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Estimating cost of future HVAC replacement

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Estimating cost of future HVAC replacement tadamsmar@yahoo.com 06-29-2008
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Posted by tadamsmar@yahoo.com on June 29, 2008, 5:06 pm
I am doing some retirement planning. I want to estimate the cost and
lifetime of my HVAC system.

I have central gas heat and ac. The is 2 story and about 2300 feet.
The house was built in 1991.

Also, I would like to do some planning for what to expect. How long
do they last?
I see from some other posts that they may want to replace all the duct
work. What should I look at to prepare to replace these systems. Can
I just replace the AC unit or gas furnace, only the part that fails?
Should I do that?

The upstairs unit is rarely used, only when we have company.

The downstairs outside AC unit is a TRANE XE 800 TTJ730A100B0.
Upstairs outside is TRANE XE 800 TTJ724A100B0. My web searchs have
not even turned up the tonnage of these.

Posted by Oren on June 29, 2008, 6:11 pm
On Sun, 29 Jun 2008 14:06:28 -0700 (PDT), "tadamsmar@yahoo.com"

>I am doing some retirement planning. I want to estimate the cost and
>lifetime of my HVAC system.
>
>I have central gas heat and ac. The is 2 story and about 2300 feet.
>The house was built in 1991.
>
>Also, I would like to do some planning for what to expect. How long
>do they last?
>I see from some other posts that they may want to replace all the duct
>work. What should I look at to prepare to replace these systems. Can
>I just replace the AC unit or gas furnace, only the part that fails?
>Should I do that?
>
>The upstairs unit is rarely used, only when we have company.
>
>The downstairs outside AC unit is a TRANE XE 800 TTJ730A100B0.
>Upstairs outside is TRANE XE 800 TTJ724A100B0. My web searchs have
>not even turned up the tonnage of these.

I think the guys in alt.HVAC (?) can help. Try that group.

Posted by Erma1ina on June 29, 2008, 6:54 pm


Oren wrote:
>
> I think the guys in alt.HVAC (?) can help. Try that group.

I hope you were being sarcastic. LOL.

To the OP: Don't waste your time with the psychotic burn-outs on
alt.hvac. For most HVAC-related questions, the Residential HVAC Forum on
the HVAC-Talk website is an excellent source of info. Here's the link:

http://hvac-talk.com/vbb/forumdisplay.php?forumid=1

At least you'll get a response from helpful HVAC professionals but, even
there, don't expect a lot of info on pricing.

Posted by tadamsmar@yahoo.com on June 30, 2008, 3:48 pm
> Oren wrote:
>
> > I think the guys in alt.HVAC (?) can help. Try that group.
>
> I hope you were being sarcastic. LOL.
>
> To the OP: Don't waste your time with the psychotic burn-outs on
> alt.hvac. For most HVAC-related questions, the Residential HVAC Forum on
> the HVAC-Talk website is an excellent source of info. Here's the link:
>
> http://hvac-talk.com/vbb/forumdisplay.php?forumid=3D1
>
> At least you'll get a response from helpful HVAC professionals but, even
> there, don't expect a lot of info on pricing.

It's against the posting rules at hvac-talk to even ask about pricing!

Did find something here:

http://www.oldhouseweb.com/stories/Detailed/268.shtml


Posted by HeyBub on June 29, 2008, 9:30 pm
tadamsmar@yahoo.com wrote:
> I am doing some retirement planning. I want to estimate the cost and
> lifetime of my HVAC system.
>
> I have central gas heat and ac. The is 2 story and about 2300 feet.
> The house was built in 1991.
>
> Also, I would like to do some planning for what to expect. How long
> do they last?
> I see from some other posts that they may want to replace all the duct
> work. What should I look at to prepare to replace these systems. Can
> I just replace the AC unit or gas furnace, only the part that fails?
> Should I do that?
>
> The upstairs unit is rarely used, only when we have company.
>
> The downstairs outside AC unit is a TRANE XE 800 TTJ730A100B0.
> Upstairs outside is TRANE XE 800 TTJ724A100B0. My web searchs have
> not even turned up the tonnage of these.

Instead of budgeting for AC replacement, budget for continued maintenance
for the entire building. Someday it'll need a new roof, or water heater, or
termite remediation, or something. Some amount put away each month - and I
have no clue as to the number - is a better planning tool. Retirement
advisors should be able to point you toward some resources.

Good luck.

P.S.
Ductwork is usually forever.



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