Water coming out of back hole.

If your unit is installed properly (very slight tilt down in back) no water should come back into the living area. Water is suppose to be splashed up against the outside coils by the fan blade to help draw heat away from the coils, thus improving efficiancy.

Your evaporator is probably dirty and is blocking some of the air flow so the air has to move around the coil and starts coming in through the condensate drain holes. That stops the condensation (water) from draining out the holes because the air is pushing it back in.Try having the unit cleaned and that should stop that leaking.

Hi there, if it is building condensation up and making that noise do to the humidity, it will not hurt the unit to remove the seal to drain it at all. I have had people go as far as drilling a few holes to let it drain, no harm will come to your unit, trust me.
Sincerely,
Shastalaker7
A/C Contractor
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mcdevito75 here, The portion of the a/c unit that goes outside the window is the evaporator and suppose to leak water, check the drain hole in the unit floor on the outside portion of the unit, reach this drain hole thru another window or have your local a/c repair shop look at it, they come to the house.

The slinger blade (condenser blade) picks up water in the bottom and that helps cool off the freon. It is a built-in design. If water is coming inside the house tilt the ac downwards towards the backside so that the water can drip outside.

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This is probably water, coming from condensation off of the indoor coil. As the coil gets cold, the moisture builds up and drips down into the drain pan, from there is is suppose to be drained out on a drain line.
Sometimes, the drain lin gets plugged and drains in places that it is not suppose to, need to clean the line.
If this has been helpful, please leave me a rating, and contact me if you still have questions.
Sincerely,
Paul

Go outside and see if you can spot a plug up in the drain tube. Some insects will build nests inside the proper size tube and plug it up so that condensation generated by normal operation is not allowed to drain from the unit. Other times, fungus or algae will cause the plug up.

Your plug up may be internal to the machine as well. This might be relieved by swabing out the plug up from outside by means of a fine flexible cable or weed wacker line - be careful!! Drain lines are often hidden very well requiring great detective skills.

Look outside the unit, unless you are very high in the air and clean out the condensate\water drain hole. You live in a very humid climate, you have to keep that hole clear or water will build up. Some units us a splash system to splash on to the condenser to help cool it.

It probably shut off on high pressure. Let it cool down, plug your hole that you drilled and give it another try. The water is suppose to collect there and the fan is suppose to throw it into the condenser to keep it cooler and make it run more efficiently. Good Luck,

kstfas

Hi, If this is a new unit I would check the filter first and make sure it is clean. Also check and make sure it is slightly tilted to the outside. If its an older unit it probably needs cleaned. Window units naturally create water in the evaporator area. The water is suppose to drain to the back of the unit to the condensing area where the slinger ring on the condenser fan blade slings it into the condenser coil making it more efficient. There is usually a drain hole to drain excess water from the back of the unit. Any dirt in the pathway of this water or the wrong tilt will cause water to build up and drip or blow out the front. Anything touching the evaporator coil allowing water to run down the obstacle into the wrong area will cause the same thing. reduced air flow will cause the evap to freeze which could also cause a water problem.