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  1. Replies
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    My sister is having a roof top gas/electric unit...

    My sister is having a roof top gas/electric unit replaced. She had a duct leakage test performed which shows 16.3% leakage (this surprised me, thought it would be much higher). The ductwork is 29...
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    Bigbird, thanks very much. I'm in Bakersfield...

    Bigbird, thanks very much. I'm in Bakersfield and am looking forward to see if the performance of the 90% VS furnace and a 556A 14 SEER AC unit will deliver the comfort and cost savings I hope for....
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    Bigbird, is this a current model? The Bryant...

    Bigbird, is this a current model? The Bryant website shows a 355AAV.

    Thanks
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    That's what I figured. Just wanted to make sure....

    That's what I figured. Just wanted to make sure.

    Thanks
  5. Replies
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    Just checking to see if the equipment installed...

    Just checking to see if the equipment installed is what I requested.

    Installed a Bryant 355MAV042060 and 355MAV060080 furnace. I just wanted to make sure these were variable speed units.

    Thanks
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    Gee, I hope "ho" stands for homeowner!!

    Gee, I hope "ho" stands for homeowner!!
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    Da, the AC units won't be installed for a couple...

    Da, the AC units won't be installed for a couple more months.
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    I'm aware that they are the company. My question...

    I'm aware that they are the company. My question had more to do with the practice of substituting equipment.

    From my reading, the specs on the Bryant and Carrier furnaces are pretty much the...
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    Rough in on new home completed this week. ...

    Rough in on new home completed this week.

    Furnace was supposed to be a Bryant 355MAV042060

    What I saw this morning in the attic was a Carrier label on the furnace. I'll call dealer on Monday...
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    I take it back. More funding just became...

    I take it back. More funding just became available. A 14 SEER unit with VS qualifies for $565 rebate. Now I'll have to check to see how much more a 16.5 SEER 2 stage Bryant would be. That would...
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    Just for higher SEER AC, nothing for heating as...

    Just for higher SEER AC, nothing for heating as far as I know. All the money is gone for this year. Usually runs out by sometime every summer.
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    I agree, but as a homeowner we don't lead, we...

    I agree, but as a homeowner we don't lead, we follow. I'm sure it will change locally. The local building activity has been so hot for so long that there may not be much incentive to do anything...
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    No mobile home. Just a hot dry climate with very...

    No mobile home. Just a hot dry climate with very mild winters.

    I am going with 2 stage furnaces and VS, but I'm still going to be oversized on heating.

    Thanks for some very interesting...
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    With all the natural gas price increases has...

    With all the natural gas price increases has anyone worked out a breakeven analysis on heat pumps versus gas furnaces? I live in California where, in the past, electricity prices have kept almost...
  15. I agree with edwards. This is a problem in many...

    I agree with edwards. This is a problem in many areas of business. I'ma CPA and just picked up an account where the client had been paying $40,000 per year for about $9,000 of service and wasn't...
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    Rough in begins next week on a new house. Bryant...

    Rough in begins next week on a new house. Bryant equipment (14 SEER AC, 95% VS furnace). My dealer does not have experience with Evolution controller. He proposes to install other Bryant...
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    Dash, would the wiring for the Evolution...

    Dash, would the wiring for the Evolution controller be any different than a regular thermostat? If not then I'll see about having the duct work and registers increased as you suggest and adding the...
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    dash, let's say I opt not to zone right now. ...

    dash, let's say I opt not to zone right now.

    There will be 2 split systems. One system will handle the middle living area. The second system will handle split wing bedroom areas. The...
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    Advanced and Dash, thanks for the responses. My...

    Advanced and Dash, thanks for the responses. My problem in this whole process has been that I educate myself on this site and then find it quite a challenge to find a local dealer who has the...
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    How would you compare zoning with the Evolution...

    How would you compare zoning with the Evolution controller and standard zoning?

    My dealer is recommending a 2 zone with a bypass. Does Evolution zoning use a bypass?
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    Robert, so the converse question is: How much of...

    Robert, so the converse question is: How much of the benefit of having a variable speed fan is lost without the Evolution control? If I have a VS furnace and a regulat controller am I losing out on...
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    Does the Evolution thermostat add value to a VS...

    Does the Evolution thermostat add value to a VS furnace (355MAV042060) and a single stage AC (556AN036)? Or do you need the 2 speed (or stage) AC in order to benefit from the Evolution controller?
    ...
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    When will these new styled cabinets be shipped?

    When will these new styled cabinets be shipped?
  24. Replies
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    Calfornia electric rates seem to prevent heat...

    Calfornia electric rates seem to prevent heat pumps from gaining any acceptance. If gas keeps getting higher I think they would become more popular.
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    Carnak, you may be right. In my area that means...

    Carnak, you may be right. In my area that means finding a mechanical engineer. I've probably talked to 10 HVAC dealers. Not one performs Manual J calc on new construction or remodels.
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    The problem here in Bakersfield CA is that we...

    The problem here in Bakersfield CA is that we have mild winters and hot dry summers. From everything I've read here it seems as thught to get the volume of air I need for cooling I will end up with...
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    wyounger, thanks for a very informative post. ...

    wyounger, thanks for a very informative post.

    I've had quite a journey deciding which configuration. I thought I had it all figured out and then my HVAC contractor said he didn't have time to do...
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    Mark, sensible was about 48K, latent about 8K...

    Mark, sensible was about 48K, latent about 8K (report at my office and I can't remember exact numbers).

    So you have found certain brands perform better than others even though they have same...
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    I was speaking to a local contractor today about...

    I was speaking to a local contractor today about a new home system. I prepared a manual J calculation which reflects about 56K BTUH (and I admit I raised the OS temperature and lowered the inside...
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    What is it that makes one unit a 12 SEER and...

    What is it that makes one unit a 12 SEER and another a 16 SEER? What is it that makes the difference?

    thanks
  31. Replies
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    Dash, I guess my post was not clear. I'm talking...

    Dash, I guess my post was not clear. I'm talking about 2 3 tons systems. Unit one would handle 2 bedroom zones on each side of the house. The other unit would handle the middle "daylight" living...
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    Split wing home with master bedroom on one side...

    Split wing home with master bedroom on one side of house, 2 bedrooms, laundry and bath on the other side, with entry, kitchen, dining, den and living room in the middle.

    Using 2 units the common...
  33. Replies
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    Dash, would that be "Yes" to a technical problem,...

    Dash, would that be "Yes" to a technical problem, "Yes" to lack of demand, or both?
  34. Replies
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    Doc, is there a technical reason that low furnace...

    Doc, is there a technical reason that low furnace output is not matched with higher air volume? Just not enough demand?
  35. Replies
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    Doc, it seems what I really need is a high...

    Doc, it seems what I really need is a high capacity fan and a low output burner and that doesn't seem to exist.

    Just for the fun of it, here are the calcs for my house (based on my input into HVAC...
  36. Replies
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    The reason I asked is that in my situation (mild...

    The reason I asked is that in my situation (mild winters) a single stage VS would be the ideal setup, but I coudn't find any on the manufacturer's website.

    On the non VS furnaces that have multi...
  37. Replies
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    Does anyone manufacture a single stage variable...

    Does anyone manufacture a single stage variable speed furnace?

    Thanks
  38. Replies
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    Bakersfield, CA Hot dry summers, mild winters.

    Bakersfield, CA Hot dry summers, mild winters.
  39. Replies
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    Rough in is next week and in our area right now...

    Rough in is next week and in our area right now it is quite a challenge to get a contractor to return a phone call.

    In the next few days I will have to decide to either go with the zoned system or...
  40. Replies
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    Doc, thanks for that answer. I'm now faced with...

    Doc, thanks for that answer. I'm now faced with deciding to stay with the zoned system with a significantly oversized furnace or opting for 2 split units. Even there I will be oversized but not as...
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    What are the fan speed options on variable speed...

    What are the fan speed options on variable speed furnaces, say the Trane XV90 or XV80? Can the unit be programmed to one range of fan speeds when cooling and another range when heating?

    Thanks
  42. Replies
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    I asked about a heat pump. It just doesn't seem...

    I asked about a heat pump. It just doesn't seem to be an option that is even considered in our area.
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    I was told that a 5 ton furnace was required to...

    I was told that a 5 ton furnace was required to handle the air for a 5 ton AC unit and that anything less would be a mismatched system. I believe the Trane rep said there was no ARI matched system...
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    Thanks, Doc. Based on your previous posts I...

    Thanks, Doc. Based on your previous posts I tried to get a Rheem/Ruud modulating furnace quote with no luck. Only Rheem/Ruud dealers in my area would not discuss zoning which is what I wanted.

    I...
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    Robo, thanks for the response. I did purchase...

    Robo, thanks for the response. I did purchase the program primarily because not one contractor that I spoke with did anything other than rule of thumb. Because I did the calc I was able to size...
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    Robo, thanks for the information. As far as time...

    Robo, thanks for the information. As far as time to heat the house and comfort, let's look at 2 units.

    The 90% unit reflects 74K on 1st stage and 112K on 2nd stage. The 80% unit reflects 62K and...
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    Just a week away from rough in on a new home. ...

    Just a week away from rough in on a new home. I've settled on equipment (almost) and configuration. I'm just going to post some comments as the process gets underway.

    I'm dealing with a rep...
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    Dan, it took awhile to get the Arnold S...

    Dan, it took awhile to get the Arnold S reference. Gee, you'd think I was totally disconnected from politics. Oh, I forgot, I am totally disconnected from almosy everything except getting this...
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    Panama, my concern with that approach is that at...

    Panama, my concern with that approach is that at this stage I won't have a contractor. Our area is going full tilt on construction and all trades are hard to come by.

    I'm going to try the...
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    Forgot to just ask a follow up question. What...

    Forgot to just ask a follow up question. What would be your reaction if a customer presented you with the 8 page document that Travis linked to?

    And as a recommendation for me, would you suggest...
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