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Subject Author Date
A/C unit coil Sally 08-08-2006
|--> Re: A/C unit coil Stormin Mormon08-08-2006
| `--> Re: A/C unit coil Bob (but not TH...08-08-2006
---> Re: A/C unit coil Richard J Kinch08-09-2006
---> Re: A/C unit coil Nathan W. Colli...08-09-2006
`--> Re: A/C unit coil Stormin Mormon08-09-2006
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Posted by aka-SBM on August 15, 2006, 8:10 am

>> But if it's leaking
>> refrigerant, how can it be working well enough to ice up?
>
> Oddly, a low charge makes it run colder and ice up:
>
> http://groups-beta.google.com/group/alt.home.repair/msg/0420eda678cc180f
>
> Don't confuse temperature with heat. The fact that part of your
> evaporator
> is below freezing temperature doesn't mean that it is moving much heat.


Nothing odd about an evap freezing on low charge. For every pressure, there
is a temp...how do you think we measure superheat?



Posted by on August 15, 2006, 8:05 pm
"aka-SBM" wrote:

>
>>> But if it's leaking
>>> refrigerant, how can it be working well enough to ice up?
>>
>> Oddly, a low charge makes it run colder and ice up:
>>
>> http://groups-beta.google.com/group/alt.home.repair/msg/0420eda678cc180f
>>
>> Don't confuse temperature with heat. The fact that part of your
>> evaporator
>> is below freezing temperature doesn't mean that it is moving much heat.
>
>
>Nothing odd about an evap freezing on low charge. For every pressure, there
>is a temp...how do you think we measure superheat?
>

with a super thermometer?

Posted by CJT on August 8, 2006, 10:37 pm
Sally wrote:

> Hi,
>
> I moved into this (new) house just under 9 years ago and the air conditioner
> has stopped blowing cold air. A repairman came out a little while ago and
> said that the coil may need to be replaced (for $1,800) and that coils
> typically only last 5-7 years.

Don't let my 20 year old unit hear that.

I know that A/C repairs tend to be expensive,
> but is that a reasonable price (the unit is a Lennox 10AB48) and is it true
> that coils only last 5-7 years? That doesn't seem very long to me, but then
> I don't know much about it. Anyway, he couldn't do the work tonight because
> the coil was frozen (?) but is planning to come back tomorrow morning. I'd
> appreciate it if anyone who knows about these things can give me their
> opinion based on what I described.
>
> Thanks in advance.
>
>


--
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam. Our true address is of the form che...@prodigy.net.

Posted by Bob (but not THAT Bob) on August 8, 2006, 11:15 pm
CJT wrote:
>
> Sally wrote:
>
> > Hi,
> >
> > I moved into this (new) house just under 9 years ago and the air conditioner
> > has stopped blowing cold air. A repairman came out a little while ago and
> > said that the coil may need to be replaced (for $1,800) and that coils
> > typically only last 5-7 years.
>


> Don't let my 20 year old unit hear that.


Mine was almost 30 yrs old when it gave up - and the complete
replacement cost only $1100 (2 ton).

Posted by Sally on August 8, 2006, 11:24 pm
First of all, I'd like to thank everyone for their feedback and would
welcome any additional thoughts / opinions.

Regarding the ice, all I saw was a ball of it around some kind of hose
coming out of the compressor (?). Despite having an appointment for 2:30, he
didn't arrive here until 8:00 in the evening so it's possible that the ice
wasn't the real reason he wanted to wait until tomorrow. That's just as
well, though, since this has given me time to ask you folks for your
opinions, for which I'm grateful.

I should add that he didn't say that the coil definitely needed to be
replaced -- he simply listed that as one of the possibilites. He did mention
other possibilities such as the coil simply being dirty or having a minor
leak that could be fixed relatively cheaply. The part that concerned me was
his claim that coils normally only last 5-7 years, although the consensus
here seems to be that that's not true.



Page 3 of 8       < 1 2 3 > last >>
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