Question-and-Answer Resource for the Building Energy Modeling Community

Get started with the Help page

Revision history [back]

BeOpt energy models - ACH

I'm running models comparing 2018 energy code to 2024 energy code and noticed that when i reduce air changes per hour from 5 to 3, BeOpt actually says the energy costs go up. This happens when i leave every other option the same and ONLY change the ACH from one model to the other. Can anyone explain why reducing the air leakage would cause increased costs? or is there an error in the program?

Thanks!

BeOpt energy models - ACH

I'm running models comparing 2018 energy code to 2024 energy code and noticed that when i reduce air changes per hour from 5 to 3, BeOpt actually says the energy costs go up. This happens when i leave every other option the same and ONLY change the ACH from one model to the other. Can anyone explain why reducing the air leakage would cause increased costs? or is there an error in the program?

Thanks!

Site design and logo: Copyright © 2015 Big Ladder Software LLC. All rights reserved.
The Unmet Hours and Big Ladder names and logos are trademarks of Big Ladder Software LLC.
User contributions licensed under the Creative Commons Attribution Share Alike 3.0 License.

Powered by