If you notice your air conditioner leaking, there are typically a few main reasons that can be the reason why.
The first and most common reason for a leaky air conditioner is a logged air filter.
When your air filter becomes overly clogged with dirt and debris, it can make it impossible for air to properly circulate around your home, and if your air conditioner is working too hard to circulate air through a clogged filter, your evaporator coils can freeze up. Many HVAC professionals recommend changing your air filter every 30 to 60 days, especially if you have pets. If your drain pan is cracked, or full and overflowing, this can be another reason why your air conditioner is leaking. While it is possible to repair a cracked drain pan, it is best to completely replace it with a new one. Your local HVAC professional should be able to replace an air conditioner drain pan in less than an hour, with little to no disturbance to your home. A final reason why your air conditioner may be leaking is because of a clogged condensation drain line. Your condensation drain line can become clogged with algae, fungi, and dirt, once every year or so, it is beneficial to clear the drain line with vinegar. If you try using vinegar and your line is still clogged, it is best to contact your local HVAC company to come and vacuum out the blockage. Regular cleaning of your condensation drain line is the best way to prevent buildup which can lead to blockage, which can lead to your HVAC system needing expensive repair.