www.risleyhomeinspections.com Other Helpful Tips: -Make sure your heating system is prepared: It is always a good idea to have a licensed HVAC technician to properly service and maintenance your HVAC unit at least once a year. You want to make sure it is ready to operate normally and efficiently to avoid any issues in the colder months. And always make sure to regularly change your air return filter for efficient operation and avoid your coil from getting gunked up or blocked