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Old 11-07-2012, 04:05 PM   #31
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This same argument has gone on for years here. Yes there is a lot of merit to a manual J, yes there is also merit to 1000 installs under your belt etc. but the truth of the matter is people will buy for a variety of reasons, price is a factor, brand can be a factor, who impresses them with the most information can be a factor, but most people buy from who they feel that they can trust. Now if we could only be sure that those they trust would do a good job of the install.

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Old 11-07-2012, 05:07 PM   #32
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This same argument has gone on for years here. Yes there is a lot of merit to a manual J, yes there is also merit to 1000 installs under your belt etc. but the truth of the matter is people will buy for a variety of reasons, price is a factor, brand can be a factor, who impresses them with the most information can be a factor, but most people buy from who they feel that they can trust. Now if we could only be sure that those they trust would do a good job of the install.
LIke setting it up properly, checking the gas pressure to make sure it is not under or overfired. Check temp rise so it does not ride the limit control etc etc.
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Old 11-07-2012, 05:48 PM   #33
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So where do you go for new horse shoes and buggy wheels?????
I'll bet you set up oil burners by eye too.What a joke,maybe someone should welcome you to the twenty first century.
Actually I prefer the CB method. I see a 45,000 BTU furnace in your future. BwaHaHaHa
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Old 11-07-2012, 05:58 PM   #34
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well I may as well ***** alittle myself....went to a location to bid a furnace...i had already did 3-4 houses on same street 1 was the neighbor to the house i was bidding.....I was the only contractor to perform a manual j....2 others well known in the area bid also.....furnace was sized at 62,000 btu quoted 70,000 --95% .......after a week called to follow up...was told they were going with the other guy who was installing 90,000 95%....go figure.... the point to this disscussion ..some people will not take our word even if we do a proper sizing of equiptment......so you all stop fighting..ben sr

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Old 11-07-2012, 06:24 PM   #35
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not fighting..... just don't believe in a manual J.....
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Old 11-07-2012, 06:30 PM   #36
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not fighting..... just don't believe in a manual J.....

Do you believe in someone from old school??....You got be kidding.
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Old 11-07-2012, 06:42 PM   #37
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I am old...... old as dirt almost....
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Old 11-07-2012, 07:39 PM   #38
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and no I was not kidding......
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Old 12-05-2012, 09:00 AM   #39
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Hi all,

Thanks for the feedback and it sounds like this got pretty technical!

Wondering if I should spend the extra $$$ on a Carrier system vs a Goodman/KeepRite/etc.

I don't want to throw good money before bad, but if it's worth it I would definitely consider.

Any thoughts?

Thanks
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Old 12-05-2012, 09:38 AM   #40
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I used to be a fan of Goodman but have lost faith over the years as I see their stuff built cheaper and cheaper. I think York and Lennox have some nice products out there, Nordyne is another decent one.

Nordyne= Maytag, Fridgidaire, Westing house, Tappan, Broan and so on.
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Old 12-05-2012, 09:55 AM   #41
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With todays modern furnaces that can run at high and low output, and have multi speed blowers, it would seem to somewhat negate the need for an exactly sized furnace, as long as it is big enough to do the job. Is this a fair statement to make?
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Old 12-05-2012, 10:10 AM   #42
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If it is oversized then the blower will be too big for the ductwork. With an ECM motor the motor can only handle a certain amount of back pressure/resistance and then it will malfunction. With a conventional motor it will overload it.
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Old 12-05-2012, 12:48 PM   #43
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The multi stage furnaces are only rated at high fire. Lower fires have a 5 percent or greater loss in eff. on many models.
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Old 12-05-2012, 06:00 PM   #44
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Do any of you pros use HVAC Calc? It seems to be quite comprehensive.
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Old 12-05-2012, 08:08 PM   #45
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I asked the same question here some time ago and all I ever got from this forum was that the installer is the most important thing. I would really tend to think that this is true with a new furnace. I am not sure how true it is if you are doing a replacement. I asked the pros if any of them had ever used a micrometer to measure the wall thickness of the heat exchangers, since heat exchanger failure would tend to render a furnace irreparable. (Everything else is third party and replaceable) I got no answer. I did get responses that all of the furnaces that a typical homeowner can buy online are of lower quality, and lower grade than dealer only models. I asked about Carrier, which I currently own, and am quite happy with, and some techs said that today they are made like crap. So what I did was download brochures and looked at how they are laid out inside, vis a vis ease of access, ease of changing out parts if needed, general construction, and heat exchanger warranty. I now know which one I am going to buy, and I recommend you do the same. One thing I did find out, which is very disturbing, is that all of them are made exclusively from parts made in other countries, even if they are assembled here. They may be more efficient than the old furnaces, but they sure aren't built as well.

Furnaces have gone the way of everything else in this country. Door hinges are brass plated, not brass anymore, hence the black iron dust near your hinges. Your plumbing fixtures go bad in 5 years, and your door lock sets wear out in about the same. No4 pine is now labeled as No.2, and your bed wears out in three years instead of 12. Roof shingles are rated by the number of years they lie about them lasting instead of by how much they weigh.

We got what we asked for ChiCheeChinkCrap. Now we have to live with it, because all the good stuff is gone forever.

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