No Heat? Emergency Furnace Repair Guide for Ontario Winters
What to do when your furnace stops working in Ontario's freezing temperatures - immediate steps and 24/7 emergency service
When your furnace stops working during an Ontario winter, it's more than an inconvenience - it's an emergency. With temperatures regularly dropping below -20°C, a non-functioning furnace can quickly become dangerous. This guide provides immediate steps to take, troubleshooting tips, and information about our 24/7 emergency furnace repair service across Ontario.
Immediate Steps When You Have No Heat
Check Thermostat Settings
Ensure thermostat is set to "Heat" and temperature is set 5° above current room temperature
Verify Power Supply
Check furnace power switch and circuit breaker. Reset if tripped
Inspect Filter
Dirty filters can cause shutdown. Replace if clogged
Check Gas Supply
Ensure gas valve is open. Check other gas appliances
If you smell gas, hear hissing sounds, or your carbon monoxide detector is alarming:
• EVACUATE immediately and call 911 from outside
• Do not operate light switches or electrical devices
• Do not attempt to relight pilot lights if you smell gas
• Wait for emergency services to declare the area safe
Common No-Heat Issues & Solutions
🔥 Furnace Not Igniting
Symptoms: No heat, blower runs but no warm air
Possible Causes: Ignition failure, gas valve issue, flame sensor
DIY Check: Ensure gas is on, check pilot light (if applicable)
Professional Needed: Yes - gas and ignition issues require certified technician
💨 Blower Not Working
Symptoms: No air circulation, furnace may overheat and shut down
Possible Causes: Blower motor failure, capacitor issues, control board
DIY Check: Check thermostat fan setting, circuit breaker
Professional Needed: Yes - electrical components require expertise
🔄 Frequent Cycling On/Off
Symptoms: Furnace starts then stops repeatedly
Possible Causes: Overheating, flame sensor, limit switch issues
DIY Check: Check air filter, ensure vents are not blocked
Professional Needed: URGENT - can indicate serious safety issues
When to Call for Emergency Service
| Situation | Urgency Level | Action Required |
|---|---|---|
| Indoor Temp Below 15°C | Emergency | Dangerous for children, elderly, or those with health conditions |
| No Heat for 2+ Hours | Emergency | In freezing temperatures, pipes can start freezing within hours |
| Outdoor Temp Below -10°C | Emergency | Emergency response needed to prevent frozen pipes and damage |
| Vulnerable Household Members | Emergency | Infants, elderly, or those with medical conditions need immediate heat |
Emergency Response Times
| Emergency Type | Response Time | Availability |
|---|---|---|
| Priority Emergency (indoor temp below 15°C) | 1-2 Hours | After-hours and weekend service |
| Standard Emergency (indoor temp above 15°C) | 2-4 Hours | Same-day service guaranteed |
| Non-Emergency (heat working but issues present) | 24-48 Hours | Next available appointment |
What to Expect During Emergency Service
Phone Assessment
We'll ask key questions to prepare the right parts and equipment
ETA Provided
You'll receive a confirmed arrival window
Diagnosis
Technician will identify the issue and provide repair options
Approval
We explain costs and get your approval before any work
Repair
Certified technician performs the necessary repairs
Testing
System is tested and safety checks performed
Documentation
You receive detailed invoice and warranty information
What Ontario Homeowners Say About Our 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."
— Knap B. London ON · December 2025
"Our carbon monoxide detector went off at 3am. We evacuated and called 911. After they cleared the house, we called Hawana. Abdullah arrived within an hour and found a cracked heat exchanger—a serious safety hazard. He shut down the furnace and installed a new high-efficiency Goodman the next day. Could have saved our lives. Forever grateful for their fast emergency response."
— Hurst B. London ON · January 2025
"Called Hawana on a Sunday morning with no heat. Abdullah walked me through troubleshooting over the phone—checked the filter (dirty), replaced it, and the furnace started working again. Saved me an emergency call fee because he was honest enough to tell me it was a simple fix. When I needed a full furnace replacement a year later, I didn't call anyone else. Honest, knowledgeable, and truly cares about customers."
— Wend T. 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
First, check your thermostat settings - ensure it's set to 'Heat' and temperature is 5° above room temperature. Then verify power supply - check the furnace power switch and circuit breaker. Finally, inspect your air filter - a dirty filter can cause shutdown. If these don't restore heat, call a professional immediately. Don't wait in freezing temperatures. A few minutes of troubleshooting can save you an emergency call if the issue is simple like a dead thermostat battery.
Call for emergency repair if indoor temperature drops below 15°C (dangerous for children, elderly, or those with health conditions), if you've had no heat for 2+ hours in freezing temperatures, if outdoor temperature is below -10°C, or if you have vulnerable household members. Don't wait - frozen pipes can cause extensive damage quickly. A burst pipe can flood your home and cause $10,000+ in damage. Call immediately.
For priority emergencies (no heat with indoor temp below 15°C), we respond within 1-2 hours, including after-hours and weekends. For standard emergencies (no heat with indoor temp above 15°C), we respond within 2-4 hours with same-day service guaranteed. We prioritize no-heat emergencies during winter months based on temperature urgency and household vulnerability. Call us immediately for fastest response.
Dangerous signs include gas smell or hissing sounds (evacuate immediately and call 911), carbon monoxide detector alarms (life-threatening emergency), yellow or flickering burner flame (should be blue), loud banging or grinding noises, visible water leaks around furnace, and frequent cycling with no heat. If you notice any of these, call for emergency service immediately. Don't wait - these can indicate serious safety hazards like gas leaks or carbon monoxide.
To prevent frozen pipes while waiting for repair: let faucets drip slightly to keep water moving, open cabinet doors under sinks to allow warm air circulation, keep interior doors open to distribute any remaining heat, use space heaters safely in critical areas (never unattended), and if temperatures are extremely cold, consider shutting off the main water supply and draining pipes. Focus on pipes in exterior walls, basements, and crawl spaces first.
Emergency furnace repair diagnostic fee typically $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. We provide upfront pricing before starting any work, so you know the cost before we begin.
Yes. A dirty air filter is the #1 cause of furnace problems. It restricts airflow, causing the furnace to overheat and shut down as a safety measure. This can result in complete no-heat situations. If your furnace isn't working, check the filter first. Replace it if dirty - this solves many no-heat calls. Change filters every 1-3 months during winter to prevent emergencies. Write the date on your filter when you install it.
Yes. We offer 24/7 emergency furnace repair across Ontario including rural areas within 50km of London. For locations beyond 50km, call us to discuss availability. Our technicians travel the 401/402 corridor daily and respond quickly to emergency calls throughout the region. No travel surcharges for standard service calls within our service area. We serve all of Southwestern Ontario including St. Thomas, Woodstock, Ingersoll, Strathroy, and surrounding communities.
If your CO detector alarms, evacuate everyone immediately including pets. Do not open windows or try to ventilate—this can interfere with emergency responders' readings. Call 911 from outside your home. Do not re-enter until emergency services say it's safe. After the incident, have your furnace professionally inspected before using it again. CO poisoning is life-threatening - take it seriously. Symptoms include headache, dizziness, nausea, and confusion. If you feel any of these, seek fresh air immediately.
Preventative measures include annual professional tune-ups before winter (schedule in September-October), monthly filter changes during heating season, keeping vents clear of snow and ice, testing carbon monoxide detectors monthly, addressing minor issues promptly before they become emergencies, and signing up for a maintenance plan. Regular maintenance prevents 80% of winter breakdowns. Our maintenance plans start at $149/year and include priority emergency service.
Need Emergency Furnace Repair Right Now?
Don't risk frozen pipes or dangerous temperatures. Call our 24/7 emergency line for immediate furnace repair across Ontario.
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