I am working on renovating a NYC historical building. per NYC Energy Conservation Code 101.4.2, this project is exempted from meeting the wattage allowance.

We are working on a project in Massachusetts, and I wanted to clarify what the Economizer High-Limit Shutoff requirement for Baseline case. All of Massachusetts is listed as Climate Zone 5.

We have a renovation project where the unrenovated space HVAC and lighting power are unknown.

Hi all, we are working in a project with 61.8% of the floor area for renovation and 38.1% is new construction.

Credit language requires using ASHRAE 90.1-2007 (or Title-24 2005 for California projects). Can we use Title-24 2008 instead of the Title-24 2005 version for v3 projects?

According to ASHRAE 90.1-2007 Table G3.1.5 (f) for existing building envelopes, the baseline building design shall reflect existing conditions prior to any revisions that are part of the scope of w

Dear Forum, If we do not want to show any energy savings associated with hot water pumps for domestic hot water system, Section G3.1-11 states that service water loads and usage shall be the same

Hi, As per reviewer comment the calculation for U-value of whole window assembly (including frame) used for the Proposed case windows can be demonstrated by different method such as NFRC rating, Wi

We have a building that consists of new, renovated and unrenovated area. We are using builidng area method for lighting power density.

Hello, Our project is connected to a utility steam network with a declining block utility rate, so as the building uses more steam the rate decreases.