Winter in Quebec is demanding on every home comfort system. In Montreal and Laval, where temperatures regularly drop below freezing, one common yet often misunderstood problem is frozen HVAC coils. Whether in a heat pump, furnace system, or central air conditioning unit running in reverse mode, frozen coils can seriously affect performance, efficiency, and comfort.
At Electro Pompe Air Conditioning & Heating, we frequently respond to emergency HVAC repair calls caused by this issue. Understanding how frozen coils develop and how to prevent them can help protect your system and your budget.
What Are HVAC Coils and Why Do They Freeze?
HVAC coils are responsible for transferring heat. In winter, heat pumps and furnaces rely on coils to absorb or release heat efficiently. When airflow is restricted or moisture builds up, the temperature of the coil can drop below freezing. Moisture in the air then turns into ice, forming a solid layer over the coil.
Common causes include:
Dirty air filters blocking airflow
Low refrigerant levels
Faulty thermostats or sensors
Poor insulation around ductwork
Extended operation during extreme cold
When ice forms, the coil can no longer transfer heat properly, forcing your system to work harder.
How Frozen Coils Impact HVAC Performance
Frozen coils are not just a minor inconvenience. They can significantly reduce system efficiency and lead to costly repairs.
Key performance issues include:
Reduced heating output, leaving rooms cold
Higher energy consumption as the system struggles
Increased wear on compressors and blowers
Potential system shutdowns or safety lockouts
Risk of long-term component damage
If ignored, a frozen coil can shorten the life of your furnace or heat pump and increase your winter utility bills.
Warning Signs Homeowners Should Watch For
Many homeowners in Montreal and Laval only realize there is a problem when the system stops working entirely. Look for these early signs:
Weak airflow from vents
Unusual hissing or buzzing sounds
Ice buildup on indoor or outdoor units
Rising energy bills without explanation
Uneven heating throughout the home
If you notice any of these, it is important to act quickly.
How Electro Pompe Restores System Efficiency
Our certified technicians specialize in diagnosing and repairing frozen coil issues across Montreal and Laval. We provide:
Furnace diagnostics, tune-ups, maintenance, and repairs
Heat pump installation and servicing
Central air conditioning installation, maintenance, and repair
Emergency HVAC repair and troubleshooting
Residential energy-efficient comfort solutions
System performance testing and free estimates
By carefully inspecting airflow, refrigerant levels, and electrical components, we identify the root cause and restore safe, efficient operation.
You can learn more about our services at www.electro-pompe.com.
Cost-Saving Tips to Prevent Frozen Coils
Preventive care is the most effective way to avoid frozen coils and unexpected breakdowns.
Homeowner tips:
Replace air filters every 1 to 3 months
Keep vents and returns unobstructed
Schedule annual system maintenance
Ensure proper insulation around ducts
Monitor thermostat settings during cold snaps
Routine maintenance helps improve energy efficiency, extend system lifespan, and reduce emergency repair costs.
Seasonal Preparation for Quebec Winters
Before winter arrives, your HVAC system should be professionally inspected. A preseason tune-up ensures that coils, blowers, and refrigerant systems are operating correctly. This simple step can prevent ice buildup and maintain consistent indoor comfort throughout the coldest months.
Electro Pompe offers system performance testing and free estimates, giving homeowners confidence that their system is ready for winter.
When to Call for Emergency Service
If your system stops producing heat or shows visible ice, do not attempt to run it continuously. Turn it off and contact a professional immediately. Our team provides fast, reliable emergency HVAC repair and troubleshooting for both residential and light commercial systems.
You can schedule service directly using this link: https://bit.ly/4qsegB4
Trust a Local HVAC Expert
With years of experience serving Montreal and Laval, Electro Pompe Air Conditioning & Heating is committed to keeping homes safe, warm, and energy-efficient. From minor repairs to complete system replacements, we deliver dependable solutions designed for Quebec’s climate.
Address: 4077 Bd Sainte-Rose, Laval, QC H7R 1W6
Phone: (450) 328-1110
Your comfort is our mission call today for a free estimate or to schedule a service appointment.