Problems with ac units are often long in the making, but are only identified when the cold air stops blowing. Of course it always seems to happen on the hottest day of the summer, when the need is greatest. To minimize the chances of losing air conditioning at an inopportune time, proper maintenance is the best option. Scheduling service before the hot weather begins may well prevent the most common problems experienced with cooling systems.

Perhaps the most commonly seen problem with air conditioning is freezing of the coils. In most cases, freezing is a result of reduced air flow. Anytime that return air flow is restricted, the coils will begin to freeze. The most common blockage cause is a dirty air filter. While monthly filter replacement is commonly recommended, many homeowners simply forget to replace the filter in a timely manner. Knowing where the filter is located and replacing it regularly can reduce the likelihood of experiencing this issue.

The other common problems are not as easily handled by an average homeowner. For that reason, an annual checkup by an air conditioning specialist is recommended. An annual servicing can generally prevent the other problems from ever causing a system failure. Problems with electrical wiring, low coolant charge, failure of the exterior fan and other component failures are common and will often be identified during an annual inspection. Proper maintenance can also significantly reduce the operating expense for home cooling. In areas where heavy demand is common, the cost of ac operation can be significant, making the expense of a normal service call seen insignificant by comparison.

In the event problems with an ac system prove to be significant, it might be prudent to consider a system upgrade as newer systems are far more efficient than units installed in past years. A qualified air conditioning specialist can analyze the cooling requirements of the structure and recommend possible alternatives for air conditioning upgrades. Because new ac units typically cost significantly less to operate, the payback of the investment may be quite rapid, saving both money and energy.

Make sure that any technician you choose is a qualified technicians certified by NATE or a similar organization. Qualified technicians can generally locate and repair typical faults with existing air conditioning systems and offer advice to keep the system operating at peak efficiency. They are also able to specify replacement air conditioning systems that most closely meet the needs of a specific home. The net result for homeowners is a system that works as designed and operates at the lowest cost possible.