Dossier
AC filters
Coverage of AC filters in the Nexus archive.
- Air conditioning 101: An area expert on how it works and how to make your AC more efficient
Air conditioning systems work by removing heat from indoor air using a refrigerant loop, transferring heat outdoors. Carlo De Jesus, an HVAC instructor, advises using cheaper air filters to maintain airflow efficiency and clarifies that lowering the thermostat excessively does not speed up cooling.