What is a “Static” Air Pressure Test?
Al’s Plumbing Heating and Air Conditioning performs static air pressure tests and make changes (if required) to ensure your HVAC system has the correct air-flow, and no heated or cooled air ends up in your attic. Ductwork repairs decrease utility bills while increasing comfort level. Call Al’s today for a static-pressure test
Air-Duct leakage, or inability to handle airflow are the reasons why air-flow is higher` coming into the system (from the air-returns) than the air-flow leaving the system (from the ducts). Measuring static pressure tells us how your duct system is performing.
Here’s how a Air Pressure test works:
We take two pressure readings — the air pressure entering the system and the air pressure leaving it. We add the two pressures together for the total pressure. Static pressure testing makes it easier to find duct leakage and invisible system defects. *
If the air-flow coming out of air-ducts is lower than what is coming in from the cold-air returns, the ductwork is leaking and / or ductwork repairs and retrofits are required.
Photos of leaking ductwork
Al’s Tip – Usage of High Efficiency (high Merv) Air Filters :
Using a 1 inch High-Efficiency Air Filter dramatically reduces system air-flow. Why? The higher the MERV rating, the smaller the filter’s pores are. These pores are where air flows through the filter. This can create reduction in airflow the system was no designed to handle, making it operate improperly.
Reducing the air flow in your heating / air conditioning can create excessive demand on the furnace blower and other components in the system. Reduced air-flow can cause the a/c to “freeze up” in summer, resulting in no air-flow through the frozen a/c coil inside the furnace (which results in no air-flow through the system).
This YouTube video shows the reduction in system air-flow by 50% caused by a High-Efficiency 1 inch filter.
When the 1 inch filter is replaced by a 4 inch filter, the reduction in air-flow is only 10%. This is because there is four times as much filter-media for the air to move through, resulting in a minimal reduction in air-flow.
Al’s Plumbing Heating and Air Conditioning can perform static air pressure testing and make changes (if required) to ensure your HVAC system has the maximum air-flow possible, and that no heated or cooled air ends up in your attic. You will see the difference the repairs make in utility bills, comfort level, and system lifespan. Call Al’s today for a static-pressure test.