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ASHRAE 62.1 filter requirement "minimum volumetric ozone removal efficiency of 40% filter"

NC-v4 EQp1:Minimum indoor air quality performance
posted by  John Covello  on 

I am researching HVAC filter manufacturers and none so far seem to be able to provide me documentation for a carbon filter that meet the minimum volumetric ozone removal efficiency of 40%.

0
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ASHRAE 62.1 requirement minimum volumetric ozone removal efficiency of 40% filter

CI-v4 EQp1:Minimum indoor air quality performance
posted by  John Covello  on 

Hello,

0

Stormwater Treatment Offsite by Municipality

NC-v4 WEp1:Outdoor water use reduction
posted by  Maya Facciolo  on 

Our project is located within the Fresno Metropolitan Flood Control District (FMFCD) in California, which provides regional stormwater treatment and discourages on-site water quality treatment.

0
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Luminaries inside parking cover are exterior lightings?

NC-v4 SSc6:Light pollution reduction
posted by  Thomas Tan  on 

Dear All,

I have a large parking structure (on grade) located inside the project site.

2
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Heather DeGrella
Sustainable Design Director, Associate Principal
Opsis Architecture
LEEDuser Premium Member
54 thumbs up
Wed Jan 14, 2026, 8:20 pm

REACH compliance

NC-v4 MRc4:Building product disclosure and optimization - material ingredients
posted by  Charline SEYTIER  on 

Hello,

11
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Tristan Roberts
Founder & Community Director
Metricorps
LEEDuser Expert
7782 thumbs up
Mon Jan 12, 2026, 5:34 pm
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EQ CREDIT: INTERIOR LIGHTING

NC-v4 EQc6:Interior lighting
posted by  Philipp La  on 

Hi Every one

6
Mon Jan 12, 2026, 4:10 pm
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Change to CxA Scope

NC-v4 EAp1:Fundamental commissioning and verification
posted by  Adrienne Franz  on 

Hello,

0
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LEED v4.0 Energy Model: How to Handle Unknown (Central Plant) Equipment Data for Tenant Fit-Out?

CI-v4 EAc2:Optimize energy performance
posted by     on 

I’m working as an energy modeler on a 3‑floor office fit‑out within a 42‑story building in New York City (LEED v4.0).

1
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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4461 thumbs up
Wed Jan 7, 2026, 7:32 pm
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Staff-Only Collection in Hotel Guest Floors

Hospitality-NC-v4 MRp1:Storage and collection of recyclables
posted by  Amgad Khattab  on 

We are pursuing LEED BD+C: Hospitality certification and have a question regarding the Storage and Collection of Recyclables prerequisite.

0
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INpc 137 Safety First: Cleaning your space for emerging pathogens

NC-v4 INc1:Innovation
posted by  Beth Brownlie  on 

What are some other testing strips that are readily available to test the cleanliness of a surface?

 

2
Fri Dec 19, 2025, 9:37 am