# A few questions for those in the know

Show 40 post(s) from this thread on one page
Page 3 of 4 First 1234 Last
• 10-09-2005, 03:50 PM
uncleblaine
Dan,
I'm getting lost in your calculations, but I have 21392 cubic feet in the house. I attempted to get my gas usage numbers from the online bill pay, but what I can access right now does not include Oct04-Feb05, which are going to be the ones that really count. I should be able to get them tomorrow during business hours and will post gas usage then.

I'm not sure if I'm ridiculously off on my load calc, or if the equipment is ridiculously off. It wouldn't be the first thing about the house that was half-a**ed.
• 10-09-2005, 07:26 PM
dash
Unit oversized ducting undersized,that's normally the case.Sad but true.
• 10-19-2005, 03:25 PM
uncleblaine
Gas usage in therms for the last year total 866. Based on the gas usage for no-heat months, I'd estimate about 20 therms are used for hot water each month. That leaves me 626 therms used on heat with my current 80 efficiency furnace.
626 Therms = 62,600,000 BTU

[edited to reflect correct efficiency numbers]

62,600,000 *.63 = 39,238,000 BTU into the house

To get 39,238,000 BTU with a 92 AFUE divide by .92 right?

That's 42,867,391 BTU

divided by 100,000 = 429 Therms. Or a savings of about 197 therms.

I definitely like these numbers better.

[Edited by uncleblaine on 10-20-2005 at 09:40 AM]
• 10-19-2005, 05:02 PM
tbox8098
Blaine,

I am currently working on finalizing your proposal, I will have it finished up tomorrow. I should be able to help with some of the additional questions when we get a chance to talk in a couple days.

Talk to you soon,

Travis
• 10-19-2005, 05:11 PM
uncleblaine
Quote:

Originally posted by tbox8098
Blaine,

I am currently working on finalizing your proposal, I will have it finished up tomorrow. I should be able to help with some of the additional questions when we get a chance to talk in a couple days.

Talk to you soon,

Travis

Hey, I was wondering what happened to you! ;) Even at a couple of days from now, you'll probably still be the first bid in hand.

Don't forget to add on for that placebo stat from the other thread. :D
• 10-19-2005, 05:28 PM
tbox8098
It takes a while to get the options put together. I will give you a call tomorrow.

Travis
• 10-19-2005, 05:38 PM
uncleblaine
Sounds good Travis. Use the cell number as before.

Thanks!
• 10-20-2005, 08:30 AM
tbox8098
equipment efficiencies
Blaine,

For your knowledge the furnace was only produced between 1972 and 1975 according the Preston's guide to furnaces, it also gives an estimated efficiency between 60.2 and 62.9% AFUE. The air conditioner wasproduced between 191987 and 1991 with a SEER rating between 9.2 and 9.4.

I hope this helps

Talk to you later,

Travis
• 10-20-2005, 09:34 AM
uncleblaine
Travis,
Thanks for that info! That makes me feel much better that I'm doing the right thing.
• 10-20-2005, 02:13 PM
kjones
Hey Travis, as long as you have that guide book dusted off, could you see what it says about a Premier GA150?

Thanks,

KJ
• 10-20-2005, 03:00 PM
troyorr
Go back to your fourth grade math class. 125,000 in and 100,00 out. Sounds like 80%.
• 10-20-2005, 03:08 PM
Noel Murdough
You don't know Dash. He'd recommend pet porcupines if Carrier branded them. ;)

I'll have to check the brand on this one.

Living in the boondocks, you have a lot of time on your hands......

Noel

http://www.imagewiz.net/usr/hvac1/24...y02sss__2_.jpg

http://www.imagewiz.net/usr/hvac1/24353_porky10s.JPG

http://www.imagewiz.net/usr/hvac1/24355_porky05.jpg

• 10-20-2005, 03:09 PM
tbox8098
And old furnaces never lose efficiency. Or do they?
Show 40 post(s) from this thread on one page
Page 3 of 4 First 1234 Last