If you see tiny drips instead of a bigger puddle near the outside of your furnace or air handler, water may be bouncing off the evaporator coil rather than properly draining into the drain pan and condensate line. This can take place if the coils are soiled, or if holes in the insulation around the coils redirect the water.
The easiest approach to stop the evaporator coil from going downhill is to keep up with annual air conditioning maintenance using a Atmostemp Service Experts membership. Air conditioners require refrigerant to create cold air, so getting it checked thoroughly during seasonal maintenance is incredibly beneficial for the longevity of your unit. Without adequate refrigerant, the evaporator coils can freeze over and cause the drain pan to overflow as they thaw.
Contrary to some expectations, your AC does not need to be refilled unless there is a leak. The system is sealed and recharging is only needed when a leak happens inside the system.
Your air conditioner's filter should be changed regularly to encourage enough airflow. Without adequate ventilation, the evaporator coils could become too cold and freeze. The evaporator coils will then thaw, causing excess water to fill in the drain pan—potentially starting an overflow.
To resolve this, try changing your air filter. Air conditioners are designed to provide enough cooling for warm weather. Running your AC when outdoor temperatures are 60 degrees Fahrenheit or lower could cause the evaporator coils to freeze.
Once thawed, the water and ice will drop off the evaporator coils and may lead to an overflow because of ice blocking the drain pan opening. Air conditioners are manufactured to last, but nothing survives forever. If you own an AC that is 12 years or older, the drip pan may be damaged or corroded after years of normal use.
If the drain pan has holes in it, a water leak might appear as condensate seeps directly through it. But the surefire way is to have a professional use a special vacuum to suck the blockage material out.
Got an old air conditioner years? The drain pan may be damaged or rusted through, so water just falls right through. Is your furnace and indoor AC unit installed in the basement? If so then there is a condensate pump that pumps the water outside. You will need to repair or replace the pump. A dirty air filter blocks airflow over the evaporator coil.
The heat gets absorbed by the refrigerant in the evaporator coil. The moisture, however, trickles down the coil and collects in a drain pan. As it ages, this drain pan can rust and crack, and the water collecting in it can start to leak out into your home. The solution here is simple: replace the pan. The water that collects in the drain pan mentioned above exits your home through a drain line. Dust, mold, and other debris can create a grimy clog inside that pipe that blocks water from flowing out.
Instead, the water fills up the drain pan and spills over onto your attic floor. An HVAC technician can solve this problem by unclogging and cleaning your drain line so that water can flow out freely once again. On the down side, it may require multiple applications, adding significantly to the cost.
What is this device that can cause such problems? Unclog the drain or install a new pan if needed. Call us at if you need help. One red flag to watch for: Low refrigerant. As I noted in a recent blog post, there are several easy steps to prevent this.
How do you stop an evaporator coil from leaking near Birmingham? You have three choices to stop an evaporator coil from leaking : The Temporary Fix — Adding refrigerant will put off the problem for a while. The Maybe Fix — Repairing with a sealant might or might not fix the issue. The Definite Fix — Replacing the coil is the only surefire way to get rid of the leak.
How do I know if my evaporator coil is bad near Birmingham?
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