If your air conditioner is making a lot of water be happy because that is good news.
Air conditioners make us comfortable in hot weather two ways.
The cool air blowing at us sure feels great on a hot day but the dehumidifying effect is just as important to our comfort.
When the hot sweaty air hits the cold coil of the air conditioner, it not only cools the air it squeezes the moisture out of the air too.
If your house is full of hot humid air, the air conditioner will condense the excess water vapor into liquid water that can be drained outside.
If you have a window type AC, it should be tilted ever so slightly. It should be high indoors and low outdoors. There is a drip pan built in the floor of the AC cabinet to catch the condensed water.
The water should run toward the outdoors end of the AC unit. There is a drain hole, some where at the outboard end to let it drip to the ground. Some units have a fitting for a pipe or hose to direct the water where you want it. The ground under the AC is a good place to plant flowers or vegetables to benefit from the watering.
Make sure that the drain hole is clear so the water can get out. When the drain hole gets plugged two ugly things can happen. If the unit is level or tilted the wrong way, water will leak into the living space of your home.
The other problem is that the fan that blows the cool air into your house will start to pick up the water and blow it onto the cold coil. The water on the coil will freeze into ice. The ice will build up until the coil is blocked, stopping the cool airflow.
You will have a wet mess inside the house when all the ice melts and the water runs in.
It is time for action:
Shut the AC off. Unplug it.
Gently wedge the AC housing up inside so it will drain outward.
Go outside and clear the drain hole.
You can either let the ice melt on its own or help it along with a hair dryer.
After the ice is gone and the pan drained outdoors, plug in and switch it on.
Central air conditioning has a cold coil hidden in side the ductwork by the furnace. It has a drip pan under it to catch the water and a drain pipe that may run to a floor drain.
It is a good thing when you see water running out of the drainpipe. If it isn’t coming out the drain then it is going somewhere it should not be. If it drains down inside the furnace, it will cause rusting of the furnace. Then the moisture will be blown back into the house by the fan.