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  1. Replies
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    Number and size of vents would be irrelevant....

    Number and size of vents would be irrelevant. Lets say you have 100 vents in the house that are 10X10, would that make it any better if you have a choke point at the furnace? Now lets say you have 10...
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    Fully depends on the filter and length of return...

    Fully depends on the filter and length of return duct(in equivalent foot length) I think a Honeywell F100 rates at 500 PM while others use only 300 FPM and yet Manual D Recomends 600-700 FPM for the...
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    At my company we use the 6K rule. Take the cost...

    At my company we use the 6K rule. Take the cost of the repair X the age of the unit and if it equals more than $6,000 then we recommend replacement.
    If it was R22 we would highly recommend...
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    A contractor would need to check static pressure...

    A contractor would need to check static pressure on the return, the supply and total static pressure. Most systems can't go over 1.0" of static and ideally lower is better.
    Here is a short answer...
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    SHH, don't tell about my E! News true confessions...

    SHH, don't tell about my E! News true confessions of a young HVAC Nerd TV show coming up. It talks all about my exciting life performing manuals J's and static pressure calculations.
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    While I agree on most I disagree a lot of the...

    While I agree on most I disagree a lot of the dehumidification in my area. I have a variable capacity system(also a VERY sealed home with HRV) and never hit over 50% RH at 74 degrees indoor. At my...
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    Thanks! I have not read it yet, just checked my...

    Thanks! I have not read it yet, just checked my portion for accuracy before it got published.
    I'm on the advisory board so I get quoted a lot and not to toot my own horn but was also awarded top 40...
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    We are currently on ESC but its getting a bit...

    We are currently on ESC but its getting a bit outdated for our size company(25 field techs) and does not have a lot of features we would like for marketing when our marketing budget is in the mid 6...
  9. Look at the WaterFurnace Synergy 3D, its a triple...

    Look at the WaterFurnace Synergy 3D, its a triple function unit so it can be used to heat water for the radiant floor, plus heat and cool air through a ducted air handler so you have cooling and...
  10. If possible go with the XV95 or S9V2 like bald...

    If possible go with the XV95 or S9V2 like bald loonie said, its a major upgrade over an XL95 furnace. If anything go to the XR13 AC and up to the XV95. That one SEER point isn't going to make as much...
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    Without any other knowledge besides new windows...

    Without any other knowledge besides new windows and new ductwork on 1700 sq feet it seems that 3.5 ton could be oversized and could be causing some of your issue. For the office or living rooms a...
  12. I can't see why you couldn't reuse them. Just...

    I can't see why you couldn't reuse them. Just reconnect into the pipe and flush out any possible contaminants. As for the loop being sized for a 7 ton and house now only need a 4 ton, we would need a...
  13. I don't know if they are bringing it up a ton. We...

    I don't know if they are bringing it up a ton. We have only done two with XV18 AC's, one was my house because I had an old XV18 2 ton sitting in my shop that was misordered, otherwise I would have...
  14. The S9V2 has a more advanced blower motor and...

    The S9V2 has a more advanced blower motor and controls, it also uses a more intuitive setup display, its easier to work on and has better diagnostics. The furnace is also 6" shorter. Realistically I...
  15. The S9V2 does work with the XV18 and 20 AC's,...

    The S9V2 does work with the XV18 and 20 AC's, just not the heat pumps, must use an XL850 with a BAY24 panel though and zoning does not work with it until the 1050 comes out.
  16. Its not just the benefits of communicating its...

    Its not just the benefits of communicating its more so that the benefits of the variable capacity systems need to communicate. I am a Trane dealer so I know the XV18 much better than the XP25, but...
  17. The XP25 variable capacity is a much better...

    The XP25 variable capacity is a much better system than 2 stage. I have the Trane XV18 in one of my homes and its incredible, which leads me to my next point, why did the Trane dealer not give an...
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    You say plumbing and heating like they are one in...

    You say plumbing and heating like they are one in the same lol.
    As an HVAC company we can only reconnect a water heater uses 18" flex lines, if they are 24" flex lines a plumber must do it. If we...
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    Wrong Climate :-) We just get rain, we are lucky...

    Wrong Climate :-) We just get rain, we are lucky if we get 4" of snow in an entire year here. Electrical is subbed out since we as an HVAC contractor can't run our own electrical, we can only...
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    Does that level have a return air? Unless you...

    Does that level have a return air? Unless you have a dampered off return air or no return air then your system is sucking in 90 degree air from that upper room and mixing it with the air from other...
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    Why are you setting rooms back to almost 90? Is...

    Why are you setting rooms back to almost 90? Is it for energy savings, if so don't waste your time, with your system it probably costs you more to set back these zones. I always let customers know...
  22. The Trane gets up to a 9.5 HSPF if installed in...

    The Trane gets up to a 9.5 HSPF if installed in an upflow configuration while the Rheem is 9.0 so the Trane can bit more efficient in that combination. Otherwise both are good systems.
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    I don't see much of an issue with either, I...

    I don't see much of an issue with either, I prefer Trane because that is what we sell but both are top rated brands so long as they are installed properly. Rheem doesn't quite have the depth of...
  24. Mini split hands down. They do not require backup...

    Mini split hands down. They do not require backup if you get the right unit, they have so many combinations now its insane. You could do a ducted full static air handler in the attic for the upper...
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    Good to hear!

    Good to hear!
  26. Wow, im going to be honest here, the length of...

    Wow, im going to be honest here, the length of your post is probably keeping a few key people from replying sooo. Here are the Cliffs notes for others
    4,200 sq foot home built in 1994 located in...
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    Then I would demand a third zone if its on the...

    Then I would demand a third zone if its on the contract regardless of how well its working or I would ask for a discount. But a third zone takes an extra thermostat, extra damper and an extra trunk...
  28. You said its a 9.5HSPF for the second unit then...

    You said its a 9.5HSPF for the second unit then you said its a 9 HSPF below for the same unit. Can you post actual AHRI numbers?
    With variable capacity(three stage) equipment its often hard to get...
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    That ductwork looks awful, where are the hanging...

    That ductwork looks awful, where are the hanging straps? Every box of flex I have seen says it needs to be supported every 4' or less and I see no support whatsoever.
    I don't think your requests are...
  30. The Trane XR16 is not a two stage unit, the XR17...

    The Trane XR16 is not a two stage unit, the XR17 is the Trane two stage XR product, the XL18i is also two stage and the XL20i is two compressor(but is phased out and in my market no longer available)...
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    Based on that home size a 4 ton could have...

    Based on that home size a 4 ton could have actually made the upstairs hotter. Just because you have 1 ton more of capacity does not mean it will go to the upstairs with those duct sizes, typically...
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    So why have you not called the installing...

    So why have you not called the installing contractor? You have an issue and this forum does not allow DIY anyway.
    Let us know what they do to fix it and what the error is.
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    A compressor generates waste heat. If your...

    A compressor generates waste heat. If your compressor is in the garage and heat is wasted going into a garage its better off going into water than an unheated unconditioned garage.
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    No thats incorrect, you will get hot water during...

    No thats incorrect, you will get hot water during the heating season.
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    Something is not right, during summer you should...

    Something is not right, during summer you should get almost 100% of your water heating from the hot water assist. Winter should be 30-50% which would be up to 100 degrees like you stated.
    Call the...
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    Stay away from the Nest, anything but that...

    Stay away from the Nest, anything but that thermostat.
    My wife and I have an air scrubber in our house and love it. I didn't put one in for the longest time since it seemed a bit weird, now I...
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    My understanding is that the only difference in...

    My understanding is that the only difference in the 950 and 1050 is that the 1050 has the nexia bridge which is currently a separate item for the 950 but included on the 824 and 850. Since BaldLoonie...
  38. A Manual J is not very easy to learn, this is why...

    A Manual J is not very easy to learn, this is why so many contractors don't do them, they don't know how. I am currently training a person in my office on how to do a manual J. I wrote my own...
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    Full disclosure, I am a Trane dealer, however if...

    Full disclosure, I am a Trane dealer, however if one dealer is offering a 5 year labor warranty that says a lot about them standing behind the systems they install(unless its a third party warranty)....
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    I would have to disagree with everything said...

    I would have to disagree with everything said here... but with a qualifier. When installed by a GOOD contractor there is little that can go wrong with the XV18/XV20 and XL950. We have only had one...
  41. Trane "said" they were releasing the XVS two...

    Trane "said" they were releasing the XVS two years ago with a 27.5 SEER efficiency but everything I have been told from Trane is that there is no release anytime soon. HVAC technology is becoming...
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    I dont' know these furnaces well, this was sent...

    I dont' know these furnaces well, this was sent to my service manager by a newer maintenance tech with no additional info. Hopefully will hear some soon.
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    Two furnaces installed inline WTF

    One of my techs just send me this from a customers home... Two furnaces stacked on top of each other and tons of stuff all heading to one common vent.
    I just don't know what to even think. I mean I...
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    Yup the Synergy 3D can do radiant hydronic with...

    Yup the Synergy 3D can do radiant hydronic with forced air heating and cooling and has a desuperheater option, its made by WaterFurnace. For domestic hot water thought you may want to consider a...
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    I have always heard a 10% failure rate in the...

    I have always heard a 10% failure rate in the first 10 years. Nobody that I know of claims a 1% failure rate.
    Thats awesome that 1,500 homes in a subdivision have geo though! Sucks with the issues,...
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    That is an XB furnace model, it does not have a...

    That is an XB furnace model, it does not have a high efficiency blower motor so it drops your air conditioner efficiency by 1.5 points. If he said you were going to get a TUD1C080A9H41B you should...
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    We are a Trane dealer and Trane used to run their...

    We are a Trane dealer and Trane used to run their warranty in house but stopped around 2012 or 2013. They now use a third party warranty that is damn near worthless.
    In the end the company should...
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    Our guys are very well compensated for their time...

    Our guys are very well compensated for their time and have all tools paid for by us and 100% of health insurance paid for by us and most drive brand new 2015/2016 vans.
    Our distributor offers...
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    Its not prying out at all, we offer 0% financing...

    Its not prying out at all, we offer 0% financing for 60 months on XV18 and XV20i systems. We offer a 5 year labor warranty with the standard parts warranty and we offer a 365 day money back...
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    Trane XV20i with Trane XC80

    Take a look... and listen to this video. It shows a Trane Xv20i installation and noise level at the unit outside running at 30% compressor speed(around 40% of capacity)
    ...
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