The entire purpose of having a furnace is to keep your home warm in the winter, particularly when it is extremely cold outside. However, similar to an air conditioner in extreme heat, sometimes, the extremely low temperatures seem to be more than the furnace can handle. Fortunately, when a furnace does not hold up in cold weather, there is usually an identifiable reason why. Learn what might be going on so that you can get to the bottom of the matter.
Poorly Sized Furnace
If you notice an issue with your furnace during bouts of extremely cold weather and you recently remodeled your home, it could be that your old furnace is not sized to accommodate the new addition. Furnace units are designed to heat a certain amount of square footage.
When a home is larger than this threshold, it will feel cool in the house. Contact an HVAC professional to schedule an inspection to see if you need a new unit. It could be that you just need an additional small unit or a new, single large unit.
It is one thing for your furnace to produce warm air, and something entirely different for this heat to be circulated around your home. Every furnace has a fan inside of it whose job is to push this warmed air through the system so that it can travel through the ducts and into each room.
When the fan is not working, the heated air does not circulate, and as a result, the home feels colder. With this issue, it is not always that the cold weather is the root cause of the problem, but the lower temperatures just make it more noticeable.
Clogged Air Filter
Cold weather outside means that your furnace has to work harder to maintain a comfortable temperature inside your home. The harder the furnace must work, the more strain that is put on it. This problem is further compounded when the furnace also has a dirty filter inside of it.
A dirty air filter limits airflow through the furnace and can cause a backflow, which can force the furnace to work harder. The combination of the weather and dirty filter can cause the furnace to completely malfunction.
If you experience any issue related to your furnace, it is best to contact a professional. While the above represent some of the common problems, a professional technician can properly diagnose and repair the issue. For more information about furnace repair, contact a local HVAC contractor.