It's still working after 20 years, but I just bought the house last year and
want to replace entire 2 zone system before it dies. Three reputable local
outfits have presented quotes (in 10-15K range) for a 3 ton and a 1.5 ton.
Of the three only one explicitly mentioned replacing the 20-year old R22
line sets with new, the other two said nothing about this. Since the
upstairs unit's plumbing runs inside walls the one man proposed an R22 unit
there, but the others want to use the new 410 refrigerant in the old lines
(I assume, since they proposed new newer refrigerant and din't say anything
about running the lines up the side of the house hiding in downspout camo).
Does this sound correct? I understand there's a significant pressure
differnece in the two line sets. Units proposed are Trane and American
Standard, replacing a Ruud system.
Thanks in advance for any good thoughts.

Hi OB, hope you are having a nice day

On 13-May-05 At About 06:30:28, OB wrote to All
Subject: Replacing 20-yr old Heat Pump

N From: "

N R22 is amonia, don't think it is outlawed as is R12???


R717 is ammonia, not R22.


-= HvacTech2 =-


... "A friend of mine is in jail for counterfeiting pennies..."- s.w.

___ TagDude 0.92á+[DM]
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++
spam protection measure, Please remove the 33 to send e-mail

R22 is amonia, don't think it is outlawed as is R12???
"TT" wrote in message
.net...
It's still working after 20 years, but I just bought the house last year
and
want to replace entire 2 zone system before it dies. Three reputable
local
outfits have presented quotes (in 10-15K range) for a 3 ton and a 1.5 ton.
Of the three only one explicitly mentioned replacing the 20-year old R22
line sets with new, the other two said nothing about this. Since the
upstairs unit's plumbing runs inside walls the one man proposed an R22
unit
there, but the others want to use the new 410 refrigerant in the old lines
(I assume, since they proposed new newer refrigerant and din't say
anything
about running the lines up the side of the house hiding in downspout
camo).
Does this sound correct? I understand there's a significant pressure
differnece in the two line sets. Units proposed are Trane and American
Standard, replacing a Ruud system.
Thanks in advance for any good thoughts.

Hi Stormin, hope you are having a nice day

On 14-May-05 At About 01:03:02, Stormin Mormon wrote to All
Subject: Replacing 20-yr old Heat Pump

SM From: "Stormin Mormon"

SM I can't remember the R number for ammonia. 800 something. But, R-22
SM is hydro chloro difluoro methane.

R22 is chlorodifluoromethane. if it had water it would cause acid

-= HvacTech2 =-


... "A friend of mine is in jail for counterfeiting pennies..."- s.w.

___ TagDude 0.92á+[DM]
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++
spam protection measure, Please remove the 33 to send e-mail

Thanks, friend. I shoulda read your message first. 717. How silly of me.

--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"HvacTech2" wrote in message
...


Hi OB, hope you are having a nice day

On 13-May-05 At About 06:30:28, OB wrote to All
Subject: Replacing 20-yr old Heat Pump

N From: "

N R22 is amonia, don't think it is outlawed as is R12???


R717 is ammonia, not R22.


-= HvacTech2 =-


... "A friend of mine is in jail for counterfeiting pennies..."- s.w.

___ TagDude 0.92á+[DM]
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++
spam protection measure, Please remove the 33 to send e-mail

I can't remember the R number for ammonia. 800 something. But, R-22 is hydro
chloro difluoro methane.

Of course, everyone remembers R12, which is dichlorodifluoromethane.

--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


" wrote in message
...
R22 is amonia, don't think it is outlawed as is R12???

Methane has four bonds to the carbon atom.

In the case of R22:
1) hydrogen
2) chlorine
3) Fluorine
4) Flourine

I think it's common usage not to mention the hydrogen, as they are assumed
to be part of the methane. In any case, there is a hydrogen, and I'm likely
mistaken to have mentioned it.

--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"HvacTech2" wrote in message
...


Hi Stormin, hope you are having a nice day

On 14-May-05 At About 01:03:02, Stormin Mormon wrote to All
Subject: Replacing 20-yr old Heat Pump

SM From: "Stormin Mormon"

SM I can't remember the R number for ammonia. 800 something. But, R-22
SM is hydro chloro difluoro methane.

R22 is chlorodifluoromethane. if it had water it would cause acid

-= HvacTech2 =-


... "A friend of mine is in jail for counterfeiting pennies..."- s.w.

___ TagDude 0.92á+[DM]
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++
spam protection measure, Please remove the 33 to send e-mail

Trane and Amer Standard are one and the same company. Top of the line
equipment. Price sounds awfully high but you don't mention efficiency
of the units so kind of hard to tell. If efficiency is in the 16 seer
range price should be about right. If any thing lower than that in
efficeincy price is toooo high.

DO NOT LET THEM USE R410A IN OLD COPPER LINES

Wether they are putting in 22 or 410 I would change the lines. You can
abandon the lines in the wall and have the new lines installed external of
the building, and then covered in a downspout.

--
Bob Pietrangelo


www.comfort-solution.biz
On Time or Your Service Call is FREE
Preventive Maintenance Specialist




"TT" wrote in message
.net...
It's still working after 20 years, but I just bought the house last year
and
want to replace entire 2 zone system before it dies. Three reputable
local
outfits have presented quotes (in 10-15K range) for a 3 ton and a 1.5 ton.
Of the three only one explicitly mentioned replacing the 20-year old R22
line sets with new, the other two said nothing about this. Since the
upstairs unit's plumbing runs inside walls the one man proposed an R22
unit
there, but the others want to use the new 410 refrigerant in the old lines
(I assume, since they proposed new newer refrigerant and din't say
anything
about running the lines up the side of the house hiding in downspout
camo).
Does this sound correct? I understand there's a significant pressure
differnece in the two line sets. Units proposed are Trane and American
Standard, replacing a Ruud system.
Thanks in advance for any good thoughts.

NoSpam,

R-22 IS NOT amonia. R-12 is NOT outlawed, just not allowed to make any
new R-12 in the USA. You can still buy R-12, about $25 to $30 per
pound, including tax. If you buy reclaimed refrigerant, R-12 is
cheaper. R-22 is still being made and equipment using it is still
being made. R-410a is at least 3 times more expensive at wholesale
level than R-22, but is slowly coming down in price.

Stretch