I have a Trane XL16 Heat Pump dual fuel setup with a Trane XV80 gas furnace that was installed this past May.
I just noticed a small drip from the small copper tube (liquid line?) that enters near the indoor coil above the gas furnace. I had noticed a small collection of liquid on top of the furnace a two weeks ago, but wasn't sure where it came from so I just cleaned it up and was going to keep an eye on it.
Now I can see another small collection of liquid again on top of the furnace and can feel that it's coming from this small copper (liquid) line. I can see where the copper line looks to be soldered as it turns to enter "comfort coil" and this is where the small leak is.
Is this a big problem? Should I get my contractor out quickly?
Thanks for any advice.