House AC Issues..?

Well, it does, but how can I verify that the place the nail goes thru is the same place the line goes thru ?

I can measure the length from the outside to the place where the line comes out, near the bottom of the AC unit outside, and then measure the same distance inside the house, and see if the distance is about the same, since I'm assuming that the line is straight down from the attic along the side(ing) of the house, to the place where it comes out outside..

I guess I could also bring the tek-mate near the nail in the wall ?

But would the best way to repair this be replacing the line ?

There has to be a cheaper way, hopefully..

Thanks

Travis Jordan wrote:

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user
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Does the wall with the nail have the lineset running through it? If so, then I would say this is a likely culprit.

Reply to
Travis Jordan

A leak detector should go off like crazy in the vicinity of the leak. You might want to pull the nail out while the tech is there and see if the detector activates.

If indeed this is the source of the leak then the easiest fix is to evacuate the lineset by pumping down the remaining refrigerant into the condenser unit, then opening up the wall and cutting out the piece of lineset with the hole in it and replacing it with a brazed-in-place coupling. This should be done while the lineset is filled with dry nitrogen. Then the system is recharged. A competent tech should be able to do the entire repair in an hour or two.

This should be a perfectly adequate permanent fix.

Reply to
Travis Jordan

I have never seen a lineset inside a wall have a leak that wasn't caused by a nail or screw. However, all the ones I've seen (about one a year average) leaked out about as fast as you could put it in. As was mentioned, if indeed that is where your leak is, it can be fairly easily repaired, usually. If the hole is fairly small, as it sounds, since yours takes two weeks to leak down, the hole itself can probably just be soldered-- a lot easier and safer fire hazardwise, than installing a coupling inside the wall. If you find that the nail is not near the lineset, the leak is most likely not in the lineset. The only other way to check the lineset is to isolate it and pressurize, or pull a vacuum on it, and see if it holds. Before I would do that, I would double and triple check the evaporator coil-- we find about 80+% of leaks there. Of course it CAN be leaking anywhere in the refrigeration circuit. What is the brand of unit you have? Some are more prone to leaks in varous places than others. Good luck Larry

Reply to
lp13-30

user,

The evaporator is the coil in the attic. The condensor is the coil outside.

If you have a leak in the lineset, run a new lineset exposed up the outside wall hidden inside a downspout. Run the downspout up into the soffit. Looks nice, especially if you already have real downspouts to match. Abandon the old lines in the wall. That is what I have done many times. Line sets DO leak inside the walls, I have seen it many times, but I would have someone else check the units one more time to be sure.

Stretch

Reply to
Stretch

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