Most Common Central Air Conditioner Problems


Having an air conditioner in your home is a must if you live in warm or hot climates that remain that way nearly year-round. Most houses and apartments either come with or have the capacity to support an air-conditioning system or window unit, both of which are susceptible to breaking in a variety of ways. Knowing the warning signs of a possible problem with your unit could save you time and money in the future.

Will Not Cool

  • Perhaps the No. 1 complaint of air conditioner users is that a unit will not cool to a certain temperature or at all. This may be indicative of a small or large technical issue. The do-it-yourself website Home Tips recommends turning off the unit and opening it up to clean out any debris that may have accumulated within.

Leaking Water

  • While an air-conditioning unit may appear to perspire occasionally, reflecting a difference between the temperature of the room and the unit itself, this is a normal process of condensation that is released through a drain tube. Any water that leaks out and pools next to the unit is characteristic of a problem. One reason for this may be that ice has formed on the unit and needs to be thawed out.

Noisy Unit

  • Each air conditioner makes a certain level of noise that is considered normal for the brand and model; however, there are times when that noise may change and become louder with each use. This may be a result of dirt and other detritus that have accumulated on the compressor fan blades.

Loss of Refrigerant

  • In some cases, it may be refrigerant and not water that is leaking from your air-conditioning unit. Do not add more refrigerant, but have a qualified technician come to your home to inspect the unit instead. It will most likely be something that you cannot fix yourself.

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  • Photo Credit window air conditioner image by Aaron Kohr from
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