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Help! My Air Conditioner is Leaking Water Inside My House

You almost made it through the summer and it happens. Your air conditioner mysteriously starts leaking water inside your house. If this has never happened to you before, don’t be alarmed. Questions about water leaking from the air conditioning unit is actually one of the most common ones we receive.

Unfortunately, a leaking air conditioner is a symptom, and there are a variety of possible root causes. Here is a list of considerations when getting to the bottom of this problem.

What Causes An Air Conditioner to Leak?

For an air conditioner to work, warm, humid air that is inside your home is pulled through a condenser unit inside the a/c where it is then cycled back out as cool, dry air into your home. During the dehumidifying process, water is removed from the air, so some condensation should be expected. Pooling or leaking is different than condensation and should be addressed immediately. Here are the possible reasons for a leaking air conditioner:

  • Broken Condenser Pump – This can be tested by pouring water into the condenser pan to see if the excess is pumped off. If not, the motor or the condenser may need to be replaced. This is a job for your HVAC specialist.
  • Incorrectly Installed A/C Unit – If your unit is not level or if there’s too much proessure, this could cause the valves to leak and water to pool.
  • Blocked Drain Hole – One of the most common (and least costly) causes of a leaking air conditioner is a blocked drain hole. Sometimes they become blocked with dirt or debris. If this is the case, the leak will stop as soon as the blockage is removed.
  • Air Leakage – Compromised seals on the air conditioner can allow excess warm air inside of the unit, which can cause excess moisture to pool below the unit. Your HVAC specialist at SubZero air conditioning of St. Petersburg can reseal the outside of the unit and stop the leaking problem.
  • Temperature Changes – When it starts to cool off outside, as certainly will happen as the winter months approach, water can build up, pool, and sometimes overflow just because there isn’t as much evaporation happening as quickly in cooler temperatures. Nothing really needs to be done in this situation. Turn the unit off. When the temperature rises, the pooling should stop.

What Should I Do If My Air Conditioner is Leaking?

Of course, if your A/C unit is spilling water through your ceiling, it can be quite a situation. Time is important in order to minimize damage and the chance of an electrical emergency, so you’ll want to call your HVAC repair specialists at SubZero as quickly as possible. You’ll also want to turn the power off to your A/C unit at the breaker box as soon as you notice the problem.

How Can I Stop the Leaking From Occurring Again?

Have your A/C unit inspected annually. Our maintenance program includes a full system inspection to ensure it is working properly, replacement of filters, and topping off refrigerant and lubricants as needed.

Whenever there is sign of a leak it is best to contact one of our HVAC specialists. Remember, electricity and water don’t mix, so it’s always best not to include A/C repair on your list of “Do It Yourself” projects. We’ll keep your unit running strong and leak-free.

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