The answer to 'why is my air filter blowing hot air' is that your air filter may be blocked or clogged, preventing proper airflow through the system. This can cause the air being pushed through the filter to feel hotter than normal.
Some common causes include a dirty or clogged air filter, a malfunctioning blower motor, or issues with the ductwork. It's important to check and replace your air filter regularly to maintain proper airflow and system efficiency.