Does air conditioning heat as well as cool? This depends on the particular unit you have installed in your home. If your AC is also designed to work as a heat pump, then you can use your existing unit to heat your space too. If you've got an HVAC system, this also indicates that your aircon has a heating ability.

An air conditioner cools your home with a cold indoor coil called the evaporator. The condenser, a hot outdoor coil, releases the collected heat outside. The evaporator and condenser coils are serpentine tubing surrounded by aluminum fins.

What Does AC Stand For? AC stands for air conditioning. When technicians say they are repairing your AC, they are not going to clean out your vents or change the filter on your furnace. They are simply going to fix your air conditioning unit, whether that is a window unit or a central air system.