The number one cause of air condioner problems is compressor failure. When this happens, a professional needs to contacted to replace the compressor. However, many other air conditioner problems are a little simpler and easier to troubleshoot.
But a dirty filter can make the unit behave like there is a compressor problem. When the filter is dirty and air flow into (and our of) the unit is severly limited, in most air conditioners the compressor will not turn on. This is because there is insufficient circulation for proper efficient operation. And …

Need 5 really quick, inexpensive (or free) ways to save money on your electric bill this spring?

Replace at least 40% of your commonly used lights with compact fluorescents.
Always turn off the lights when you leave a room.
Keep the refrigerator door closed, and unplug that second fridge.
Unplug appliances that aren’t used often.
Watch computer usage carefully and reduce if necessary.

Keep in mind that every single thing that gets plugged in uses energy. In fact, many use energy even when they are not “turned on”. For example, VCRs and many electronics such as TVs and cable boxes still use energy even though they are turned off. Additionally, computers in “power save” mode are still using power, albeit a lower amount
So how much electricity do common appliances use? Let’s find out:

Ceiling fan: 60 watts
Furnace fan: 400 watts
Heat pump: 5000 watts
Central AC: 6000 watts
Window AC 1300 watts
Fluorescent lamp: 20 watts
Flood light: 150 …