How to Properly Remove Vent Blockages
If you become aware of a furnace problem that might involve the exterior vent, do a quick inspection and see if any snow, ice or some common household item might be blocking the vent.
If so, before removing the obstruction, head inside first and turn the off the power to your furnace. Now, you can safely clear away whatever is blocking your exterior vent. Once you’re done, turn your furnace back on using either the breaker or the switch.
A lack of airflow through the furnace’s interior vents could mean your furnace fan motor has seized. If this has happened, don’t try to fix the problem yourself – call the expert furnace repair technicians at Holmes Heating and Air Conditioning.