Clean the fan blades and coils prior to summertime. Always make sure you shut off the power before you do any work on the unit other than superficial cleaning. In addition, always remove all debris such as leaves from the outside condenser unit.
Be sure to clean the fan blades and coils of the condenser fan. Start by turning off the power to avoid having anything move when you work on it. Secondly, pop the grill off, take the blades off and clean them as well as the actual unit.
Keep your outdoor units free of debris when you are mowing the lawn. When you work with your lawn mower, make sure it spits the grass to the side opposite of your unit. The same goes for when you blow leaves, so make sure your are careful when moving any debris in the vicinity of your HVAC devices.
Leaves falling from trees can wreak havoc with your HVAC unit. Clean outdoor units often to remove leaves. The fan should have a clear path for air to come in. If it is blocked, your system will suffer.
You can boost the efficiency of your HVAC unit by replacing it with a new energy efficient one or moving your old one to a shady outside location. If the air your machine draws in is already cooler, it will require less energy to regulate before it's filtered into your home.
This article has proven that some helpful advice is all that is needed to understand an HVAC system. It is always a good idea to learn all you can about a topic. Use all the guidelines that have been provided as you get to work.