I'm modeling a commercial building that has 7 conditioned floors and is heated and cooled by 3 electric heat pumps. According to TABLE G3.1.1A the baseline model should be a System 8.

The project is located in Europe and standard EN 15251 is considered for the achievement of this prerequisite.

The project is located in Europe and standard EN 15251 is considered for the achievement of this prerequisite.

In a building that is being refurbished some windows are removed and are replaced with opaque panels. How shall they be considered in the baseline model?

Good afternoon, we're certifying a building that is 10% retail, 10% offices and 80% residential.

Dear all,

Please, could someone explain me in further detail how to proceed with the FAR calculation? 

ASHRAE 90.1 states:

G3.1.3.6 Piping Losses losses shall not be modeled in either the proposed or baseline
building designs for hot water, chilled water, or steam piping.

Dear all,

I am not quite sure the approach we're using in a zero lot line project is correct to achieve this credit and would like to have your opinion.

In the proposed system service hot water is heated in a water tank that is heated by a hot water loop that is connected with a gas boiler.

Hi,

I have a question concerning  requirements of section 5.4.3.4 of ASHRAE 90.1-2007.