how to check freon leaks
My unit seems to have a leak and two weeks ago, a tech came in and recharged without telling where it leaks.. He simply told he wouldn't know and asked me if I want it charged. It was hot day and I had to have a cool house because of my baby. He guessed it was leaking from condensor unit because surchage cap was oily.
Since then it worked and today, my unit does not seem to work at all. Outside fan blows cool air instead of warm and I don't see any condensation on outside unit. Lucky, cold front came in.
I plan to call another tech or maybe the same tech and ask what's going on. However, I doubt if the tech from the same company will find anything and wanted to know if there is anything I need to ask them to do to find the leaks.
I also plan to replace my outside unit and got some quotes to replace. My evaporate coil is only 4 years and all techs told I should just keep them since it's relatively new. However, can the evaporate coil be leaking as well? and does a tech have a way to detect a leak?.
Did he check the filter, blower, and evaporator coil for dirt prior to checking the charge? Did he measure the indoor wetbulb temperature? What about the suction/liquid line temperature? (outdoor?)
If the answer to any of those questions is no, you need to find another service company.
Leaks can be found with the use of an electronic leak detector or a soap solution. Sometimes there is no leak; low (suction) pressure can be caused by insufficient airflow.
You can keep it, provided that it can be matched with a new 13 SEER outdoor unit. (They don't make 10-12 SEER units any more) The metering device may need to be replaced if it's not a TXV. Yes, the leak could be in the evap coil or lineset.
My evaporate coil is only 4 years and all techs told I should just keep them since it's relatively new. However, can the evaporate coil be leaking as well? and does a tech have a way to detect a leak?.
I don't think the tech didn't check anything except for some pressure check for freon. He didn't bother go to attic until I asked hime to check.
Okay,......I have tried two techs so far this year and turned out pretty bad ..I guess I will try my luck again.
if you don't feel you'll get anywhere with the most recent tech and are going to have a different company come out, do some research before just calling the next company you see in the phone book. ask friends, neighbors, co-workers about any recommendations they may have. when you find out who you're going to call, tell them briefly the history on your system and ask if the tech they'll be sending out will have the training, the tools and the time to accurately diagnose your systems needs.
Originally Posted by noltian
* i wouldn't mention that you have plans to replace the condensing unit though. i'd just let them look at the whole system and make their recommendations based on what they know it needs.
* ask questions. it is our job to help you. helping you means answering your questions and educating you (to a degree) about what you need and why.
It can take as little as fifteen minutes, or four hours to find a leak(s). All time that you pay for. Seems to me, if you call, and ask them to find a leak, they should be able to find it. Yes, an evaporator coil can start leaking, a week after installation. If you're shopping price alone, then you can expect the results you've gotten so far. There's a couple of contractors from your area that visit this board, you might want to contact one of them.
Leaks can be in a number of places:
pump down valves
Better to have leak search done by a professional ..
'Life begins with the journey each day'
when you get whoever you get "be specific as you can" to look and find the "Leak" , and then maybe you will see some action taken place.
Matt 7:12 The Golden Rule
"Do for others what you would like them to do for you. This summary of all is taught in the law and the prophets.