We are doing a project which is being 10% retrofitted. The reviewer wants us to used the envelope values before retrofitting as baseline and the new envelope properties as the proposed project.

I am modeling a building that directs all building exhaust through an energy recovery ventilator, including bathroom exhaust.

Hi All, I am modelling a VRF system using ApacheHVAC in IES. But have no idea which prototype to choose.

Hi, I have a doubt on how to model the baseline HVAC system of a specific project, which consists of a 4-floor base building from which rise two tower with independent HVAC systems.

I know that I can take credit for automatic daylighting controls under the Performance Rating Method of Appendix G.

Greetings, In the project I'm modeling (C&S), I took the opportunity to use the CS 2009 EAp2-c1 ACP spreadsheet with integrated calculator. I've come to reach 46% of Energy cost influenced by C

USGBC released proposed updates to EAp2/EAc1 for LEED 2009, which at its most basic, requires a minimum 4 points under EAc1.

Does anyone know how the baseline Lighting Power Density should be set up if the space type is not listed on Table 9.6.1 of ASHRAE 90.1 using Space-by-space method?

How should a future process be taken into account?

Hi, Currently I'am working on a LEED Core & Shell mixed development project, and I have an issue on develop model regarding HVAC design.