There are a lot of components that make up the central air conditioning unit, and in order to troubleshoot what is wrong with your air conditioner, you need to understand a wide variety of components that make up the system including refrigeration, electricity, electrical components, electric mechanical controls and AC(air conditioning) components. Since the system can be complex it is probably better to have a trained HVAC specialist look at and diagnose the unit rather than attempt repairs yourself, but you should also be familiar enough with your ac unit so you understand how to maintain it.
Most people think it takes a qualified heating technician to check their gas furnace or know how to clean a gas furnace. Truth is there are several things a homeowner can do to check and clean their own furnace. A furnace should be checked at the very least, once a year. Typically just before the cold season when there will be a need for the furnace to run. However, it is a good idea to also check it once during the heating season, just in case the filter gets dirty. The furnace filter is probably the number one thing a homeowner can do to keep their furnace running efficient and clean. Most filters are good for about 2-3 months, depending on the cleanliness of the air, or if there are pets. Inspect the furnace filter every other month, and replace it when the original color of the filter media can't be seen through the grayish colored dirt and/or pet fur. The use of a vacuum cleaner with extension to carefully clean off any dust, dirt or spider webs from the furnace. Careful not to break and components, or pull any wires loose. Put the panels back on. Turn power and gas back on. Re-light pilot as needed.
Of all the money you pay to the energy providers, heating and cooling systems make up the majority. HVAC repair prices have risen in the past few years due to expensive tools, increase in fuel prices, labor costs, and a rise in transportation costs. But you can still save on air-conditioning repair by following these steps. Invest In a Pro's Advice When buying an air-conditioner, don't pick what commercials glamorize. Invest wisely and do your homework before going out to the market. There are several types of efficient air-conditioners in the markets. The first type saves energy and the second one saves repair costs. Both types differ on behalf of the number of parts and complexity. Brands that offer drastic savings on energy generally use a significant number of parts which can potentially fail. Improvise Home/Office DesignTry some other ways to reduce the indoor temperature of the building. For example use curtains, window treatments or window film to prevent direct sunlight from entering the building. Tall trees surrounding the building would also reduce the temperature along with detoxifying the air. Improvised building design will let you run the air conditioner at a lower temperature and reduced run time, putting less wear on your HVAC system as well as saving you money.