Your planning the perfect arrangement of your furniture in each room of your house. You know you don’t want to cover the heat register or that room could be cold, but what about the other vent in the room? Blocking the cold air return is the easiest way to weaken your heating and cooling system.
What is it?
Cold air returns do exactly what they are named, they provide air back into your heating systems. When they are blocked it reduces the airflow to your blower. If you block this it doesn’t slow your fan it creates positive air pressure. This means that instead of pulling air easily back into your system, your furnace fan will pull air in through cracks and holes in your ducting, house, windows and doors.
Why is this a problem?
Anytime air flow is restricted it causes premature problems.When heating your home improper air flow can cause the heat exchanger inside the blower compartment to store to much heat. Over time this will cause a crack. When the cracks become too big, carbon monoxide can leak into your home. Not only is this extremely dangerous to your health, but you will also need to replace your heating systems. Any cracks need to be addressed immediately.
When running your air conditioning, limited air flow can cause the evaporator coil to keep refrigerant inside to stay longer than it should. This can cause the coil to freeze over. This will make your air conditioner inefficient. The frozen coil can cause water damage. Also if the system doesn’t turn off in time damage to the outside compressor can cause a very expensive problem.
The cold air returns are an essential part of your heating and cooling system. Checking them from blockage and debris is an important maintenance step that is easy and can save you money.