Essentially, home automation involves an electronic means to program or remotely control these systems. Automating your HVAC system, for example, could involve installing a programmable thermostat so you can set the heat to automatically go down when you are not home or are sleeping then go up just before you wake up or you arrive home from work.

Advanced versions of HVAC automation allow you to control your thermostat via the Internet.

Lighting can be automated by installing sensors to turn the lights on when you enter a room, and turn them off when you leave. Light sensing systems can automatically dim the lights when the incoming sunlight gets brighter.

Appliances can be automated to run during times when electricity rates are lower.

Home automation is a key component of the national Smart Grid initiative. Smart Grid would essentially make remote operation of home appliances, lighting and HVAC possible for everyone. The potential energy savings are huge.