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HomeRepair HelpTrane Central A/C RepairTrane Central air conditioner leaking at furnace or air handler Repair
Trane Central air conditioner leaking at furnace or air handler
If your Trane air conditioner is leaking water at the furnace or air handler, the evaporator coil is usually not tilted toward the drain outlet, so condensation cannot flow into the pan correctly and may overflow. A cracked evaporator drip tray is the next likely cause, especially if water is leaking from the tray without the tray being full. A cracked evaporator drain pan can cause the same air conditioner leaking water symptom. Less commonly, a clogged condensate drain line, drain tube, or drain trap backs water up until it overflows, creating a condensate leak or water under the furnace from the AC. Turn off power to the unit before clearing a clog, and protect nearby electrical components from water. Replacing a drain pan (also called a drip tray) is generally a manageable repair, but repositioning the evaporator coil, opening the sealed system, or handling refrigerant requires an EPA 608-certified HVAC technician. Enter your Trane central air conditioner model number to find the exact replacement drain pan or other part that fits your specific air handler.
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 - Trane 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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Common
03 - Trane Central Air Conditioner Drain Pan
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.
Common
04 - Clogged Drain Tube or Drain Trap
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 Trane central air conditioner leaking water at the furnace or air handler?
How do I fix an air conditioner leaking water from a clogged drain line?
What should I check if my Trane AC drain pan or drip tray is leaking but not overflowing?
Can an evaporator coil cause my central air conditioner to leak water at the air handler?
How do I find the correct Trane condensate drain pan or drip tray replacement part?
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