Just below the evaporator coil in your furnace or air conditioner is a drain pan that catches the condensation coming off the coil.
Air conditioner leaking water inside furnace.
Your ac s inside unit contains the evaporator coil pictured on the right that cools the warm air blown over it.
Eventually if not corrected this will cause pressure problems in addition to water leaks and the furnace will fail to run.
In mild climates like california furnaces and air conditioners are sometimes used during the same season.
You see your air conditioner doesn t just cool your home it dehumidifies it too.
When this happens and your air conditioner is being used the condensation pan fills and water drips onto the heating system.
Excessive condensation from air conditioning is a sign you have an ac issue.
Furnace is leaking when ac is on if your furnace only seems to leak when the air conditioner is running the problem probably isn t your furnace it s your ac.
If you ve got an old unit your drain pan might be rusted or damaged which could mean that the water is running right through it and dripping onto the floor instead of into the drain pipe.
However older furnaces can develop corrosion on some parts and begin leaking water.
Your drain pan is full.
As your ac runs it absorbs moisture from the warm air in your home.
What this means is humidity requires water and so does the humidifier in your home.
If your home has a humidifier you can potentially be seeing water.
This causes condensation moisture to form on the coil just like how water droplets form on a cold glass of water on a hot day.
Is your air conditioner leaking water inside or outside your house or business.
Issue with the furnace humidifier.