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NC-v4 EAc1:Enhanced commissioning

Test and balance

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Heather Holdridge
Sustainability Director
Lake|Flato Architects
LEEDuser Basic Member
78 thumbs up

I understand that there were not any requirements regarding TAB in LEED 2009 -- is this still true for v4?  Just want to confirm that there are no issues with having the balancer contracted under our construction manager.

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Dave Hubka
Practice Leader - Sustainability
EUA
LEEDuser Expert
510 thumbs up

Fri, 06/04/2021 - 18:50

LEED v4 does not have a contract language with respect to the balancing contractor and who they can/cannot be contracted through. 

Tue, 12/19/2023 - 21:10

Dave, Is there any language about the amount of TAB verification?  Like a percentage or something?
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Dave Hubka
Practice Leader - Sustainability
EUA
LEEDuser Expert
510 thumbs up

Tue, 12/19/2023 - 22:33

LEED does not go into that level of detail in regards to balancing.....but remembering back in my HVAC design days a long time ago, I never recall a project that 'sampled' the test and balancing. Every system level (e.g. air handling units) every zone level (e.g. variable air volume boxes) and every diffuser/fan/pump were included in the balancing.  Commissioning tends to sample 10% to 20% of all zone level equipment while commissioning all system level equipment. Commissioning Authority will probably spot check airflows at some of the diffusers/grilles.

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