What happens if duct is too big?

Oversized ducts could cause your HVAC system to work too hard and limit the amount of conditioned air that reaches your home. Forcing your system to work harder than it should leaves it prone to breakdowns and increases your energy usage.

vicsairconditioning.com - The Importance of Proper Duct Sizing - Vic's Air Conditioning

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Your Thousand Palms, CA home’s HVAC system includes various vital components that help it run effectively. One of the most important and most overlooked components is the duct system, which is responsible for distributing the conditioned air to every room of your home. If your ducts are improperly sized or don’t fit your system, you could end up with home discomfort and high energy bills, not to mention the wear on your system.

Oversized Ducts

Larger than normal ducts are certainly capable of handling more airflow. But your HVAC system may not be equipped to pump that much air. In fact, your system needs a specific air pressure in the ductwork to properly distribute air. Oversized ducts could cause your HVAC system to work too hard and limit the amount of conditioned air that reaches your home. Forcing your system to work harder than it should leaves it prone to breakdowns and increases your energy usage.

Undersized Ducts

If your ducts are too small to accommodate the air flowing through them, the pressure increases and backs up in the system. This causes resistance for the blower fan, reducing your HVAC system’s efficiency and longevity. Over time, this can lead to significant stress on the components and can inevitably lead to a breakdown.

Duct Sizing Method

The Manual D Sizing Method is the industry standard that was developed by the Air Conditioning Contractors of America. This method involves evaluating the individual rooms in your home to determine optimal airflow, control excessive noise, seal ductwork, provide insulation, and retrofit the design as needed. This all works to correct pressure imbalances and ensure your system runs as efficiently as possible to supply each room of your home with adequate, conditioned airflow. If you’re concerned about the sizing of the ductwork for your HVAC system, Vic’s Air Conditioning Service can help. Call us at 760-289-5998 today to discuss your home’s energy and comfort needs and to optimize your HVAC system.

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