When the occasional polar vortex descends in and around Chicagoland, it's important to make sure your furnace is in top notch condition. After January's frigid temperatures, with some days recording wind chill levels close to fifty degrees below zero, a furnace that is blowing cold air during a repeat cold snap could create Siberian conditions inside your home.
The first thing to check is your thermostat. Make sure your system is set to "auto", which will help maintain a constant temperature inside the home; if you have it set to "on", then the fan will blow air all the time. If the temperature has already reached your desired setting, the system won't continue to blow more warm air; it will blow tepid or cool air.
Another reason your furnace might be blowing cold air is that the air filter may have become so clogged that it's reducing or impeding the airflow into the heating equipment. This situation can cause the equipment to overheat, causing the furnace to automatically shut down the heating function as a matter of safety. Filters should be replaced every 90 days.
A duct system with leaks or connection problems could let warm air escape before it reaches the interior rooms of your home. This would make the air through the registers feel colder, and would also increase your heating bill significantly, as the equipment would have to work harder to keep the home warm when it's cold outside, and especially when the temperatures are below freezing.
There are other situations that could cause your heating system to send cold air into your home. It's best to leave this diagnosis and repair to the professionals; if your furnace is blowing cold air, call Golden Seal Service Experts. They'll send a professional technician to your home to diagnose and correct the problem as soon as possible. For more information, please contact:
Golden Seal Service Experts
1730 Wallace Avenue, Unit B
St. Charles, IL 60174