Static pressure is the blood pressure of your HVAC system. Our bodies circulate blood through our veins and arteries. HVAC systems circulate air in much the same way through the duct system. If there is a blockage in the duct system, the static pressure increases, signaling a problem just like high blood pressure does in our bodies. Once we determine high static pressure, we have other tests that follow to isolate and correct the problem. If static pressure is either too high or low, your system is not able to deliver the air required to properly heat and cool your home. It will also indicate problems that can drastically increase your energy costs.