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  1. Replies
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    I figured at least one person would say "always...

    I figured at least one person would say "always get matched/listed system."

    No real updates. I'm trying to figure out what I can get between XP21, XP20, XP16, EL296045 and SL98P070 without having...
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    Anyone?

    Anyone?
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    Another update, in case it matters, my duct sizes...

    Another update, in case it matters, my duct sizes are as follows:
    Main floor supply - 9"x20"
    2nd Level supply - 10"x16"
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    The more I thin about it, the more I want the...

    The more I thin about it, the more I want the system in the original post even though it is not AHRI listed. The issue doesn't seem to be a fitment issue because the EL296-045 has listing using the...
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    Yeah, I have an iComfort t-stat already. So I...

    Yeah, I have an iComfort t-stat already. So I would likely do iHarmony zoning if I go that route. Hence my dilemma of picking between 045 EL296 and the 070 SLP98V. The saving grace for the 070...
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    I also want the staging for zoning if I go for...

    I also want the staging for zoning if I go for it. I'm sure I could get by fine with the XP14 but I think 2-stage is my preference at this point. It is my only "luxury" choice I'm allowing for...
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    Sorry Dan, i'm not sure what you are trying to...

    Sorry Dan, i'm not sure what you are trying to say. I know my loads. I can give you more details if you are trying to figure something out. Also, I re-calculate my crossover point every time...
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    The heat pump is to qualify for lower electric...

    The heat pump is to qualify for lower electric rates and heat if electric rates go down or NG rates go up and the 96/98% furnace is to save money on heating costs and provide a better sealed home...
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    You make some great points. The 045 is a match...

    You make some great points. The 045 is a match for 2-ton HPs with EVERY other model, just not the XP16. It is crazy and makes no sense to me.

    Your XP20 comment is what I needed to know. I don't...
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    So should I go to an XP20 2-ton heat pump? ...

    So should I go to an XP20 2-ton heat pump?

    The other option is to keep XP16 and change the furnace to the SLP98V. The smallest size for this is 66K btuh. Yes, it can modulate down to 22k but...
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    Need help selecting Lennox equipment

    So long story short, my builder/HVAC installed the wrong size system and are willing to install properly sized equipment but are making me specify the equipment to wash their hands of any...
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    I need to measure my main supply ducts to see how...

    I need to measure my main supply ducts to see how they are sized.

    Anyone got any data on communicating zoning systems?
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    Dan, 8) I realize zoning systems are for the...

    Dan,

    8) I realize zoning systems are for the most part discrete I/O. Things are on/off or open/closed. There isn't much use for in between. I think iHarmony utilizes communicating (i think...
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    I don't really want zones. I want consistent...

    I don't really want zones. I want consistent temperatures on all levels.

    I'm not interested in calling a professional in until I know more about the technology. I don't want to waste a pros...
  15. New manual J shows 40,000 heat load. Awesome. ...

    New manual J shows 40,000 heat load. Awesome. Now the choice is easy.
  16. So the Manual J looks like it is calling for...

    So the Manual J looks like it is calling for around 48k BTUh for heating load. The smallest Lennox furnace is 42k BTUh output and the next step up is 62k hi/41k low.

    Should I go with the 42k...
  17. In an unexpected move my builder asked me what...

    In an unexpected move my builder asked me what equipment (furnace, heat pump, coil) do I want installed. I assume he meant from Lennox, still. I'm open to any suggestions. I hope to zone and...
  18. The system is holding humidity down to 41% but...

    The system is holding humidity down to 41% but that is do to all the control features that are supposed to help at cooler outside temps. The inefficiency is what bothers me the most.
  19. This is not looking good for me. The HVAC...

    This is not looking good for me. The HVAC contractor first tried to convince me that a Manual J is not necessary and then they told me that they "would never want my system to run all the time right...
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    Zoning Questions...

    I'm trying to research zoning technology and I'm not finding much out there as far as details go. I was hoping some on here might be up for a discussion on the topic. So here goes:

    Is zoning a...
  21. I will bring those up. I emailed them to my...

    I will bring those up. I emailed them to my builder to have them forwarded to the HVAC guy since I didn't have the HVAC email address. I'm really hoping it pushes one of them to do a manual-j...
  22. HVAC contractor comes out tomorrow. I don't think...

    HVAC contractor comes out tomorrow. I don't think Lennox will be with them at this point. Anything I should be sure to ask about?
  23. at least with the VS blowers you can cut CFMs for...

    at least with the VS blowers you can cut CFMs for dehumidification easy. That combined with the 2-stage of my currently oversized system has been the only reason the humidity is under control...
  24. I don't have zoning, yet. I'm trying to look...

    I don't have zoning, yet. I'm trying to look into it but it is highly confusing to me as the control scheme is completely different than when using just a single t-stat (especially staging).

    The...
  25. If I am lucky enough to end up with a unit this...

    If I am lucky enough to end up with a unit this small, how does that affect single stage vs 2-stage equipment? Will there still be plenty of benefit from going 2-stage?

    How do smaller units...
  26. Now I'm worried about the duct work. can supply...

    Now I'm worried about the duct work. can supply duct work be too big?
  27. The single hung windows are U-Value: 0.25...

    The single hung windows are
    U-Value: 0.25 (with EnergyMax)
    R-Value: 4.00 (with EnergyMax)
    Solar Heat Gain Co-Efficient: 0.21 (with EnergyMax)
    Performance Rating: R-35

    The picture windows...
  28. Thank you so much Ikapigian. I'm amazed how...

    Thank you so much Ikapigian. I'm amazed how close these numbers are to my real world measurements. Quite amazing given all the assumptions you had to make.

    I noticed you used R13 for the 2x4...
  29. Email has been sent. Thank you very much!

    Email has been sent. Thank you very much!
  30. OK, you are pulling the right strings and pushing...

    OK, you are pulling the right strings and pushing my OCD buttons. I will gather the data and provide it to you. Other than exterior wall dimensions, window sizes and locations, what else do you...
  31. They only let me see drawings for review but...

    They only let me see drawings for review but would not give me copies. My builder is reputable. I hope he just steps up and admits the mistake and gets it all done.

    I appreciate the offer. I...
  32. They only let me see drawings for review but...

    They only let me see drawings for review but would not give me copies. My builder is reputable. I hope he just steps up and admits the mistake and gets it all done.

    I appreciate the offer. I...
  33. I'm just mad because my builder told me a manual...

    I'm just mad because my builder told me a manual j was done during the building process. I thought I had covered my basis with all this. I even told them I wasn't happy when the 4-ton was installed...
  34. You are pretty well spot on. - Front door...

    You are pretty well spot on.

    - Front door faces south but with a covered porch.
    - Back (lots of windows) faces north and half is under the cover for the covered patio.
    - Only 3 small decorative...
  35. Correct. Furnace is in the basement with the...

    Correct. Furnace is in the basement with the inside coil. I'm not in a desert climate, though. I'm in Kansas City. We have humid weather at times.

    I think 3 ton might even be too much for my...
  36. Builder/HVAC Installer/Lennox dispute, looking for guidance

    I'm getting ready to undergo what I fear will be a highly frustrating endeavor for myself that will involve all the parties listed in the subject. Here is background information:

    - Built new...
  37. Replies
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    Those high and low heating numbers are just 2nd...

    Those high and low heating numbers are just 2nd stage heat at different outdoor ambient temperatures. Read the footnotes. It confused me at first too.
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    1) Yes, I did. I had the document already but...

    1) Yes, I did. I had the document already but looked in the wrong section. I'm used to seeing a spec table with values and never read the compressor section to see the "67%" statement.
    2) Yes, the...
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    I'm a bit ignorant on this topic as you can tell....

    I'm a bit ignorant on this topic as you can tell. How would there be any difference in noise? Stage 1 will have the same CFM from the blower with either t-stat, correct?

    I am assuming that...
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    Does this matter since the heat-pump only has 2...

    Does this matter since the heat-pump only has 2 discrete stages? The ductwork is oversized in order to accomodate zones using single stage equipment if necessary (according to HVAC installer).
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    Questions on Lennox XP16 and Zoning...

    Question 1:

    I have looked and looked and I cannot find what the output ratings of the low stages are for this heat pump. Only high output rating for cooling and heating(at 2 different temps) are...
  42. Lennox iComfort WiFi T-stat and Dual Fuel setup

    My setup is the following:
    EL296V furnace (communicating, 2-stage)
    XP16 (non-communication, 2-stage)
    iComfort WiFi t-stat

    This system is installed in my current home. I was just reading the...
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    Just an update, ended up choosing the following...

    Just an update, ended up choosing the following equipment:
    - EL296V 2-stage 96% ECM furnace
    - XP16 2-stage Heat Pump
    - iComfort t-stat (wifi version)
    - aprilaire 600 bypass humidifier
    - HRV...
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    There are not many if any contractors around here...

    There are not many if any contractors around here that have expertise with that setup and they charge and arm and leg if you even bring it up. I think most everyone on here is familiar with what you...
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    with the only flue being the water heater, I'm...

    with the only flue being the water heater, I'm hoping that infiltration isn't a problem. We hit temps over 105F and below -5F. I went with the 95% furnace almost exclusively to help control the...
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    What kind of blower door test numbers would...

    What kind of blower door test numbers would indicate the need for HRV/ERV? Which would be better suited for my climate? Maybe I do need one.
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    I don't think our budget would allow for split...

    I don't think our budget would allow for split units. I think that is a several thousand $ adder. That does seem preferable though.

    As for ventilation there are no plans for anything extra. ...
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    New House Build - HVAC Choices...

    Been a long time since I have been on this forum. I'm getting ready to build a new house as follows:
    - 2-story, south facing (Kansas City)
    - 2300 sq ft total on upper two levels
    - 1200 sq ft...
  49. Options for 80% NG Furnace Comfort Improvement...

    I have an 80% NG furnace in an unfinished part of my basement. It is up against a wall it shares with the garage and directly across from it is an exterior wall. To the left side is a foundation...
  50. Since no one else has stated the obvious, I guess...

    Since no one else has stated the obvious, I guess I will...

    Those pictures don't really mean much in regards to the life of the filter. The only way to truly know if the filters are at the end is...
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