One important goal of any forced-air heating or cooling system is a proper balance of airflow, both into rooms and back to the furnace or A/C air handler. Air balancing, simply speaking, is making sure that all forced-air vents in the house are putting out air equally. There are some do-it-yourself methods to test the air balance in your home. Try walking between rooms to see if the temperature changes. Place your hand near the ceiling to check for air flow from the vents. If the air isn’t balanced, you may need have a trusted technician install restrictors or dampeners, although the problem may be solved by adjusting or unblocking registers, replacing your HVAC’s air filter, or checking for and fixing ductwork problems, such as leaks or blockages.