Air conditioning heating leaks could be because the drain pan has become damaged due to rust, corrosion, or regular wear and tear. Water could be leaking through the cracks or holes in the pan. If the pan isn’t replaced in time, the dripping water will pool on your floor. If the evaporator coil becomes frozen, ice can form on the coil and block the water from draining. If the coil isn’t thawed in time, the melting ice will overflow from the condensation pan and drip onto your floor.