Furnace short cycling after restricted airflow in older duct systems
Why it happens here
A dirty filter, closed vents, or narrow duct transitions can limit airflow in older Lincoln Park buildings. The furnace may overheat and shut down before the rooms reach the thermostat setting. Renovations can make the restriction harder to spot if the duct route is partly concealed.
Our approach
We inspect the filter, blower, and accessible duct connections, then check temperature rise and system response. We explain whether the issue is a maintenance item, an airflow repair, or a control problem. The furnace is run again after correction to confirm stable cycling.