Amana Central air conditioner leaking at furnace or air handler
If your Amana air conditioner is leaking water at the furnace or air handler, the most likely cause is an evaporator coil that is not tilted toward the drain outlet. When the coil is level or angled incorrectly, condensation cannot flow into the drain pan and may overflow. A cracked drip tray is another common cause, especially if water is leaking but the tray is not overflowing. A cracked evaporator drain pan can produce the same air conditioner leaking water symptom. Less commonly, a clogged condensate drain tube or drain trap backs water up until it spills from the pan, causing a condensate leak or water under the furnace from AC operation. Turn off power to the unit before clearing a drain tube or trap, and stop if water is near electrical components. Replacing a drain pan or other accessible part may be within DIY scope, but correcting coil installation or doing any repair inside the sealed refrigerant system requires an EPA 608-certified, licensed HVAC technician. Enter your Amana central air conditioner's model number to find the exact replacement drain pan (also called a drip tray) for your specific unit.
01 - Evaporator Coil Not Tilted Toward Drain
To help the condensate water to flow towards the drain outlet in the pan, most installers will tilt the evaportor coil slightly towards the drain hole. If the evaporator coil is not level, or tilted incorrectly, water will not flow to the drain hole and may overflow the pan.
Common
02 - Amana Central Air Conditioner Drip Tray
The evaporator is normally tilted slightly towards the drain hole to help the water to drain properly into the drip tray. If water is leaking from the drip tray but the tray is not overflowing, the drip tray is likely cracked and will need to be replaced.
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The evaporator is normally tilted slightly towards the drain hole to help the water to drain properly into the drain pan. If water is leaking from the drain pan but the pan is not overflowing, the drain pan is likely cracked and will need to be replaced.
When the air conditioner is running, condensation forms on the evaporator coil and drips into a drain pan. From there the water is directed through a pipe with a trap to a floor drain or condensate pump. If the drain tube or trap gets clogged, the water will back up and overflow the drain pan. If water is leaking from the evaporator pan, it is likely the drain tube or trap is clogged and will need to be cleared to allow the water to flow normally. Be sure to shut off the power to the unit before attempting to remove the clog.
Less Common
Frequently Asked Questions
Why is my air conditioner leaking water at the furnace or air handler?
How do I clear a clogged AC condensate drain line or drain trap?
How can I tell whether the evaporator drain pan or drip tray is cracked?
How do I find the correct Amana air conditioner drain pan or drip tray part?
Can I repair an air handler leaking water myself, or do I need an HVAC technician?