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HomeRepair HelpMars Central A/C RepairMars Central air conditioner leaking at furnace or air handler Repair
Mars Central air conditioner leaking at furnace or air handler
If your Mars central air conditioner is leaking water at the furnace or air handler, the problem is usually in the evaporator coil drainage system, not the refrigerant system. The most likely cause is an evaporator coil that is not tilted toward the drain outlet, allowing condensate to miss the drain pan and overflow. If the air conditioner leaking water is coming from the drip tray without the tray overflowing, the tray may be cracked and require replacement. A cracked evaporator drain pan can cause the same ac condensate leak, including water under the furnace from AC equipment. Less commonly, a clogged condensate drain line, drain tube, or drain trap backs water up until it overflows the pan. Turn off power to the air handler before inspecting or clearing a clog, and use caution around electrical components. drain pan and drain line repairs are generally suitable for careful DIYers, but correcting coil installation or handling refrigerant requires a licensed HVAC technician with EPA 608 certification. Enter your Mars central air conditioner model number to find the exact replacement part 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 - Mars 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 - Mars 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 air conditioner leaking water at the furnace or air handler?
How do I fix an AC condensate leak caused by a clogged drain tube or trap?
How can I tell whether the air conditioner drain pan or drip tray is cracked?
Can an incorrectly positioned evaporator coil cause my air conditioner to leak water?
How do I find the correct Mars central air conditioner drain pan or drip tray replacement part?
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