Emergency Furnace Repair: No Heat, Blowing Cold Air, Loud Noises Fixes in London, ON
Facing furnace not turning on emergency service or blowing cold air? Get 24 hour heating repair near me for no heat, loud banging noises, and more.
In Ontario's chilly winters, furnace emergencies like not turning on or blowing cold air can leave you stressed and cold. Hawana HVAC Solutions addresses high-intent searches for 24 hour emergency heating repair near me, furnace blowing cold air suddenly, repair costs for ignitor replacement, and furnace making loud banging noise when starting. We provide detailed causes, fixes, costs, and prevention for London, ON homes to help you act fast.
Furnace Not Turning On: Emergency Service Causes and Fixes
A furnace not turning on is a top emergency, often from thermostat issues, no power, or dirty flame sensor. In Ontario winters, this can be dangerous—call for 24 hour heating and air conditioning repair near me if unresolved.
- Thermostat Problems: Batteries dead or set wrong; replace and set to heat.
- No Power: Check breaker or fuse; reset if tripped.
- Dirty Flame Sensor: Clean with sandpaper to restore ignition.
- Pilot Light Out: Relight per manual; if persistent, thermocouple fault.
- Gas Supply: Ensure valve open; call utility if low pressure.
Furnace Blowing Cold Air Suddenly: Causes and Quick Fixes
Furnace blowing cold air suddenly is common in winter; causes include dirty filters or clogged lines. Average fix cost $150-$350.
| Cause | Fix | Cost (CAD) |
|---|---|---|
| Dirty Filter | Replace | $50-$100 |
| Thermostat Issue | Reset/Replace | $150-$300 |
| Clogged Condensate | Clear Line | $150-$400 |
Furnace Making Loud Banging Noise When Starting: Scraping, Squealing Causes
Loud noises indicate issues like loose parts; banging from ignition delays, scraping from blower, squealing from belts. Emergency repair costs $200-$600.
- Banging: Delayed ignition; clean burners.
- Scraping: Loose wheel; tighten or replace.
- Squealing: Worn belt; lubricate or replace.
What London Homeowners Say About Emergency Service
"Our furnace stopped working at 11pm on the coldest night of the year. Called Hawana and they had a technician at our London home within 90 minutes. Abdullah diagnosed a failed ignitor, had the part in his truck, and heat was back on by 1am. Zero after-hours surcharge. Saved us from frozen pipes. Best emergency service we've ever experienced."
— Holm B. London ON · December 2025
"Our furnace was making a terrible banging noise every time it started. This guide helped me identify it as delayed ignition. Called Hawana and Abdullah arrived within 2 hours. Found dirty burners causing gas buildup. Cleaned them and adjusted the gas pressure. No more banging and the furnace runs quieter than ever. Great service and potentially life-saving advice."
— Clove T. London ON · January 2025
"Our furnace started blowing cold air. This guide helped me check the filter first—it was completely clogged. Replaced it and the heat came back. Saved me an emergency call. When I needed a full tune-up later, I called Hawana. Great service and honest advice."
— Gorse K. London ON · February 2025
Abdullah Ghzail – Owner & Lead TSSA-Certified HVAC Specialist
"Every winter, my team and I respond to emergency calls from families who wake up to no heat. I've seen frozen pipes, burst water lines, and even CO scares. That's why we answer the phone 24/7 and respond within hours—not days. If your furnace stops working, don't wait. Call us immediately. We'll talk you through safety steps over the phone and be at your door fast. Your family's safety and comfort are our top priorities."
Emergency Furnace FAQ – 2025
If your furnace isn't turning on, first check thermostat settings (ensure it's set to 'Heat' and temperature is above room temperature), check the circuit breaker for tripped switches, and verify the furnace power switch is on. If these don't restore heat, call a professional immediately. We offer 24/7 emergency service with zero after-hours surcharge. Don't wait—frozen pipes can cause extensive damage. Call us at (647) 550-4220.
Hawana HVAC Solutions offers 24/7 emergency furnace repair in London Ontario. Call (647) 550-4220 any time—day or night, weekends and holidays included. We typically respond within 2-4 hours and diagnose most issues the same day. We charge zero after-hours surcharge, so you pay the same rate at 2am as you do at 2pm. Emergency service costs typically range from $150-$600 depending on the issue.
Common causes include a dirty air filter restricting airflow (replace it), thermostat set to 'FAN ON' instead of 'AUTO' (switch to 'AUTO'), or a clogged condensate line in high-efficiency furnaces (clear with wet/dry vac). Fix costs: dirty filter $50-$100, thermostat reset/replacement $150-$300, condensate line clearing $150-$400. A dirty filter is the #1 cause—always check it first before calling for service.
Furnace ignitor replacement typically costs $100-$250 for the part plus labor, with total repair costs averaging $200-$400 in Canada for 2025. Other common repair costs: pilot light repair $150-$300, thermostat replacement $150-$400, flame sensor cleaning $100-$200, blower motor repair $450-$950. We provide upfront pricing before any work begins—no hidden fees. Most ignitor replacements are completed within 1-2 hours.
Emergency furnace repair costs in London Ontario typically range from $150-$600 depending on the issue. Diagnostic fee $89-$149 (often waived if repair proceeds). Common fixes: ignitor $150-$350, flame sensor cleaning $100-$200, blower motor $450-$950, control board $350-$750. We charge zero after-hours surcharge—same price day or night. Most emergency repairs are completed within 2-4 hours of your call. Call us for a free estimate.
Loud banging when your furnace starts indicates delayed ignition—gas builds up before igniting, causing a small explosion. This is a serious safety issue that can damage your heat exchanger and create carbon monoxide risks. Emergency repair costs $200-$600 to clean burners and adjust gas pressure. Turn off your furnace immediately and call a professional. Do not attempt to restart it yourself. This requires urgent attention.
Screeching or squealing noises typically indicate blower motor bearing failure, belt issues (in older furnaces), or motor alignment problems. These sounds often worsen over time and can lead to complete motor failure, reduced airflow, and uneven heating. Repair costs $450-$950 for blower motor replacement. Schedule professional service to diagnose and fix the issue before the motor fails completely. Don't ignore these sounds.
Prevent emergency furnace repairs with annual professional tune-ups ($100-$200), monthly filter changes during heating season, keeping vents clear of obstructions, testing carbon monoxide detectors monthly, and addressing minor issues promptly before they become emergencies. Regular maintenance can prevent 80% of winter breakdowns. Our maintenance plans start at $149/year and include priority emergency service, filter replacement, and 15% off repairs.
If your furnace fan is running but no heat is coming out, common causes include ignition failure (failed ignitor or flame sensor), gas supply problems (closed valve or empty propane tank), or a dirty air filter causing overheating shutoff. Check your filter first—replace if dirty. If the filter is clean and you have gas, call a professional. Ignition issues require certified technicians due to safety risks. Don't attempt DIY repairs on ignition components.
If you smell gas from your furnace, evacuate your home immediately. Do not operate light switches, electrical devices, or phones inside the house. Call 911 or your gas company's emergency line from a safe location outside. Do not re-enter until emergency services declare it safe. A gas smell indicates a potential gas leak, which is a serious safety hazard. Never attempt to troubleshoot gas-related issues yourself. Gas leaks can cause explosions and carbon monoxide poisoning.
Get Emergency Furnace Repair Now
Contact Hawana HVAC Solutions for 24/7 help in London, Ontario. Fast response, transparent pricing, TSSA certified.
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