Need help? Email our support team and an expert will get back to you, typically within 48 hours.
info@bigladdersoftware.comNeed help right away? Purchase a priority support session for faster assistance from our team.

We provide hourly support and training for EnergyPlus, helping with installation, modeling, HVAC systems, debugging, and best practices so you can work more efficiently and with confidence.

We provide hourly support and training for OpenStudio, helping with installation, workflows, measures, and troubleshooting so you can model more effectively and confidently.
Unmet Hours is a free, community-driven Q&A site where building energy modelers can ask questions, share expertise, and find answers on any modeling topic or tool.
We provide flexible, hourly support services for EnergyPlus and OpenStudio by phone and email. As licensed support providers for OpenStudio through the National Renewable Energy Laboratory, our team can help you troubleshoot, refine workflows, and get the most out of your modeling projects.
In addition, we proudly support and participate in Unmet Hours—the community-driven Q&A forum for building energy modeling. On Unmet Hours, you can ask questions about any modeling topic or software tool, and receive guidance from a wide network of experts. It’s a resource built by the community, for the community, and its success depends on your support and participation.
Help Center
Open Source
Community Forum
Resource Library
Webinars and Demos
Training Courses
News and More