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HomeRepair HelpMammoth Central A/C RepairMammoth Central air conditioner leaking at furnace or air handler Repair
Mammoth Central air conditioner leaking at furnace or air handler
When a Mammoth central 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, preventing condensation from flowing into the pan. If the coil is positioned correctly, inspect evaporator drain pan (also called a drip tray) for cracks, especially when water is leaking but neither pan is overflowing. A clogged condensate drain line, drain tube, or drain trap is less common but can cause water to back up and overflow. This type of air conditioner leaking water may also be described as an AC condensate leak or water under the furnace from AC operation. Turn off power to the unit before clearing a drain clog, and use caution around the air handler's electrical components. Replacing a drain pan (also called a drip tray) is generally a manageable DIY repair, but correcting coil placement or handling refrigerant inside the sealed system requires a licensed HVAC technician with EPA 608 certification. Enter your Mammoth model number to find the exact replacement drain pan or other part for your specific central air conditioner.
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 - Mammoth 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 - Mammoth 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 Mammoth air conditioner leaking water at the furnace or air handler?
How do I fix an air conditioner condensate drain leak?
Could the evaporator coil or drain pan be causing water under my furnace?
How do I find the correct Mammoth replacement drain pan or drip tray?
When should a licensed HVAC technician repair a Mammoth AC condensate leak?
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