Your air conditioning system is a closed loop system that only becomes low on freon if you have a leak in the refrigeration lines or coils. A normal operating system circulates freon from your outdoor condenser to the indoor evaporator coil through copper lines using a compressor. Freon does not get consumed by the normal operation of the system. The only way that a system ( if properly charged upon start-up) can  become low on freon is if it is losing the freon through a leak. Leaks can occur in coils or copper lines and can be caused by factors such... Continued

I get this question posed to me from time to time by homeowners and business operators. The simple answer is: because it needs it! All kidding aside, having your a/c system tuned up is  very important to keeping your system running efficiently and safely. The number one cause of  breakdowns on heating and air conditioning equipment is dirt. Most outdoor condensers and heat pumps are exposed to the elements all year long. They can become clogged with dirt, dinged by hail or lawnmowers, or even damaged by your pets. The best way to keep your system running at a high level is to have... Continued