6 yo lennox leaking freon

[Muffy Links]

Had a new lennox high eff ac installed 6 years ago. Had it serviced this year to clean the A coil. Week later the unit is out of freon. Called themback and said it was most likely the A coil leaking although he could not find the leak. Finally got a hold of the orig installer (diff co) and he came over and pump it up at n/c 9 pounds of freon and a day and half later the compressor shuts off due to low pressure (out of freon again). Both techs cannot find the leak.

Leaking that fast should'nt it be easy to find the leak? Far fetched ?, but could it leak on the pipe run from the compressor to the a coil somewhere due to a crazy vibration that wore a hole in the line?

2nd tech says he soaped the a coil and used his leak detector and could not find it leaking on the a coil.

What should I ask the tech to do to find the leak? Whats the proper procedure?

thanks.

Mango

[Luca]

Call a different company, 9 lbs in two days is a pretty good leak. Could be leaking in the line set.

[Puddin' Man]

They didn't check the hi-side line/connections for a leak?

He did this right after adding 9 lbs?

I guess you could call back, ask for their most experienced (certified) tech. Might wanna stop by the shop, talk to the svc. mngr. firsthand, see if -he- looks competent.

They rarely check everywhere. I had a nasty leak back in '94, nobody could find it. Finally a friend found the leak in the condensing coil: my male dog had been sneaking around, pissing on it (presumably) for about 10 years. Had to replace the coil. I now have only female dawgs. :-)

Good Luck, Puddin'

"Mit der Dummheit kaempfen Goetter selbst vergebens!" -Friedrich Schiller

[Muffy Links]

As a followup, I went down stairs and traced the line coming out of the furnace back to the compressor and I notice some oily residue about two feet in under a finished room. I also noticed that the clip holding the line to the floor joists rusty. Would a leak of that size leave an oily residue?

thanks for everyone's help btw. Muffy

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[Tony Hwang]

Hmmm, There is such things as Freeon sniffer or leaking indicating dye.

[Noon-Air]

yes

[Edwin Pawlowski]

Yes.. You have more ability than the idiots they sent out. It would be fair to pay for the repair of the leak, but you should not have to pay for a re-charge because of the incompetence of the first tech. They should have followed the lines and found the leak the first time. The second charge should be on them. If they refuse, take them to small claims court and point out their lack of skills and ability that caused the second loss.

[Meat Plow]

You just need to find someone competent.

[Tekkie®]

To keep Tony Hunglow away from it!