Hello,
The model I'm working on has instant electric water heaters, per 90.1 7.4.2 Equipment Efficiency, "Equipment not listed in Table 7.8 has no minimum performance requirements...

As per requirement G3.1.5(f) baseline, any existing envelope, the baseline building design shall reflect existing conditions prior to any revision.
What should i do if you dont know R-value...

For a LEED project that recently received the preliminary design review comments, we were asked to analyze and correct the documentation to comply with pre-requisite EAp2.

The problem...

We're looking at a building that will have approximately 10,000 sqft. of office space and 10,000 sqft. of warehouse space. Can this building pursue Option 2 and follow the Advanced Energy Design...

Hello,
I’m currently working on a LEED NCv2009 project located in Spain. My question is about the compliance of the section 10.4.1 (Electric Motors) of ASHRAE 90.1-2007. Should an European...

1) Assume the same scheduling is used in both design and baseline case, may I schedule lights to be off during occupied hours in a zone (both baseline and design models)?
2) Taking this a...

We have the project of to 250,000 sq ft. The Air conditioned area is only 50,000 sq.ft. The rest is enclosed unconditioned area (No HVAC) of 200,000 sq.ft. What area should we use to determined...

I have a new bubilding which will be mostly a performing arts theater and school gymnasium. Because these two spaces make up well over half of the building, my annual proccess energy costs are...

Hi,

We have a project where the Central Plant, consisting of a geothermal heat exchanger, is considered to provide energy to more buildings than the building seeking LEED certification....

A difficalt case: Radiant floor + Nat Vent
LEED increased ventilation credit requires that when using the macroscopic airflow simulation compliance path for naturally ventilated spaces:...