My air handler is located in my garage. Why can I hear water running when I'm standing by the air filter return? My drain pan and coils have been recently cleaned. Should I call someone out to look at it, it runs and cools fine. I don't want to have a leak in an unforseen place and I see nothing indicating a leak anywhere around the unit. Thanks.

Patti

It could be just a drain line noise or it could be the refrigerant circulating.