your local emergency services.
What to Expect
A furnace fault is diagnosed systematically — control circuit, airflow, combustion, heat exchanger — before any repair is quoted.
We review the fault codes, operating history and visible condition of the furnace. In West Vancouver homes, we also note mechanical room access and the duct layout across levels — relevant context for airflow and distribution problems.
We test the thermostat, control board, wiring, sensors and safety switches — confirming what the control circuit is actually doing, not just what the fault code suggests.
We measure static pressure and check the blower, filter and duct system. Larger West Vancouver homes with extended multi-level duct runs sometimes have airflow restrictions that aren't obvious from a single register check.
We inspect the burners, ignitor, flame sensor and — where indicated — the heat exchanger. A cracked heat exchanger is a safety issue; we report findings clearly so you have the information to make a repair or replacement decision.
We explain what's wrong, what the repair involves, and whether repair or replacement makes more sense for the equipment's age and condition — then proceed with your approval.
Decision Guide
The right choice depends on what's actually failed, the equipment's age and what the repair costs relative to a new system.
If replacement is the right call, see our furnace replacement Vancouver page for guidance on what replacement involves, or our furnace installation West Vancouver page for site-specific considerations.
Weighing a heat pump instead? See heat pump installation West Vancouver or our heat pump vs furnace in BC comparison.
Common Questions
Yes. We diagnose and repair gas furnaces across West Vancouver — Ambleside, Dundarave, British Properties, Caulfeild and Horseshoe Bay. West Vancouver's multi-level and hillside homes sometimes have airflow and distribution considerations that affect how a heating problem presents, and we account for those in diagnosis.
Common causes include a dirty air filter restricting airflow, a faulty ignitor or flame sensor preventing the burner from firing, a tripped limit switch from overheating, a thermostat or control fault, or a failed inducer or blower motor. Some of these reset or self-correct temporarily before failing again — intermittent heating is worth investigating rather than ignoring.
The right call depends on the diagnosis, equipment age and what the repair actually costs relative to replacement. A newer furnace with a single failed component usually warrants repair. An older system requiring a heat exchanger or major component replacement — particularly one already near the end of its service life — may be more economical to replace. We give a straightforward assessment after diagnosis.
The specific component that needs replacement, the furnace model and age, parts availability and whether the system is accessible in a constrained mechanical space all affect cost. A diagnostic visit establishes what's actually wrong before any repair work is quoted.
Yes — we service and repair natural gas furnaces throughout West Vancouver. Gas furnace repairs involving combustion components, gas connections or heat exchanger inspection are performed by our licensed gas-fitting technicians.
We diagnose the actual fault before quoting any repair — no pressure toward replacement unless the numbers genuinely support it.