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-   -   Why is my a/c weak every time I turn it on for the season? (http://www.diychatroom.com/f17/why-my-c-weak-every-time-i-turn-season-8739/)

yummy mummy 05-27-2007 09:27 PM

Why is my a/c weak every time I turn it on for the season?
 
When I turned on my central air conditioning last year, it wasn't able to cool the house down, and it seemed very weak. I had to call the HVAC guy and was told that it was due to the fact that it did not have enough freon.

Just a few days ago, I went to turn it on for the first time this year, and the same thing seems to be happening.

I guess I have to call the HVAC guy again.
Why do I seem to be losing freon?

Would this be a faulty a/c?

Thanks

mrtech 05-27-2007 11:14 PM

You have a leak in the system that should be checked out and repaired. It may involve just soldering a small leak or it could be a component may need replacing such as a corroded and leaking coil.
It may not be too bad now, but leaks only get worse and the cost of freon is going up rapidly- I suggest asking that the HVAC tech find and repair the leak.
Don't run the system if it is low- you will damage the compressor.

yummy mummy 05-28-2007 08:14 AM

Mr. tech
 
Thank you so much for the information about my air conditioner.
I have contacted the tech today.
Should be coming this week.

Thanks for the tip of not running it because there were 2 hot days last week, and I did run it, (not the whole day but 4-5 hours each day).

Hope I did not screw it up.

Fyrearms 05-28-2007 10:45 AM

I use dye and a uv light to diagnose small leak since they are very hard to find

ron schenker 05-28-2007 04:26 PM

Quote:

Originally Posted by Fyrearms (Post 46603)
I use dye and a uv light to diagnose small leak since they are very hard to find

That's what my car mechanic does and it works every time. He let me have a look once and I could see a yellow stain on the condensor. I felt like a rocket scientist when I put on those special glasses.

handy man88 05-28-2007 04:27 PM

I"d consider getting a new HVAC guy. He should have diagnosed the problem the first time without you having to pay him to come out again to fix the problem. First time, he probably just recharged it without fixing the problem knowing you'll have to call him again and pay for more freon and labor again.

Fyrearms 05-28-2007 11:09 PM

Quote:

Originally Posted by handy man88 (Post 46665)
I"d consider getting a new HVAC guy. He should have diagnosed the problem the first time without you having to pay him to come out again to fix the problem. First time, he probably just recharged it without fixing the problem knowing you'll have to call him again and pay for more freon and labor again.

If it lasted a whole year it`s a small leak...We have no idea how large the leak is until we recharge and see how long it takes to leak out. Unless its completely empty then more than likely the leak is large.
I could spend hours looking for a leak that may be so small it can`t be found.. you wanna pay for the labor on that with no end result?
I usually tell people I have no idea how large or small the leak is ...lets refill and take it from there, I also give them the option of putting in the dye at that time.
Some leaks may only happen when connections contract during the winter.

yummy mummy 05-29-2007 08:51 AM

When he came last year I don't remember him saying that it was a leak, so he refilled it. Only charged me for the service call and the freon was on him. (We know him well, and I would hate to get rid of him unless.........he's starting to take me for a ride.)

But this time, I am armed with great information from all you guys, so I am going to see what he has to say.

He's contacting me, mid week.

handy man88 05-29-2007 08:54 AM

Quote:

Originally Posted by Fyrearms (Post 46702)
If it lasted a whole year it`s a small leak...We have no idea how large the leak is until we recharge and see how long it takes to leak out. Unless its completely empty then more than likely the leak is large.
I could spend hours looking for a leak that may be so small it can`t be found.. you wanna pay for the labor on that with no end result?
I usually tell people I have no idea how large or small the leak is ...lets refill and take it from there, I also give them the option of putting in the dye at that time.
Some leaks may only happen when connections contract during the winter.

That depends on whether it's an A/C unit or a heat pump. If it's just an A/C unit, it could have lost all the gas before winter. You wouldn't be the wiser because you'd be using your gas furnace of oil heater to provide heat for the winter. If it is a heat pump, then you would notice a lack of heat during the winter due to loss of freon.

handy man88 05-29-2007 08:56 AM

Quote:

Originally Posted by yummy mummy (Post 46729)
When he came last year I don't remember him saying that it was a leak, so he refilled it. Only charged me for the service call and the freon was on him. (We know him well, and I would hate to get rid of him unless.........he's starting to take me for a ride.)

But this time, I am armed with great information from all you guys, so I am going to see what he has to say.

He's contacting me, mid week.

Keep in mind, this is all business, nothing personal. Hope he takes care of your problem for good this time.

mrtech 05-29-2007 10:04 AM

Quote:

Originally Posted by yummy mummy (Post 46729)
When he came last year I don't remember him saying that it was a leak, so he refilled it. Only charged me for the service call and the freon was on him. (We know him well, and I would hate to get rid of him unless.........he's starting to take me for a ride.)

But this time, I am armed with great information from all you guys, so I am going to see what he has to say.

He's contacting me, mid week.

That's not a problem. Sometimes we get busy and add freon without checking for leaks and like was mentioned, wait a month or two, then re-check the freon to see how large the leak is and have more time to work on it. I'm sure when asked- he will find the leak.

yummy mummy 05-29-2007 10:57 AM

Thanks mrtech. I hope he will find the leak too.

Also, hoping it won't be anything.

yummy mummy 05-31-2007 08:35 AM

The HVAC guy came out today.
He did the "soap" test on my a/c system and he could not find any leak.
He topped it up with freon.

He did notice that there was a little oil somewhere at the bottom of the compressor, that he said should not have been there.

He suggested that he will put on a "repair kit" so that will not make it leak.

My compressor is still under warranty. I have only had it for 3 years.

I said to him that I want the leak found, and he said that if he has to take the compressor apart, it would end up costing too much.

Any thought on this?

mikemy6 05-31-2007 09:38 AM

Soap nope.
If he has a repair kit I needa gross,
and you cant take a compresser apart the shell is welded together. You really need to use dye (ink it) this is not a gas pipe where soap is OK. The system will have to also have to be reclaimed, blown out (nitrogen),vacced down, and refilled. If, and this is highly unlikely, the comp. is leaking then play the warranty card, also any factory leaks should be covered ie; in the unit itself before the valves. Besides the environmental damage small amounts of air are introduced into the system at each top off, not good! An informed consumer allways trumps an incompetent tech. move on to the next guy(girl) if they're not up to snuff. The top off should will give u some time to look around if need be.Peace out, Mikemy6

yummy mummy 05-31-2007 10:59 AM

Quote:

Originally Posted by mikemy6 (Post 47125)
Soap nope.
If he has a repair kit I needa gross,
and you cant take a compresser apart the shell is welded together. You really need to use dye (ink it) this is not a gas pipe where soap is OK. The system will have to also have to be reclaimed, blown out (nitrogen),vacced down, and refilled. If, and this is highly unlikely, the comp. is leaking then play the warranty card, also any factory leaks should be covered ie; in the unit itself before the valves. Besides the environmental damage small amounts of air are introduced into the system at each top off, not good! An informed consumer allways trumps an incompetent tech. move on to the next guy(girl) if they're not up to snuff. The top off should will give u some time to look around if need be.Peace out, Mikemy6

Thanks mikemy6 for your advice. I really appreciate it.
And yes, I definitely agree an informed consumer always trumps an incompetent tech.

Could you explain what you mean by the system has to be reclaimed, blown out (nitrogen) vacced down, and refilled?

Thanks again.

BTW-when I was questioning him this morning, he was kind of looking at me, as if to say, "where did you get all this from". :wink:


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