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Water can fall off of coil prematurely, before it reaches the drain pan, sometimes due to debris on the coil surface, airflow turbulence in the return air box, and in some instances I've never resolved until the machine was replaced. The drain pan could be cracked or have blocked channels that allow water to drain from the rear to the front. It could also have ice on it/freezing up. Some will developed a thin sheet of ice and drip water. The drain line may be stopped up or broken/loose fitting. Some coils have a laminate on the aluminum fins that can deteriorate. Hope this gives you something to check!
you would need to drill the pan ad install a drain hose on or around the bottom of the water tank, you will need a place for that water to drain to, there is auto drain pumps that are used on under cabinet ice machines also, but $$$ .. hope i was of help.. jay
Dear Customer,
The likely reasons for a leaking AC are...
1) Improperly installed. A window air conditioner must be slightly lower at the rear than the front. This allows the water being removed from the room to drain to the back of the machine. A difference of one inch is sufficient. This is always the first thing to check. Many are improperly installed in the haste to get relief from the heat. If installed too low at front the water will flow into the room rather than outside. If installed too low at rear, water can roll out front edges before has chance to exit towards rear drain.
Icing up. Water being de-humidified can turn to ice if there are problems with the cooling system. There are many reasons for an air conditioner to produce ice. Remove front grille while machine is operating. If ice is present on the cooling coil you will probably need service. For more information see our other article:Why window Air Conditioners Ice up.
Air leakage around air conditioner. If warm air is able to enter around the air conditioner it will encounter cooler, dryer air. When they meet condensation will occur. If water leaking from front of air conditioner inspect to see if dripping from body of machine, or water droplets clinging to front area. To test, operate machine for 30 minutes and then use flashlight to check under front edge of base. Small water droplets here indicate an air leakage problem. Add foam insulation to stop warm air from infiltrating.
Drain hole blocked. Rear of air conditioner base has a drain hole or groove to allow water to escape. If becomes blocked water can back up. To test, operate machine for 30 minutes and then inspect if draining properly. If appears blocked use a small piece of wood to open drain hole at rear of metal base. CAUTION: Never be tempted to drill holes into the air conditioner body to relieve water pooling. Severe damage can result.
Internal drains blocked. There are small passageways that allow water to drain from front of air conditioner to the rear. If they become blocked water will pool at front of machine and overflow onto floor. If this happens the air conditioner will require removal from window and servicing.
Outside temperature too cold. This occurs at end of cooling season. If outside temperatures drops below 60 degrees Fahrenheit at night the cooling coil may ice up. If no leakage at bedtime but water in front of machine in morning, suspect this problem. If this problem suspected turn off machine before bedtime and restart as day warms. Alternately, operate machine at night with selector switch in ‘fan only’ position. This will circulate room air during night but not allow cooling.
Hope u find this useful. I'll be thankful if u could rate this. thank you.
Check to see if the drain is blocked by particles/debris of any type. Also make sure that the unit is level--as level as possible. I have my Whirlpool Portable AC in 4 inch bed risers so I can drain it really easily. I slip under a small low rise pan and drain it every two days or so when it is running. Mine leaked when I tried to incline it backwards to make it drain faster. As soon as I leveled the unit the leak stopped and water again came out the hose. These units must be kept level to prevent leaks so now I always do that.
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