Hello, I’m working in an office building in Bogotá, Colombia. The building has 11 gas instantaneous water heaters, with 48 kW capacity each.

In order to comply with LEED 2009 EA prerequisite 2 option 2, is it necessary to follow both daylighting recommendations in the Advanced Energy Design Guide climate zone 5 recommendation table, or

Dear LEED Users, Does anybody know if the minimum HVAC equipment efficiencies listed in Tables 6.8.1 of Standard 90.1 apply to the generator (i.e chiller, boiler, heat pump) or to the whole HVAC

the building size is mandating to model the baseline with a water cooled chiller and I will compare the baseline with the design which is using HVAC that is (air cooled chiller + ice storage + dive

We are having trouble verifying the efficiency compliance of mini-split air conditioners available in Brazil. They are rated in COP where ASHRAE requirements are stated in SCOP.

I'm trying to understand baseline exterior lighting versus the proposed. My calculations show that my proposed is less than my baseline, is this okay?

Dear All:- Our project have ventilation spaces only (No A/c spaces) so how we model these building in energy model As per LEED Missing manual we follow below things "Assign HVAC systems as per Ap

Dear All, In my project I am trying to reduce energy consumption, I am using LED lights, high efficient air cooled units (baseline is water cooled chillers). The building already is underground bu

This is a V4 doubt but I cant imagine anyone is monitoring the V4 forum so i decided that posting it here would be more effective. Does anyone know wether or not evaporator input power should be i

I am not sure that I am interpreting section G3.1.3.14 in the correct way.