When a polar vortex grips Pennsylvania, your furnace is pushed to its limits. These extreme cold events don’t just make homes uncomfortable—they expose weaknesses in heating systems that may otherwise seem to work fine. If your furnace is struggling or shuts down entirely during severe cold, there’s usually more going on than a simple temperature drop.
Below, we answer common questions homeowners ask when furnaces begin struggling—or fail—during a Pennsylvania polar vortex.


