Changing a furnace filter regularly will improve your heating in the winter and your air conditioning in the summer.

The EL297V gas furnace, recognized for its innovative design ... performance while ensuring quiet operation and balanced airflow throughout the home. Advanced built-in controls in the unit ...

That reduces the workload on your furnace, and spreading heat around can improve overall comfort within the home. Good airflow makes a huge difference, so make sure that air vents are all clear ...