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  1. #1
    Join Date
    Jul 2008
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    5

    Have "down flow" furnace--is modulating gas furnace ok?

    I have 2 estimates so far. 1 is for York Affinity 80% efficiency modulating gas furnace and Latitude 80% single speed. The other is for Goodman 80% single speed and he told me a "2 stage" is not available for me because I have a"down flow" furnace system.
    This is still confusing to me. Is a "2 stage" the same as a "modulating"? Any suggestions or explanations?

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,876
    2 stage is not a modulating furnace.
    The York mod has 65 steps of modulation.(or 65 stages)
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  3. #3
    Join Date
    Jan 2005
    Location
    USA
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    1,449
    If you can afford it get a furnace with an efficiency higher than 80% otherwise you throw away an extra 10% on you utility bills. Also IMO honeywell visionpro 8000 thermostat and depending on where you live the one with humidity control for winter(and a humidifier). Some people here like Goodman so I willnot give my op on them but if you do go with Goodman(or any other brand for that matter) be sure it is purchased from a local dealer otherwise you may have warranty nightmares
    "It's always controls"

  4. #4
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
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    34,052
    York has a Mod in 80% now?

  5. #5
    Join Date
    Jan 2004
    Location
    Lancaster PA
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    Quote Originally Posted by BaldLoonie View Post
    York has a Mod in 80% now?
    LOL..
    Yes they do.
    It doesn't make sense to me.
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  6. #6
    Join Date
    May 2007
    Location
    DC Metro Area (MD)
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    3,371
    Quote Originally Posted by beenthere View Post
    LOL..
    Yes they do.
    It doesn't make sense to me.
    I thought you were joking, until I actually checked myself! That's interesting...

  7. #7
    Join Date
    Jan 2004
    Location
    Lancaster PA
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    67,876
    If I was jiking, I would have put a smiley in the post.

    Its a comfort unit. But I just don't see a bug market for it.

    Od course, I could be wrong.
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  8. #8
    Join Date
    Mar 2008
    Location
    Central Maryland
    Posts
    246
    Quote Originally Posted by liborn View Post
    I have 2 estimates so far. 1 is for York Affinity 80% efficiency modulating gas furnace and Latitude 80% single speed. The other is for Goodman 80% single speed and he told me a "2 stage" is not available for me because I have a"down flow" furnace system.
    This is still confusing to me. Is a "2 stage" the same as a "modulating"? Any suggestions or explanations?
    There is no rule that forbids 2 stage or modulating in a downflow. However not every manufacturer makes every combination of orientation versus feature.

    If you can't get what you want in York or Goodman, try Ruud/Rheem, their modulating furnace is available in downflow. I have the (essentially identical) upflow version and am quite pleased with it.

    -HF

  9. #9
    Join Date
    Jan 2005
    Location
    USA
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    1,449
    Quote Originally Posted by beenthere View Post
    If I was jiking, I would have put a smiley in the post.

    Its a comfort unit. But I just don't see a bug market for it.

    Od course, I could be wrong.
    Spend extra cash and get no added efficiency, WHY.
    "It's always controls"

  10. #10
    Join Date
    Jan 2004
    Location
    Lancaster PA
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    Its for comfort.

    You don't get better efficiency from a mod. York has 95% efficiecnt 2 stage, and a 95% mod.
    The mod is just for increased comfort.
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  11. #11
    Join Date
    Mar 2005
    Location
    reading PA
    Posts
    20
    Quote Originally Posted by beenthere View Post
    Its for comfort.

    You don't get better efficiency from a mod. York has 95% efficiecnt 2 stage, and a 95% mod.
    The mod is just for increased comfort.
    increased pain in the ass! really i think that modulating furnaces may catch on, but they like every modern geothermal hp i see, are extremely over engineered!!! seriously 300-600$ control boards?...not to mention how much vs motors cost! i ve installed/serviced only a few(thankfully) of these units and really,.. its confusing.also depending on the install,new construction vs. retrofit,(even though the whole comfort thing is the main selling point) setting them up is a vague process. in my opinion a two stage 95+ furnace is the way to go. especially with an hp!

  12. #12
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,052
    The board for Rheem's Mod costs us 10% more than the board for a single stage Carrier 80/90. The modulating gas valve isn't that pricey, nor is the 2 speed inducer. Otherwise just the ECM motor like any high end furnace and the usual furnace components. Be sure to put an extended warranty on it, just like you should any furnace sale. They are all troublesome these days.

  13. #13
    Join Date
    Jan 2004
    Location
    Lancaster PA
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    67,876
    Edit out your board prices.

    The board for the VS mod isn't that expensive.
    The board for the Multispeed mod is a littler more expensive.

    Currently, there isn't a York mod installed that the boards aren't under warranty.

    Set up is straight forward.
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