Boiler Emergency Checklist for Greater Vancouver Homeowners
When your boiler fails, knowing what to do can make the difference between a minor inconvenience and a major emergency. This checklist helps Greater Vancouver homeowners respond safely and effectively to common boiler emergencies, including no-heat situations, gas odours, water leaks, and carbon monoxide concerns. Keep this guide accessible for when you need it most.
Gas Odour or Suspected Gas Leak
If you smell gas (rotten egg or sulphur odour) near your boiler: evacuate everyone from the building immediately. Do not operate any electrical switches — lights, appliances, or phones — as sparks can ignite gas. Do not light matches or use lighters. Once outside at a safe distance, call FortisBC at 1-800-663-9911 or 911. Do not re-enter the building until emergency services have cleared it. After the gas emergency is resolved, call us for boiler inspection and repair.
Carbon Monoxide Alarm Activation
If your carbon monoxide detector alarms: evacuate everyone from the building immediately. Call 911 from outside. Do not ignore a CO alarm — carbon monoxide is colourless, odourless, and can be fatal. Leave doors open behind you to ventilate. Once emergency services have cleared the building, have your boiler and all fuel-burning appliances inspected by a licensed professional before using them again. Install CO detectors on every level of your home if you do not have them.
No Heat During Cold Weather
If your boiler stops producing heat: check the thermostat is set to heat mode above room temperature. Verify the boiler has power and the gas shut-off valve is open. Check the boiler pressure gauge — if below 12 psi, repressurize using the fill valve. Note any error codes on the display. If heat does not restore, call for emergency service. While waiting, close curtains, wear warm layers, and consolidate to one room. If indoor temperatures drop near freezing, shut off the main water supply to prevent frozen pipes.
Water Leak from Boiler
If you discover a water leak from your boiler: place buckets under the leak to catch water. Move valuables, furniture, and electronics away from the affected area. If the leak is significant, shut off the water supply to the boiler using the isolation valve on the water feed line. For leaks that are spraying steadily, shut off the boiler's power and gas supply as well. Document the leak location with photos for insurance. Call for professional repair.
Frozen Condensate Pipe
If your condensing boiler has a frozen condensate pipe (common in freezing weather): the boiler will likely shut down and display an error code. Try thawing the exposed portion of the condensate pipe using a hot water bottle, warm cloth, or gentle heat from a hairdryer on low setting. Do not use boiling water or open flame. Once thawed, reset the boiler. Consider insulating the condensate pipe to prevent future freezing. If the pipe is inaccessible or the issue recurs, call for professional assistance.
Boiler Making Unusual Noises
Different boiler noises indicate different problems. Banging or rumbling (kettling) suggests scale buildup on the heat exchanger. Gurgling indicates trapped air — bleed your radiators. Whistling may mean a partially closed valve or circulation issue. A loud bang at ignition is a safety concern requiring immediate professional attention. If any noise is accompanied by other symptoms like no heat or leaks, call for service. If unsure, it is always better to have a technician evaluate unusual boiler sounds.
Safety Reminder
If you smell gas, suspect carbon monoxide or believe there is an immediate danger, leave the property and contact emergency services or the appropriate gas emergency authority. Do not remain inside — exit the building immediately and call for help from outside.