Sadly, so many people do not regard their air conditioner as an appliance that needs servicing regularly. They feel that if the unit works well, there is no need to do anything to it. If they do not service the unit regularly, they will end up needing an air con repair, and this means it is probably an emergency. If you wait until the unit breaks down to finally call someone to look at it, chances are it will be a costly repair. These repairs are avoidable if you have the unit properly maintained. The cost of the service itself is a lot less than a repair.
The air conditioner is probably a solidly built unit, but it is just a mechanical appliance, and therefore humanmade and can break down. Mechanical things break down and having them properly serviced will keep repairs at a minimum. A professional service person will know exactly the parts to look at and maintain to keep the unit running well for years. They know which parts tend to wear out and break down over time and can keep an eye on them. Some things need to be cleaned, oiled, and replaced to keep the unit running well.
Having the air conditioner serviced regularly will help in preventing high air con repair calls. Ignoring a system just because it is running well will eventually lead to the need for a repair call. Whereas performing simple maintenance may have prevented it. The cost to repair air units is very high, unfortunately. Many times people will opt to buy a completely new unit to keep from having to pay for costly repairs. When you think you are going to save a few dollars by skipping maintenance, you may be adding to a very costly repair instead.
Another reason to keep the air conditioner well maintained is to help save energy. A maintained unit will hum along and operate efficiently saving energy by reducing the cooling costs. The savings in the monthly utility bills will more than cover the cost of the yearly servicing and will save by not having repairs, which will cost more. Air conditioners are well built and if properly maintained will run at top efficiency for years. The less demand the unit makes on the electricity, the more money you will save each month on your electric bill.
Maintain the air conditioner by hiring a recommended professional heat and air service person. It is especially helpful if you can hire one that specializes in the particular brand you own. They will know how the air unit operates and will know if there are issues that may be in need of an air con repair. They will know how to check for the proper coolant levels and to add coolant if needed. They will know which parts to examine for wear and tear. These are basic services that if done yearly can save you hundreds and even thousands of dollars in repairs.