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New Evaporator Coils necessary for new Condenser ?

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New Evaporator Coils necessary for new Condenser ? jay-n-123@verizon.net 05-06-2008
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Posted by KJPRO on May 7, 2008, 1:47 am


> FWIW, I would not put Carrier in my home on a bet.


Carrier... lol
Nuff said...



Posted by HankG on May 6, 2008, 2:59 pm

> My mom's 22 year old 4 Ton 10-seer Carrier A/C condenser is shot. Her
> furnace is relatively new.
>
> She wants to replace the old unt with a new Puron Carrier 4 ton condenser.
>
> One HVAC company is saying that they do not install new evaporator coils
> because it is unnecessary, and the efficiency will be around 12 or 13 if
the
> old coils are used with a 15 seer unit. They say they have never had a
> problem with leaving the old evaporator coils in.
>
> Another HVAC company is saying that it is important to install new coils
> because the efficency won't be good, and also the unit will be under more
> stress with the old coils and will likely only last for 4 years.
>
> Which of the two is correct?
>
> Thanks,
>
> J.
>

Beside the previous comments, a 22 year old coil is a leak waiting to
happen.

HankG



Posted by KJPRO on May 7, 2008, 1:49 am

>
>> My mom's 22 year old 4 Ton 10-seer Carrier A/C condenser is shot. Her
>> furnace is relatively new.
>>
>> She wants to replace the old unt with a new Puron Carrier 4 ton
>> condenser.
>>
>> One HVAC company is saying that they do not install new evaporator coils
>> because it is unnecessary, and the efficiency will be around 12 or 13 if
> the
>> old coils are used with a 15 seer unit. They say they have never had a
>> problem with leaving the old evaporator coils in.
>>
>> Another HVAC company is saying that it is important to install new coils
>> because the efficency won't be good, and also the unit will be under more
>> stress with the old coils and will likely only last for 4 years.
>>
>> Which of the two is correct?
>>
>> Thanks,
>>
>> J.
>>
>
> Beside the previous comments, a 22 year old coil is a leak waiting to
> happen.


It's likely to outlast the new coil...
That said... you still have to install a new coil.



Posted by over a barrel on May 7, 2008, 2:40 am

>
> >
> >> My mom's 22 year old 4 Ton 10-seer Carrier A/C condenser is shot. Her
> >> furnace is relatively new.
> >>
> >> She wants to replace the old unt with a new Puron Carrier 4 ton
> >> condenser.
> >>
> >> One HVAC company is saying that they do not install new evaporator
coils
> >> because it is unnecessary, and the efficiency will be around 12 or 13
if
> > the
> >> old coils are used with a 15 seer unit. They say they have never had a
> >> problem with leaving the old evaporator coils in.
> >>
> >> Another HVAC company is saying that it is important to install new
coils
> >> because the efficency won't be good, and also the unit will be under
more
> >> stress with the old coils and will likely only last for 4 years.
> >>
> >> Which of the two is correct?
> >>
> >> Thanks,
> >>
> >> J.
> >>
> >
> > Beside the previous comments, a 22 year old coil is a leak waiting to
> > happen.
>
>
> It's likely to outlast the new coil...
> That said... you still have to install a new coil.
>

Bottoms up I guess float the oil out the top with the calgon shit spose take
your time...soak it...$$$=hours

still that old coil is gonna be all stiff an brittle and inadequately rated
as to test and working pressure while any of the new one will be dual
rated--(duh for lower pressure r22) as well as being listed for the higher
pressures you'll encounter w / 410

--




Posted by ransley on May 6, 2008, 3:23 pm
wrote:
> My mom's 22 year old 4 Ton 10-seer Carrier A/C condenser is shot. =A0Her
> furnace is relatively new.
>
> She wants to replace the old unt with a new Puron Carrier 4 ton condenser.=

>
> One HVAC company is saying that they do not install new evaporator coils
> because it is unnecessary, and the efficiency will be around 12 or 13 if t=
he
> old coils are used with a 15 seer unit. =A0They say they have never had a
> problem with leaving the old evaporator coils in.
>
> Another HVAC company is saying that it is important to install new coils
> because the efficency won't be good, and also the unit will be under more
> stress with the old coils and will likely only last for 4 years.
>
> Which of the two is correct?
>
> Thanks,
>
> J.

Even if it did work the seer increase you get from a new coil will
make a major difference in your electric bill, and that you want. Have
you checked how much you will save. do so, charts might be at Carrier.
But one more point in upgrading you may not need 4 ton, but maybe 3
ton,[ im just guessing here] did anybody do a load calculation or
point that out to you. You have 10 seer, probably its 9 seer by now,
its an energy hog, 15 seer is a big saver in electric costs. If it
didnt run nearly constantly on the hottest days, you might have been
oversized before. You need a load calculation in writing.

Page 2 of 4       < 1 2 3 > last >>
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