Search Results - HVAC-Talk: Heating, Air & Refrigeration Discussion

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Type: Posts; User: kjones

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  1. Replies
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    Always thought that a gravity furnace was an...

    Always thought that a gravity furnace was an elegant engineering solution - no pumps, no fans, just hot air moving up and cold air moving down.

    But all those different-sized ducts, makes the...
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    Re: Logic

    Maybe THAT would work in Michigan! I suspect there would be some redesign to the ducts, though...

    I have seen some folks say that you can oversize the heat pump, either 50% or 100% depending on...
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    Hope the smoke clears soon. Still would like...

    Hope the smoke clears soon.

    Still would like to know what the book says about the estimated AFUE (not efficiency, eh?) for my 1953 vintage Premier GA150.

    KJ

    [Edited by kjones on 10-20-2005...
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    "Go back to your fourth grade math class. 125,000...

    "Go back to your fourth grade math class. 125,000 in and 100,00 out. Sounds like 80%."

    Wow, is it that simple?!? I've been waiting to hear that!That means my 50+ year old furnace that has a...
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    Hey Travis, as long as you have that guide book...

    Hey Travis, as long as you have that guide book dusted off, could you see what it says about a Premier GA150?

    Thanks,

    KJ
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    Dan, answers are below- Wyounger, I agree, 68...

    Dan, answers are below-

    Wyounger, I agree, 68 is way low for summer - will change to 76 giving new heat gain of 13750 sensible, 1900 latent. But might I need the extra tonnage to get the extra...
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    Design temps- 70F Winter, 68F Summer Cooling...

    Design temps- 70F Winter, 68F Summer

    Cooling load- 19,300 sensible & 2,700 latent

    Bin data- Mt Clemens is close enough, might be a bit warmer as we are on the edge of the metro detroit area...
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    Um... Is anyone out there? Did I say something...

    Um... Is anyone out there? Did I say something wrong?

    Guess I will start a new thread if I don't hear back...

    KJ
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    30- 34kbtu 35- 30kbtu 40- 26kbtu 45- 22kbtu ...

    30- 34kbtu
    35- 30kbtu
    40- 26kbtu
    45- 22kbtu

    Looking at the Carrier graph, the crossover (BTU req vs BTU output) is around 42 degrees for that 024 unit, and around 40 for the 030 unit (which may...
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    Hey DAN SW FL- here is the info: Heat pump...

    Hey DAN SW FL- here is the info:

    Heat pump model - I dunno, I'm not going for 'total comfort' here, I'm going for lowest cost of ownership over the life of the unit. I had figured something in the...
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    I am in Michigan, and am considering the same...

    I am in Michigan, and am considering the same type of system (gas/heat pump). BUT, how do you KNOW that a 90% will pay off over an 80% when the heat pump is supplying a large amount of the annual BTU...
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    Is there anything I missed here?

    Is there anything I missed here?
  13. Thread: Amana?

    by kjones
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    Well, I saaw another post that noted that an...

    Well, I saaw another post that noted that an obsolet Amana with a lifetime warranty was replaced with a brand new unit, while other vendors give out credits of something under $500 toward a new...
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    Couple of notes on those savings calculations. ...

    Couple of notes on those savings calculations.

    First off, Dan is right - you gotta get rid of fixed and other costs. For me I take $15 off the monthly gas bill, because that is the amount of my...
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    Okay julytza, here are the load reqs from...

    Okay julytza, here are the load reqs from HVAC-Calc at this time:

    56.840 BTU Heat Loss
    22,921 BTU Heat Gain

    Winter thermostat set at 70 during day, 65 at night.

    Re HVAC-Calc: I had used...
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    Hey julytza, I've "absorbed" the heat pump info...

    Hey julytza, I've "absorbed" the heat pump info you posted (not sure how much of it leaked out, though).

    I'm still trying to get a handle on how to figure operating costs, figuring out how often...
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    Hey jeep6275 & t527ed, thanks for the info on 90+...

    Hey jeep6275 & t527ed, thanks for the info on 90+ lifespans. That helps to offset the concerns about fan and circuitry problems - sure would be nice if all the companies would pony up a system on a...
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    Hey jultzya, would appreciate that heat pump cost...

    Hey jultzya, would appreciate that heat pump cost review!

    I'm in SE Michigan, 30 miles north of Detroit, 6569 heating degree days, 626 cooling degree days.

    My gas cost is $.96/CCF. Electric...
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    Okay folks, Mr. Consumer here. Remember the...

    Okay folks, Mr. Consumer here. Remember the original question, which was basically is the lifespan of a 90+% really 2/3 that of an 80%. The reasons were longer run times and "design characteristics",...
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    Well, this info came from a Michigan utility...

    Well, this info came from a Michigan utility company(http://my.dteenergy.com/home/savings/heatingFaq.do#q1). So perhaps they have accounted for our winters here, where snowmobiles replace dirt bikes...
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    Been doing some research/studying, and came...

    Been doing some research/studying, and came across this nugget on my local electric company'a website:

    "The average 80% standard oil or gas furnace lasts 18 years. Most high efficiency 90%+...
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    Can't say there is NO insulation - the ceiling...

    Can't say there is NO insulation - the ceiling had loose insulation between the rafters and I added 6' batting on top of that. Also, the original half of the house has a flat roof which is now...
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    Yup, nostalgic, that's me! 60% efficient to...

    Yup, nostalgic, that's me!

    60% efficient to 90+% should save me more than the 10-15% that the utility's calculator states, wouldn't you think?

    Guess I'll have to get a few bids and see if they...
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    Hey folks, got a situation to ponder on... ...

    Hey folks, got a situation to ponder on...

    I've been considering replacing my classic Premier 120000 BTU gas forced-air furnace with something a bit more modern. Haven't got any bids yet, but did...
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