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  1. #14
    Join Date
    Feb 2008
    Location
    Colorado
    Posts
    39
    Post Likes
    I am bidding a Rheem split system against a competitor that is using Designstar. The house is 3000sf with half the house being basement of 1500sf. We are in Colorado at 7000ft, with humidity in the low 20s. We usually don't count the basement because it doesn't add much of a load. He shows the main level at needing a four ton system. I keep telling the owner that that is way to big
    here! The Regional Bldg department only takes Wrightsoft and one other for serious designs in my area.

    Anyone have any recomendations on a good/accurate manual J program that will run on an ipad 4?

  2. #15
    Join Date
    Mar 2006
    Location
    Denver/Boulder
    Posts
    2,685
    Post Likes
    regional building dept? where are you?

    In my opinion I think they pretty mutch have to take any ACCA approved software (I think there are 5 now)

    Elite and wrightsoft are both solid for anything you want to do.

    there is a lot of buzz about aditek/ Accuload as being very fast but I get some indication that it might skip some of the finer points of load calcs. Personally, I give zero points for speed and everything towards accurate results. sloppy costs money and ticks people off!


    PS- at that altitude you really need to watch your combustion on every system. I hope you are well trained in combustion analysis.
    What lies behind us and what lies before us are small matters compared to what lies within us.


    Two pressures, four temperatures = SUCCESS!


    Boulder Heating Contractor


    For Consumers:

    For HVACR Professionals:


  3. #16
    Join Date
    Feb 2008
    Location
    Colorado
    Posts
    39
    Post Likes
    darctangent, I am in Colo Spgs. I ended up getting the Wrightsoft, Wright-J Mobil, and will graduate to the Wright-Suite Universal in

    a month or so. We usually end up setting the gas pressure between 3.0 and 3.5, keeping in mind the temp rise. What are you finding

    in Boulder?

  4. #17
    Join Date
    Aug 2001
    Location
    Pavilion, NY
    Posts
    3,151
    Post Likes
    That is one busy uncle
    ...

  5. #18
    Join Date
    Sep 2009
    Location
    Marietta, GA
    Posts
    1,289
    Post Likes
    Thread Starter
    Quote Originally Posted by kangaroogod View Post
    That is one busy uncle
    ROFLLLLL!!! Sorry Kangaroo, my uncle left me hanging! I got him all the info and I helped him get setup. ( what way to show appreciation from his side) He told me he would give me his login to check it out and he just didnt do it in the end. I asked a few other times and since he didnt give me any lift... I just left it alone. But since you brought this back up. I am going to go and try to open a account with gemaire and then I should be able to access RheemStar program as the lady I spoke to who helps get the program only requires we have an account with them. I just wonder if my EPA maybe enough to open just a basic cash account or my certificates from school. I will find out tomorrow and keep you posted.

  6. #19
    Join Date
    Jul 2017
    Posts
    2
    Post Likes

    Design Star

    Quote Originally Posted by mofotech View Post
    Have any of you guys been using the Rheem Designstar software for Heat Loss and Heat Gain Calculation? How is it and how accurate is the calculation? Is the calculation accepted well at your local building code offices? I am doing some research for my uncle who is a mechanical contractor in south florida. Another option my instructor at school told me is the software by Wrightsoft Right-J. I have also seen and used before hvac-calc 4.0. The county building code offices are really tighten up the belt when pulling permits. They require now a load calculation which they didn't do before. LOL, its a bit hard for my uncle to chew and swallow as he was old school and would always say 400sqt per ton. LOLLLL

    Any feedback would be appreciated
    Last week my Manager road with me and we did side by side load calcs. I was and currently still using Manual J which does take a bit longer. She used Designstar, numbers were dead on. I am looking for some help navigating the design Star program especially for two or three floor homes.

  7. #20
    Join Date
    Jun 2017
    Location
    Marionville, Missouri
    Posts
    32
    Post Likes
    I use design star exclusively. It is based on Wrightsoft and is part of the Wright Roadshow mobile suite, just badged up with Ruud/Rheem.

    I've found it to be Very accurate, as long as you adjust the defaults to give the software accurate information. As with any design, garbage in, garbage out.


    Sent from my iPhone using Tapatalk

  8. #21
    Join Date
    Mar 2006
    Location
    Denver/Boulder
    Posts
    2,685
    Post Likes
    Mark2009 and raseri, what is your connection to design star, or Rheem design star?

  9. #22
    Join Date
    Jun 2017
    Location
    Marionville, Missouri
    Posts
    32
    Post Likes
    Quote Originally Posted by darctangent View Post
    Mark2009 and raseri, what is your connection to design star, or Rheem design star?

    My company is a Ruud dealer, and I do all of our design and sales.


    Sent from my iPhone using Tapatalk

  10. #23
    Join Date
    Jun 2017
    Location
    Marionville, Missouri
    Posts
    32
    Post Likes
    Quote Originally Posted by Raseri View Post
    My company is a Ruud dealer, and I do all of our design and sales.


    Sent from my iPhone using Tapatalk
    To add to the original question, my location has no requirement for a Manual J, which leads to a lot of under performing systems, but our local utilities will accept DesignStar reports for any applicable rebates for equipment above 15 Seer.

    Sent from my Acer Chromebook R13 (CB5-312T) using Tapatalk

  11. #24
    Join Date
    Jul 2017
    Posts
    2
    Post Likes

    Design star

    Quote Originally Posted by darctangent View Post
    Mark2009 and raseri, what is your connection to design star, or Rheem design star?
    I am a Comfort Consultant and use load calculations on every quote I do. I have no connection other than we sell Rheem products

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