The answer to 'why is my air filter not cooling' is that a clogged or dirty air filter is likely the cause. A dirty air filter restricts airflow through your HVAC system, preventing it from cooling your home effectively. This can lead to reduced cooling performance, higher energy bills, and potentially damage to your HVAC equipment.
Some common symptoms of a clogged air filter include warm air coming from the vents, the system running for longer periods without reaching the desired temperature, and your energy bills increasing. The solution is to regularly replace or clean your air filter according to the manufacturer's recommendations, typically every 1-3 months. If the problem persists after changing the filter, it's best to call a professional HVAC technician to diagnose and address any underlying issues with your cooling system.