I hear a constant drip from my basement floor drain. I have filled the drain with water to ensure the trap is full. I can not find a leaky tap or toilet in the house. I have turned off the water supply to the house nothing stops the drip. What could it be.
Andy :)

Hi Andy,

Have you a AC condensate drain line or a heater T&P valve drain line discharging into the floor drain? Regards, Tom