Have you turned up the thermostat to heat your home or commercial space only to be met by a blast of cold air instead of warm? There are seven possible reasons for this malfunction. Keep reading to find out what they are and what you can do about them.
C - Clogged Air Filter: Over time, dust, debris, and pet dander accumulate in your furnace’s filter. This affects air quality and furnace efficiency. A simple DIY fix is to clean or change your filter.
O - Overheated Furnace: If your furnace overheated, it may have shut off the burners while the blower continues running. This could be due to clogged filters or more serious issues like faulty components or a malfunctioning limit switch. These issues are best tended to by a furnace replacement and repair company.
L - Low Gas Supply: No gas supply means no heat production. Ensure all gas valves leading to the furnace are open. If the issue persists, contact your gas company or a furnace repair service. Poorly functioning gas lines can be dangerous, so don't delay seeking assistance. Many HVAC companies in Calgary and elsewhere offer 24/7 emergency services to ensure not only your comfort but your safety too.
D - Damaged Ductwork: Leaks or poor insulation in ducts can allow heated air to escape before reaching the vents. While you may spot some issues, an HVAC professional is better equipped to identify and repair damaged ductwork. Any repair charges will be offset by savings on your heating bill and improved comfort and energy efficiency.
A - Auto Setting Incorrectly Set: If your furnace is blowing cold air most of the day, check the thermostat fan setting. It should be set to "AUTO" not to "ON," as this causes the blower to run continuously, even when the furnace isn't heating. The “AUTO” setting causes the fan to run only when the furnace producing warm air.
I - Ignition Issues: A pilot light being out or ignition failure can prevent proper heating. In older furnaces, drafts or clogs may extinguish the flame. Modern furnaces may have issues with electronic flame sensors or ignitors. If you feel comfortable with your furnace, you can relight your pilot light, otherwise, call a professional furnace repair technician. You can also ask them for a furnace inspection and maintenance while they are there. If an electronic issue is at the root of your problem, it is best to call your HVAC company to request a technician.
R - Regulator Problems: Issues with gas valves or regulators can hinder gas flow to the furnace, preventing it from generating heat. This cold air issue is best handled by a professional furnace replacement and repair company, as the improper handling of gas components can be hazardous.
Get Professional Furnace Repair in Calgary
If your efforts to troubleshoot your furnace problems still leave you in the cold, call the HVAC specialists at Harmony Heating & Air Conditioning Inc. We offer 24/7 emergency furnace repair as well as regular furnace maintenance services that include furnace cleaning and preventative testing and measuring to help prevent furnace failure during the next cold spell. Call us today in Calgary – we offer commercial and residential HVAC repair and furnace replacement done right.