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  1. Replies
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    What size furnace and AC is existing? Is there...

    What size furnace and AC is existing?

    Is there a reason not specing a high eff 95+eff condensing furnace?

    Why the 25% add on to your heating loss? Yes, I think the furnace is oversized too. But...
  2. Not normal. Trane claims a nominal db level at 55...

    Not normal. Trane claims a nominal db level at 55 for the XV18. This is not acceptable.

    What model thermostat and air handler do you have?

    How old is your system? Have you called installing...
  3. Replies
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    Don't get snookered on that true two stage...

    Don't get snookered on that true two stage thermostat. You will need a true two stage thermostat that controls demand rather than a control board timer or thermostat that operates off an algorithm...
  4. Replies
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    What size and efficiency is existing furnace? ...

    What size and efficiency is existing furnace?

    I assume furnace warranties are the same. I would want a two stage furnace no more than 60 KBTU size 95+% efficiency. I think you would be better off...
  5. Replies
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    You need a true 2 stage DF thermostat with...

    You need a true 2 stage DF thermostat with outdoor sensor and a tech who knows how to properly set up DF systems including lockouts and backup gas to temper air on defrost calls. A nice system...
  6. Replies
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    What is location? On a split system HP, you will...

    What is location? On a split system HP, you will be limited to a 1 1/2 ton condenser as the smallest size. In your case, correct sizing is way more important than sgl stage versus two stage...
  7. I believe the XL16i HP has been discontinued. Who...

    I believe the XL16i HP has been discontinued. Who told you this model was a communicating model?

    IMO
  8. Replies
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    The question that should be asked is the upgrade...

    The question that should be asked is the upgrade cost from same AC condenser model to the HP version condenser. Then weigh that cost difference against the operational savings of the heat pump...
  9. Replies
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    I would say your condenser and defrost feature...

    I would say your condenser and defrost feature should be checked. First demand defrost is supposed to greatly reduce if not eliminate unnecessary defrost calls. Are you seeing any frost and/or ice on...
  10. Replies
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    I believe the XP17 has demand defrost. Surprised...

    I believe the XP17 has demand defrost. Surprised OP would be having any defrost calls in low 30s but still possible. 10-15 seconds is a short defrost cycle. Outside conditions do matter. Suggest you...
  11. Replies
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    I assume you have an outdoor temp sensor...

    I assume you have an outdoor temp sensor connected to DF thermostat.

    This could be a defrost call where furnace comes on to temper cold AC air. If so perfectly normal operation.

    IMO
  12. Replies
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    I would not have the XB series condenser. Stick...

    I would not have the XB series condenser. Stick to the XR13 or XR15 series depending on your budget and SEER preference. Same available from AmStd.

    IMO
  13. Replies
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    TAM7 var speed air handler Hyperion XL Series...

    TAM7 var speed air handler

    Hyperion XL Series 7

    http://www.trane.com/residential/en/products/heating-and-cooling/air-handlers/hyperion-xl.html

    Air handler was listed above in previous post...
  14. Replies
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    Because Trane and AmStd have a better record of...

    Because Trane and AmStd have a better record of holding up and lasting longer in a harsh coastal environment. That's my opinion and perhaps others on this forum will agree or disagree.

    TD
  15. Replies
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    Since you live in a coastal environment, I would...

    Since you live in a coastal environment, I would want either Trane or sister company AmStandard.

    Here is a nice basic system.


    5593775 Active Systems TRANE XR13 TRANE 4TTR3024G1 ...
  16. Replies
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    Just so you know, that's a low end builder grade...

    Just so you know, that's a low end builder grade AC condenser made South of the border. I wouldn't have it. You see this all the time in new residential developments.

    IMO
  17. Replies
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    It's only money. The major differences between...

    It's only money. The major differences between the XR17 and XL18i are the proprietary condenser top and the extra 2 yr warranty on the compressor, from 10 yr to12 yr.

    Your decision not mine.

    IMO
  18. Replies
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    What size is your current heat strip? I...

    What size is your current heat strip?

    I suggest 20 KW is too large. I would drop to 15 KW and have it staged.

    IMO
  19. Replies
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    Based on your location, I would forget the DF and...

    Based on your location, I would forget the DF and HP idea.

    Where will furnaces be located?

    I think the idea of one large furnace without zoning system is a mistake.

    I believe you will be...
  20. Replies
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    What size heat strip has been quoted? You are...

    What size heat strip has been quoted?

    You are replacing a 3 1/2 ton system?

    How is your ductwork system? Adequate returns, good insulation, leaks?

    IMO
  21. Replies
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    Just on the equipment choices and assuming you...

    Just on the equipment choices and assuming you are sized correctly, I would want the first selection. You are in Maryland?


    7021410 Active Systems CARRIER AIR CONDITIONING PERFORMANCE SERIES...
  22. Replies
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    Not normal for sure. Cut off and go to straight...

    Not normal for sure. Cut off and go to straight emergency heat. Get installing dealer out ASAP.

    Report back.

    IMO
  23. 60 K 80%

    60 K 80%
  24. I don't understand the sizing either Trane or...

    I don't understand the sizing either Trane or Carrier quotes. Seem like oversized both furnace and condenser. Whether you want or need a DF system should depend on your rates, electric and nat gas. I...
  25. Don't make a move without a load calculation in...

    Don't make a move without a load calculation in hand from these dealers especially cooling.

    Ceiling ht?

    IMO
  26. It should be pointed out that the Carrier AC...

    It should be pointed out that the Carrier AC condenser is 2 ton 2 stage while the Lennox condenser is Sgl stage, don't know the size.

    What thermostats were quoted?

    What size is main floor and...
  27. 60 K might be tight depending on outside winter...

    60 K might be tight depending on outside winter temps. Plus what size AC do you have if any?

    2800 sq footage plus finished basement? Pls advise.

    IMO
  28. Replies
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    So to be clear, the XL624 controls furnace...

    So to be clear, the XL624 controls furnace staging based on demand not a timer or a software algorithm?

    What are the major differences between XL624 and HW Prestige 2.0?

    Thank you
  29. Replies
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    Trane XL624 Thermostat

    Is XL624 a true two stage heat thermostat that controls staging based on demand and not a timer or software algorithm?

    Furnace XV95

    If not a two stage thermostat what would you recommend other...
  30. Good choice Depending on cost/budget, you may...

    Good choice

    Depending on cost/budget, you may want to look at the XR15 for comparison.

    See below..

    5198250 Active Systems TRANE XR15 WEATHERTRON TRANE 4TWR5030G1 *AM7A0C36H31 1050 ...
  31. Replies
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    I will assume that summertime humidity is not an...

    I will assume that summertime humidity is not an issue for your location/climate.

    On furnace no higher than 60 KBTU with high eff blower. Suggest a model like single stage high eff Trane XT95 with...
  32. Replies
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    You have to be the judge as far as upgrade cost....

    You have to be the judge as far as upgrade cost. As long as you have the features below, I would not pay the upgrade cost. But that's me.

    Two major features that your thermostat must have is the...
  33. Replies
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    Assuming you install the correct thermostat like...

    Assuming you install the correct thermostat like HW Prestige 2.0 and dehumidify on demand is set up, I think this is more a question of the upgrade cost. You will have to be the judge on that.

    IMO
  34. The XV80 furnace is an 80% two stage var speed...

    The XV80 furnace is an 80% two stage var speed furnace. It requires a true 2 stage thermostat for best and full functionality. Also with the correct thermostat, the XV80 allows for dehumidify on...
  35. 3 level TH are notorious to heat and cool...

    3 level TH are notorious to heat and cool consistently from floor to floor.

    Get dealer to inspect ductwork system, you have adequate return on each level?

    My recommendation Trane
    XV80 furnace...
  36. Replies
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    I would also get an updated price on the 180 Mdl...

    I would also get an updated price on the 180 Mdl AC condenser. Has higher SEER than the 187.

    6864172 Active Systems BRYANT HEATING AND COOLING SYSTEMS EVOLUTION SERIES PURON AC BRYANT HEATING AND...
  37. Replies
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    That is not the matching number that I listed....

    That is not the matching number that I listed. You better double check yours. No listing on the number you provided.

    TD
  38. Replies
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    You can not get the qualifying EER standard on...

    You can not get the qualifying EER standard on the 189BNV condenser

    I would drop down to the 187BNA.


    7162016 Active Systems BRYANT HEATING AND COOLING SYSTEMS Evolution V Air...
  39. Replies
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    Sorry, not good enough. Need the complete model...

    Sorry, not good enough. Need the complete model number.

    I will also give you the 2 stage condenser numbers for comparison but need the evap coil Mdl number.

    Evolution control included in quote?...
  40. Replies
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    The matching evap coil determines both...

    The matching evap coil determines both performance/efficiency numbers.

    What coil was quoted? This sounds a bit suspicious.

    Post back and I will try to look this up on the AHRI directory.

    IMO
  41. Replies
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    Furnace is oversized...should be the 80 K model...

    Furnace is oversized...should be the 80 K model not the 100 K size. I would review the load calc. Oversize will hit your pocket in operating costs.

    Low end condenser. I would upgrade to the...
  42. What size and age of home? Home has nat gas...

    What size and age of home?

    Home has nat gas service now?

    Unless you have low electric rate, I would forget DF system.

    And forget the all electric Carrier Greenspeed system if you have nat...
  43. Agree with Baldie...these small living areas can...

    Agree with Baldie...these small living areas can be problematic for new HVAC...

    Biggest challenge is to be sized correctly and not oversize.

    IMO
  44. average winter temp for Austin above freezing but...

    average winter temp for Austin above freezing but known to get down in the teens and rare single digit...
  45. The issue on the furnace size is a good one and...

    The issue on the furnace size is a good one and should be pursued. Home is relatively small and for Austin cooling is probably more important than heating.

    I did a quick search on AHRI this...
  46. I was not aware of all these different model...

    I was not aware of all these different model numbers of the HW Prestige 2.0 and really don't have the time to research this. Perhaps other forum pros can help out on this.

    As far as the XT80...
  47. on the blower noise level, both will be much...

    on the blower noise level, both will be much quieter than what you have. Assuming you have properly sized ductwork system, I would expect the XV80 to be quieter than the XT80.

    Nothing significant...
  48. 6805905 Active Systems TRANE XR16 TRANE 4TTR6036B1...

    6805905 Active Systems TRANE XR16 TRANE 4TTR6036B1 4TXCB004CC3 885 *UD1B080G9H3 33600 13.00 16.00 1 RCU-A-CB 260

    6806027 Active Systems TRANE XR16 TRANE 4TTR6036B1 4TXCC044BC3 1020 ...
  49. First of all, I wouldn't fret over the very minor...

    First of all, I wouldn't fret over the very minor AC efficiency differences between the two systems you were quoted.

    You will get better comfort and savings off the XV80 furnace system. But you...
  50. Replies
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    Plus a low end cheap Rheem condenser made south...

    Plus a low end cheap Rheem condenser made south of the border...
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