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For a project outside the U.S., how do I determine the Target Finder score?

Do hotel rooms need automatic light shut-off control?

How commonly are the 90.1 mandatory compliance forms submitted as part of EAp2/EAc1?

The Section 9 space-by-space method does not include residential space types. What should I use?

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Is it acceptable to model a split-type AC with inverter technology compressor as a heat pump, like modeling VRF?

Can the Trace 700 'LEED Energy Performance Summary Report' by uploaded to LEED Online in lieu of the Section 1.4 tables spreadsheet?

A portion of our building envelope is historic. Can we exclude it from our model?

Which baseline HVAC system do I use if my building has no heating or air conditioning?

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Our project has a large process load—75%. Despite our efforts to make an efficient HVAC design, the cost savings are minimal. What can we do to earn this prerequisite and be eligible for LEED certification? Is there any flexibility in how we model the p

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The project is built on a site with existing exterior lighting installed. How should this be accounted for?

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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Baseline HVAC system exceptions

Ritwik Kakati

Dagher Engineering, PLLC

LEEDuser Basic Member

0 thumbs up

August 20, 2014

I modeled a 10-story hotel building. Since the majority of space are hotel rooms, which are considered to be Residential spaces, the primary Baseline HVAC system type is System #1. Of course, there are the nonresidential spaces that exceed 20000 SF, so I modeled them with System #7. I received comments from USGBC reviewer to change the system type for IT rooms & corridors & other spaces to System #3 per G3.1.1 Exceptions b & c. My question is, since the primary HVAC system is System #1, and I'm already applying G3.1.1 Exception a to use System #7, do I have to apply Exceptions b & c on top of System #7? Thanks.

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Wed, 08/20/2014 - 21:29

Once you determined the predominant condition, residential, you subtract the area of residential from the total and reenter Table G3.1.1A. You then apply any exceptions to G3.1.1 that apply. You must apply these exceptions. They are not optional.

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