Common Furnace Issues in Coquitlam and How to Address Them

Your furnace plays a crucial role in keeping your home warm and comfortable during the colder months. However, like any mechanical system, it can encounter issues that require attention. Understanding these common furnace problems can help you identify when your system needs repair, ensuring you address the issue before it becomes a bigger, more expensive problem.  We’ll explore some common furnace issues, their causes, and what you can do to resolve them.

Furnace Blowing Cold Air

One of the most frustrating issues homeowners face is a furnace that blows cold air instead of warm. This problem can leave your home chilly and uncomfortable, especially during the winter months.

Causes

• Thermostat Issues: If your thermostat is set to “on” rather than “auto,” the blower may continue to run even when the furnace isn’t heating, causing it to blow cold air.
• Pilot Light Out: In older furnaces, the pilot light may go out, preventing the furnace from producing heat.
• Dirty Air Filter: A clogged air filter can restrict airflow, causing the furnace to overheat and shut down the burners, leaving only the fan running with cold air.

Solution

• Check the Thermostat: Ensure your thermostat is set to “auto” to allow the furnace to cycle properly.
• Relight the Pilot Light: If the pilot light is out, follow the manufacturer’s instructions to relight it. If it won’t stay lit, there may be a problem with the thermocouple, which will require professional repair.
• Replace the Air Filter: Check and replace your air filter regularly to ensure proper airflow and prevent overheating.

 Furnace Not Turning On

A furnace that won’t turn on is a serious issue, especially in the middle of winter. There are several potential causes for this problem, ranging from simple fixes to more complex issues.

Causes:

• Thermostat Malfunction: A faulty thermostat may not send the signal to the furnace to turn on.
• Tripped Circuit Breaker: If the circuit breaker that controls your furnace has tripped, the furnace won’t receive power to start.
• Blower Motor Issues: If the blower motor is faulty or has failed, the furnace may not be able to circulate air through your home.

Solution:

• Check the Thermostat: Make sure your thermostat is set to the correct temperature and mode. If it’s unresponsive, it may need to be replaced.
• Reset the Circuit Breaker: Check your electrical panel and reset any tripped breakers. If the furnace continues to trip the breaker, it’s time to call a professional.
• Call a Professional: If the blower motor is the issue, it’s best to have a certified heating professional inspect and repair or replace the motor.

Furnace Cycling On and Off Frequently

If your furnace is constantly turning on and off (a process known as short cycling), it’s not only inefficient but also puts extra strain on the system, potentially leading to more significant issues down the line.

Causes:

• Overheating: If the furnace overheats, it may shut down as a safety measure, then restart when it cools down, leading to short cycling.
• Thermostat Placement: A thermostat located too close to a heat source or in a drafty area may cause the furnace to cycle more frequently.
• Airflow Issues: Restricted airflow due to a dirty filter or blocked vents can cause the furnace to overheat and short cycle.

Solution:

• Replace the Air Filter: Ensure your air filter is clean and replaced regularly to maintain proper airflow.
• Relocate the Thermostat: If your thermostat is in an unsuitable location, consider moving it to a more central area in the home.
• Call a Professional: If short cycling continues, a technician can diagnose and resolve issues related to overheating or other mechanical problems.

Noisy Furnace Operation

It’s not uncommon for furnaces to make some noise during operation, but loud, unusual sounds like banging, rattling, or squealing can indicate underlying issues.

Causes:

• Loose or Damaged Components: Over time, components like the blower motor, belts, or fan blades can become loose or damaged, causing noise.
• Ignition Issues: If the burner or pilot light has trouble igniting, it can cause a loud bang or pop.
• Air Duct Issues: Loose or uninsulated air ducts can rattle or make noise when the furnace is running.

Solution:

• Tighten Loose Parts: Check for any loose screws or bolts and tighten them to reduce noise.
• Inspect the Ignition System: If you hear loud bangs or pops, have a technician inspect the ignition system and burners for issues.
• Call a Professional: For persistent or loud noises, it’s best to have a technician diagnose and repair the furnace to prevent further damage.

Furnace Not Producing Enough Heat

If your furnace is running but not producing enough heat to keep your home comfortable, it’s likely a sign of an issue that needs attention.

Causes:

• Clogged Air Filter: A dirty air filter can restrict airflow and reduce the furnace’s ability to produce and distribute heat effectively.
• Thermostat Problems: If the thermostat isn’t calibrated correctly or is malfunctioning, it may not signal the furnace to produce sufficient heat.
• Ductwork Leaks: Leaks or blockages in the ductwork can cause warm air to escape before it reaches your living spaces.

Solution:

• Replace the Air Filter: Regularly check and replace your air filter to ensure proper airflow and heating efficiency.
• Check the Thermostat: Ensure your thermostat is set correctly and functioning properly. If it’s old or malfunctioning, consider replacing it.
• Inspect Ductwork: Have a professional inspect your ductwork for leaks or blockages and repair any issues to improve heat distribution.

Furnace issues can range from minor annoyances to serious problems that require immediate attention. Understanding these common issues and their causes can help you take action before they escalate, ensuring your furnace operates efficiently and reliably throughout the winter. However, many furnace problems require professional expertise to diagnose and repair safely.

At Hippo Plumbing and Heating, our experienced technicians are equipped to handle all types of furnace repairs, ensuring your home stays warm and comfortable. If you’re experiencing any furnace issues, don’t wait—contact us today for expert service and reliable solutions. Keep your home cozy and your furnace running smoothly with our professional furnace repair services.