Emergency Furnace Repair in Greater Vancouver – Same-Day Service

What should I do first if I smell gas or my CO alarm goes off near the furnace?

Get everyone out of the home, including pets, and leave the door open behind you. Do not flip light switches, unplug anything, use the furnace switch, or start a car in an attached garage, because any of these can make a spark. Once you are outside and well away from the house, call the FortisBC emergency line or 911. Do not go back inside until the gas utility or fire department says it is safe.

A carbon monoxide alarm is a different warning from a gas smell, and it matters more. Natural gas has an added odour so you can smell a leak. Carbon monoxide has no smell and no colour. It builds up when a furnace burns fuel poorly, or when exhaust cannot leave through the vent because of a cracked heat exchanger, a blocked flue, a disconnected vent pipe or a failed draft inducer. Headaches, dizziness, nausea or sleepiness that ease when you step outside are classic warning signs. Treat any CO alarm as real until a qualified person proves it is not.

After the utility or fire crew has made the home safe, the furnace may be shut off or tagged. That is when a licensed gas technician comes in to find out why it happened, fix it, and test combustion and venting before the appliance runs again. Every step on the gas side of the appliance, including relighting, is licensed work in BC.

• Gas smell or hissing near the furnace or gas meter: leave the home, then call the gas utility or 911 from outside.
• CO alarm sounding, with or without symptoms: leave the home, then call 911 from outside.
• Burning plastic or electrical smell, or visible scorching: switch the furnace off at the service switch if you can reach it safely, then call a technician.
• No heat with no smell and no alarm: work through the homeowner checks below, then call for repair.

Why is my furnace running but blowing cold air, or not starting at all?

A modern gas furnace runs a fixed start-up sequence each time the thermostat calls for heat. The control board starts the draft inducer, confirms venting through the pressure switch, lights the igniter, opens the gas valve, proves the flame with the flame sensor, and only then starts the main blower. If any step fails, the board shuts the gas off and retries. After a few failed tries it locks out. That is why a no-heat call often looks like cold air from the vents, a furnace that clicks and hums but never lights, or a unit that lights for a few seconds and then shuts off.

The table below links common symptoms to their usual causes and shows who should deal with each one. Many furnaces flash a fault code on a small LED on the control board. What each flash pattern means varies by manufacturer and model. Read the chart printed inside the door panel or in the manual rather than guessing.

Can I reset my furnace myself, and when should I stop trying?

You can safely do a single reset. Turn the thermostat down, switch the furnace off at the service switch, which usually looks like a light switch on or near the unit, wait a minute, switch it back on and raise the thermostat. If the furnace lights and runs a full cycle, a brief glitch may have caused the lockout. Still book a service visit, because a lockout that clears itself often comes back when the weather is coldest.

Stop after one or two tries. Resetting a furnace again and again pushes unburned gas through a system that is already telling you something is wrong. It can overheat parts, and it can hide the real fault code the technician needs. Never hold down a limit switch reset button more than once, never bypass a switch with a jumper wire, and never take the burner compartment apart. In BC, work on the gas valve, burners, manifold, venting and gas piping belongs to licensed gas fitters. Most line-voltage electrical work is licensed too.

Safe homeowner jobs are the thermostat settings and batteries, the breaker, the service switch, the air filter, making sure the blower door is fully seated, opening supply and return grilles, and clearing leaves or snow from outdoor intake and exhaust pipes without taking them apart. Anything past that is a job for a technician.

Why do furnaces in Metro Vancouver break down during the first cold snap?

Our winters are mild and wet, so many furnaces run at low demand for months. Then a few days of Arctic outflow wind push them to run almost nonstop. That sudden jump in run time is when weak parts give out. A flame sensor that was just good enough in November fails once the burner has to relight every few minutes. An inducer motor with worn bearings stalls after hours of steady use. An igniter near the end of its life cracks on the next cold start.

Moisture matters here too. High-efficiency furnaces make condensate, and when a trap or drain line has been slowly filling with debris, it tends to back up on the first heavy-use day. On homes with sidewall venting, wet leaves in autumn and the odd heavy snowfall can block the plastic intake and exhaust pipes. That trips the pressure switch, and the furnace refuses to light. In older Burnaby, East Vancouver, New Westminster and North Shore homes, the ductwork is often undersized or partly closed off. The furnace then runs hot against the high-limit switch and short cycles.

Strata townhouses and older multi-unit buildings bring their own problems: furnaces in tight closets, shared vent routes, and rules about who may enter the mechanical area. If you live in a strata, tell the technician about access and parking when you call. That way the visit is spent on the furnace, not on getting in the door.

What happens if the technician red-tags my furnace?

A red tag means a gas technician found a condition that makes the furnace unsafe to run. They shut off the gas to the appliance and attach a written notice. Typical reasons include a cracked or perforated heat exchanger, exhaust spilling back into the home, a damaged or disconnected vent, a gas leak at the appliance, or scorched wiring. Under BC gas safety rules the appliance must not be used again until the problem is corrected and a licensed person has checked it.

A red tag is not a sales tactic. It is a safety record. Ask the technician to show you what they found, such as the crack, the combustion test reading or the spillage, and to write the reason clearly on the tag and on your invoice. If a second opinion would help you decide, you can get one, but the furnace stays off until the fault is fixed. Never remove a red tag or relight a tagged furnace yourself.

Should I repair or replace a furnace that failed in an emergency?

Most emergency calls end in a repair, not a replacement. Igniters, flame sensors, pressure switches, inducer motors, limit switches, capacitors and blower motors are replaceable parts, and changing one usually brings back reliable heat. A control board is one of the more costly parts on a gas furnace. Even so, replacing one often makes sense on a furnace that is otherwise in good shape.

Replacement becomes a real option when the heat exchanger has failed, when parts for an older model are hard to get, when you have had several breakdowns in a short time, or when the furnace is badly oversized or undersized for the home. It is also worth considering if you have been thinking about a heat pump paired with a gas furnace. That dual-fuel setup uses the heat pump for most of our mild weather and switches to the furnace during cold snaps. If replacement comes up, ask for a written quote for both the repair and the replacement, so you can compare them side by side instead of deciding under pressure on a cold night.

If heat has to come back tonight and the furnace can be repaired safely, a sensible plan is often to fix it now and plan the replacement for the spring, when you have time to compare options.

More furnace questions

Is a yellow or orange flame on a gas furnace an emergency?

Yes, treat it as one. A gas furnace burner should burn mostly blue with a crisp, steady shape. A lazy, floating, yellow or orange flame tells you the gas is not burning completely, and incomplete combustion is where carbon monoxide comes from. Turn the thermostat off, do not keep running the furnace to stay warm, and call a licensed gas technician. If a CO alarm is sounding or anyone feels headachy, dizzy or nauseous, leave the home first and call 911 from outside.

Do not confuse this with a gas fireplace. Decorative fireplace log sets are designed to burn yellow. A furnace burner is not. The table below is what we look at on site when a homeowner reports an odd flame. A homeowner can look through the sight glass if the furnace has one; removing burner doors, adjusting gas pressure or cleaning burners is licensed gas work.

Why does my furnace keep shutting off during a freeze?

Repeated shutdowns in a cold snap almost always mean a safety control is doing its job. The furnace starts, a sensor sees something wrong, and it locks itself out. Resetting it over and over only buries the real fault. On a high-efficiency furnace in the Lower Mainland, the most common causes we find during a freeze are a frozen or blocked condensate line, snow or frost over the plastic intake and exhaust pipes on the side of the house, a dirty flame sensor, and an overheating heat exchanger from a clogged filter or closed registers.

Our freezes are short but they catch homes unprepared. Condensate lines routed through an unheated garage or crawlspace can ice up overnight, and a sidewall vent under a deck or low eave can drift in with wet snow. Those two failures look identical to a broken furnace from the thermostat.

• Safe for a homeowner: check that the sidewall intake and exhaust pipes outside are clear of snow and ice, replace a clogged filter, open supply registers, and confirm the thermostat has fresh batteries.
• Stop and call: the furnace locks out more than twice, you hear the igniter cycle without a steady flame, water is pooling around the base, or there is a clicking relay with no burner light-off.
• Licensed work only: flame sensor service, pressure switch and limit diagnosis, condensate trap and drain clearing inside the cabinet, and any gas valve or control board work.

When is a no-heat call more urgent than usual?

Who lives in the home matters as much as the thermometer. A no-heat problem moves to the top of the list when there is an infant, an elderly or frail person, someone recovering from surgery, anyone on home medical equipment, or a person with a condition made worse by cold. Tell us this when you call. It changes how we prioritize the day, and it tells the technician to bring the parts most likely to get heat back on the first visit.

While you wait, keep everyone in one room, close doors to unused rooms, and dress in layers. Never use a gas range, oven, barbecue or camp heater to heat the house; that is how CO poisonings happen during outages. If the home is getting dangerously cold and someone is vulnerable, a short stay with family or a neighbour is a sensible call. We offer same-day service where we can, and we will tell you honestly on the phone if we cannot reach you today.

What should the written quote say, and how do I know safe heat is restored?

Before any repair begins, you should have a written quote that names the fault the technician found, the part or work that fixes it, and whether the unit passed or failed its safety checks. On an emergency call that matters even more, because a stressed homeowner is easier to rush. BC Wide is an independent contractor licensed by Technical Safety BC (LGA0090068, Class B gas CGA0028029), and we hold a 4.7-star rating from 181 Google reviews; the written quote is how we keep emergency work as clear as scheduled work. Cost varies with the part: an igniter or flame sensor is a smaller job than a control board, inducer motor or gas valve. Ask for the quote in writing and approve it before we start.

A finished repair is not just warm air at the registers. Before we leave, the furnace should be run through full heating cycles, not a single light-off.

• Flame checked for a steady, even burn across every burner.
• Combustion and CO readings taken at the appliance and in the living space.
• Venting inspected for blockage, separation or poor slope, including the outdoor terminations.
• Safety controls confirmed: limit switch, rollout switch and pressure switch operating correctly.
• Temperature rise across the furnace checked against the rating plate range.
• Thermostat call for heat tested from the wall, and the work, readings and any remaining concerns written on the invoice.

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