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line set replacement help Bruce Kelly 05-31-2007
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Posted by Bruce Kelly on May 31, 2007, 10:51 pm
I am replacing a 10 seer 3ton a/c system with a 15 seer 3ton. The existing
lineset is ~80ft, of which 30ft is inaccessible.

for full ratings, Goodman requires the use of 1 1/8" suction line, while the
existing line set is only 3/4" x 3/8"

is it worth while to go ahead and replace the 50' run with 1 1/8" even
though the middle 30' will still be 3/4" ?

customer states that condenser has already been replaced once after only
five years. The existing condenser is dead after ~8yrs. I advised replacing
complete line set, but cost will be prohibitive to customer (still probably
less than replacing the condenser after 8yrs).

I can relocate the condenser to the south side of the house which will
reduce the run by an additional 25 to 30 feet, however it will get a lot
more heat on that side of the house.

any recommendations?



Posted by Noon-Air on May 31, 2007, 10:54 pm

>I am replacing a 10 seer 3ton a/c system with a 15 seer 3ton. The existing
>lineset is ~80ft, of which 30ft is inaccessible.
>
> for full ratings, Goodman requires the use of 1 1/8" suction line, while
> the existing line set is only 3/4" x 3/8"
>
> is it worth while to go ahead and replace the 50' run with 1 1/8" even
> though the middle 30' will still be 3/4" ?
>
> customer states that condenser has already been replaced once after only
> five years. The existing condenser is dead after ~8yrs. I advised
> replacing complete line set, but cost will be prohibitive to customer
> (still probably less than replacing the condenser after 8yrs).
>
> I can relocate the condenser to the south side of the house which will
> reduce the run by an additional 25 to 30 feet, however it will get a lot
> more heat on that side of the house.
>
> any recommendations?

Do it right



Posted by Bill on May 31, 2007, 11:55 pm

> I am replacing a 10 seer 3ton a/c system with a 15 seer 3ton. The existing
> lineset is ~80ft, of which 30ft is inaccessible.
>
> for full ratings, Goodman requires the use of 1 1/8" suction line, while the
> existing line set is only 3/4" x 3/8"
>
> is it worth while to go ahead and replace the 50' run with 1 1/8" even
> though the middle 30' will still be 3/4" ?
No. You said Goodman required 1 1/8".

> customer states that condenser has already been replaced once after only
> five years. The existing condenser is dead after ~8yrs. I advised replacing
> complete line set, but cost will be prohibitive to customer (still probably
> less than replacing the condenser after 8yrs).
Why prohibited? Why did the condenser die?

> I can relocate the condenser to the south side of the house which will
> reduce the run by an additional 25 to 30 feet, however it will get a lot
> more heat on that side of the house.
Solar load? Relocate it.
> any recommendations?

This has been a problem from day one. Do a load calc. Check the existing
system specs. Find out why.

Dude you get to charge what it takes to do the job right the first time.
After that you get to eat any screw ups or problems.
Customer is paying for a properly installed system. Anything else is
unacceptable.
Proper installation first. Cosmetic concerns etc are secondary.
Some jobs it's cheaper to walk away from at the beginning. There are
always other jobs. Back off if you have to. Problem jobs are great money
makers. But the truly hosed ones I prefer my competitors to have.

You should join RSES. Take a seminar or four.

--
http://michellemalkin.com/

Posted by on June 1, 2007, 12:29 am

> I am replacing a 10 seer 3ton a/c system with a 15 seer 3ton. The
existing
> lineset is ~80ft, of which 30ft is inaccessible.
>
> for full ratings, Goodman requires the use of 1 1/8" suction line, while
the
> existing line set is only 3/4" x 3/8"
>
> is it worth while to go ahead and replace the 50' run with 1 1/8" even
> though the middle 30' will still be 3/4" ?
>
> customer states that condenser has already been replaced once after only
> five years. The existing condenser is dead after ~8yrs. I advised
replacing
> complete line set, but cost will be prohibitive to customer (still
probably
> less than replacing the condenser after 8yrs).
>
> I can relocate the condenser to the south side of the house which will
> reduce the run by an additional 25 to 30 feet, however it will get a lot
> more heat on that side of the house.
>
> any recommendations?


Replace the *complete* line set!



Posted by Bruce Kelly on June 1, 2007, 2:58 pm

>I am replacing a 10 seer 3ton a/c system with a 15 seer 3ton. The existing
>lineset is ~80ft, of which 30ft is inaccessible.
>
> for full ratings, Goodman requires the use of 1 1/8" suction line, while
> the existing line set is only 3/4" x 3/8"
>
> is it worth while to go ahead and replace the 50' run with 1 1/8" even
> though the middle 30' will still be 3/4" ?
>
> customer states that condenser has already been replaced once after only
> five years. The existing condenser is dead after ~8yrs. I advised
> replacing complete line set, but cost will be prohibitive to customer
> (still probably less than replacing the condenser after 8yrs).
>
> I can relocate the condenser to the south side of the house which will
> reduce the run by an additional 25 to 30 feet, however it will get a lot
> more heat on that side of the house.
>
> any recommendations?
>
>

Thanks for everyone's comments- I think I knew the correct answer but I just
wanted some guidance, as I'm relatively new and still learning the trade.

I just priced out 80' of 1-1/8 x 3/8" and it was almost $500! I believe I'll
revisit re-locating the condenser to the south side of the house, as an 80'
run is over the maximum recommended length limits for Goodman. Relocating
would reduce the line length by 25'-30' and probably 8' vertically. I need
to go back and get exact measurements.....



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