Is Your Furnace Blowing Cold Air?
At JOB Heating & Air Conditioning, Saskatoon we are eager to provide the best possible customer experience, our aim is to be a professional resource for our clients before, during and after the sale! Our team takes pride in our service knowledge in regards to modern industry equipment and training. We are recognized by peers and offer sales, service, training & installations for residential, and commercial Heating, Cooling and Plumbing systems in Saskatoon and area. In our latest article, we discuss reasons why your furnace is blowing cold air.
Is your furnace blowing cold air? This may be a sign that your furnace requires attention. Read on to discover reasons why your furnace is blowing cold air.
Your Furnace Has Not Warmed Up
Whenever it is the beginning of a heating cycle, you will get a blast of cold air when you turn on your furnace. Much like when you first turn on a faucet, cold water is going to flow out at first rather than hot. As your furnace warms up, it must first push out the cold air before warm air will blow out of your vents. If your furnace blows cold air briefly, this is likely the explanation. However, if warm air does not follow the cold air after a few minutes, it is time to call in an expert.
The Thermostat Setting Is Incorrect
Ensure the thermostat is set to “AUTO” instead of “ON”. When the thermostat is set to “ON”, the fan will continuously run even when the furnace is not in a heating cycle. This means that the fan will blow cold air throughout your home, instead of warm. The thermostat should always be on “AUTO” to ensure that the fan will only blow during a heating cycle.
The Flame Sensor Is Dirty
The flame sensor detects whether or not your furnace’s gas burners are lit. A dirty flame sensor will keep the gas burner from staying lit, and cause the burners to shut off. This results in cold air blowing from the vents, as the furnace does not have a heat source. Unless you are familiar with furnaces, a dirty flame sensor should always be cleaned by a professional to restore heat.
Your Furnace’s Pilot Light Is Out
Especially if your furnace is older, cold air is a sign that the pilot light is out. If you are comfortable doing so, follow your furnace’s instructions on how to relight it. If the flame goes out again after a few minutes, contact a professional as technical work is likely necessary.
Your Furance’s Air Filter Is Clogged 
When the air filter is clogged, airflow is restricted. Restricted air flow can cause your furnace to overheat. When your furnace overheats, this shuts down the burner resulting in cold air. Always replace a dirty air filter to ensure your furnace is functioning properly.
These are a few possible reasons why your furnace is blowing cold air. Be sure to schedule your routine furnace maintenance to ensure your furnace is safe to operate this winter. If you need any assistance with your furnace or home heating equipment, do not hesitate to contact our team at JOB Heating & Air Conditioning.
JOB Heating & Air Conditioning is a Trusted Saskatoon plumbing company. We show up on time, deliver on budget and we leave the work area cleaner than when we arrived! At JOB we take pride in our plumbing services in this city and surrounding area, so nothing means more to us than testimonials from our clients as their preferred plumber in Saskatoon.
JOB products and services:
‘Your Comfort is Our Concern!’
JOB Heating & Air Conditioning are Trusted Saskatoon Furnace and Air Conditioning Experts
