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LEED v4
Existing Warehouses & Dist. Ctrs.
Energy and Atmosphere

Enhanced refrigerant management

LEED CREDIT

Warehouses-EBOM-v4 EAc8: Enhanced Refrigerant Management 1 point

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SPECIAL REPORT

LEEDuser expert

Trista Little

LEED AP O+M, BD+C, Fitwel Ambassador

WSP USA
Sustainability Manager

SPECIAL REPORT

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Credit language

USGBC logo

© Copyright U.S. Green Building Council, Inc. All rights reserved.

Intent

To reduce ozone depletion and support early compliance with the Montreal Protocol while minimizing direct contributions to climate change.

Requirements

Establishment

Option 1. No refrigerants or low-impact refrigerants (1 point)

Do not use refrigerants, or use only refrigerants (naturally occurring or synthetic) that have an ozone depletion potential (ODP) of zero and a global warming potential (GWP) of less than 50.

OR

Option 2. Calculation of refrigerant impact (1 point)

Select refrigerants that are used in heating, ventilating, air-conditioning, and refrigeration (HVAC&R) equipment to minimize or eliminate the emission of compounds that contribute to ozone depletion and climate change. The combination of all new and existing base building and tenant HVAC&R equipment that serve the project must comply with the following formula:

IP units  
LCGWP + LCODP x 105 100
SI units
LCGWP + LCODP x 105 13
Calculation definitions for LCGWP + LCODP x 105 ≤ 100
(IP units)
Calculation definitions for LCGWP + LCODP x 105 ≤ 13
(SI units)
LCODP = [ODPr x (Lr x Life +Mr) x Rc]/Life LCODP = [ODPr x (Lr x Life +Mr) x Rc]/Life
LCGWP = [GWPr x (Lr x Life +Mr) x Rc]/Life LCGWP = [GWPr x (Lr x Life +Mr) x Rc]/Life
LCODP: Lifecycle Ozone Depletion Potential
(lb CFC 11/Ton-Year)
LCODP: Lifecycle Ozone Depletion Potential
(kg CFC 11/(kW/year))
LCGWP: Lifecycle Direct Global Warming Potential
(lb CO2/Ton-Year)
LCGWP: Lifecycle Direct Global Warming Potential
(kg CO2/kW-year)
GWPr: Global Warming Potential of Refrigerant
(0 to 12,000 lb CO2/lbr)
GWPr: Global Warming Potential of Refrigerant
(0 to 12,000 kg CO2/kg r)
ODPr: Ozone Depletion Potential of Refrigerant
(0 to 0.2 lb CFC 11/lbr)
ODPr: Ozone Depletion Potential of Refrigerant
(0 to 0.2 kg CFC 11/kg r)
Lr: Refrigerant Leakage Rate
(2.0%)
Lr: Refrigerant Leakage Rate
(2.0%)
Mr: End-of-life Refrigerant Loss
(10%)
Mr: End-of-life Refrigerant Loss
(10%)
Rc: Refrigerant Charge
(0.5 to 5.0 lbs of refrigerant per ton of gross AHRI rated cooling capacity)
Rc: Refrigerant Charge
(0.065 to 0.65 kg of refrigerant per kW of AHRI rated or Eurovent Certified cooling capacity)
Life: Equipment Life
(10 years; default based on equipment type, unless otherwise demonstrated)
Life: Equipment Life
(10 years; default based on equipment type, unless otherwise demonstrated)

For multiple types of equipment, calculate a weighted average of all base building HVAC&R equipment, using the following formula:

IP units     SI units
∑ ( LCGWP + LCODP x 105 ) x Qunit ≤ 100 ∑ ( LCGWP + LCODP x 105 ) x Qunit ≤ 13
Qtotal Qtotal

Calculation definitions for
[ ∑ (LCGWP + LCODP x 105) x Qunit ] / Qtotal ≤ 100
Calculation definitions for
[ ∑ (LCGWP + LCODP x 105) x Qunit ] / Qtotal ≤ 13
(IP units) (SI units)
Qunit = Gross AHRI rated cooling capacity of an individual HVAC or refrigeration unit (Tons) Qunit = Eurovent Certified cooling capacity of an individual HVAC or refrigeration unit (kW)
Qtotal = Total gross AHRI rated cooling capacity of all HVAC or refrigeration Qtotal = Total Eurovent Certified cooling capacity of all HVAC or refrigeration (kW)
Performance

None.

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Frequently asked questions

My building uses a variable refrigerant flow system. Do I have to account for refrigerant in the piping runs in the credit calculations?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

We haven’t experienced any refrigerant leakage in our systems for the past 5 years. Can we use a refrigerant leakage rate of 0% in the calculations?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

The refrigerant type I need to enter is missing from the credit form. What should I do?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Are HCFC or HFC refrigerants considered CFC-based refrigerants?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

See all forum discussions about this credit »

Documentation toolkit

The motherlode of cheat sheets

LEEDuser’s Documentation Toolkit is loaded with calculators to help assess credit compliance, tracking spreadsheets for materials, sample templates to help guide your narratives and LEED Online submissions, and examples of actual submissions from certified LEED projects for you to check your work against. To get your plaque, start with the right toolkit.

LEEDuser expert

Trista Little

LEED AP O+M, BD+C, Fitwel Ambassador

WSP USA
Sustainability Manager

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USGBC logo

© Copyright U.S. Green Building Council, Inc. All rights reserved.

Intent

To reduce ozone depletion and support early compliance with the Montreal Protocol while minimizing direct contributions to climate change.

Requirements

Establishment

Option 1. No refrigerants or low-impact refrigerants (1 point)

Do not use refrigerants, or use only refrigerants (naturally occurring or synthetic) that have an ozone depletion potential (ODP) of zero and a global warming potential (GWP) of less than 50.

OR

Option 2. Calculation of refrigerant impact (1 point)

Select refrigerants that are used in heating, ventilating, air-conditioning, and refrigeration (HVAC&R) equipment to minimize or eliminate the emission of compounds that contribute to ozone depletion and climate change. The combination of all new and existing base building and tenant HVAC&R equipment that serve the project must comply with the following formula:

IP units  
LCGWP + LCODP x 105 100
SI units
LCGWP + LCODP x 105 13
Calculation definitions for LCGWP + LCODP x 105 ≤ 100
(IP units)
Calculation definitions for LCGWP + LCODP x 105 ≤ 13
(SI units)
LCODP = [ODPr x (Lr x Life +Mr) x Rc]/Life LCODP = [ODPr x (Lr x Life +Mr) x Rc]/Life
LCGWP = [GWPr x (Lr x Life +Mr) x Rc]/Life LCGWP = [GWPr x (Lr x Life +Mr) x Rc]/Life
LCODP: Lifecycle Ozone Depletion Potential
(lb CFC 11/Ton-Year)
LCODP: Lifecycle Ozone Depletion Potential
(kg CFC 11/(kW/year))
LCGWP: Lifecycle Direct Global Warming Potential
(lb CO2/Ton-Year)
LCGWP: Lifecycle Direct Global Warming Potential
(kg CO2/kW-year)
GWPr: Global Warming Potential of Refrigerant
(0 to 12,000 lb CO2/lbr)
GWPr: Global Warming Potential of Refrigerant
(0 to 12,000 kg CO2/kg r)
ODPr: Ozone Depletion Potential of Refrigerant
(0 to 0.2 lb CFC 11/lbr)
ODPr: Ozone Depletion Potential of Refrigerant
(0 to 0.2 kg CFC 11/kg r)
Lr: Refrigerant Leakage Rate
(2.0%)
Lr: Refrigerant Leakage Rate
(2.0%)
Mr: End-of-life Refrigerant Loss
(10%)
Mr: End-of-life Refrigerant Loss
(10%)
Rc: Refrigerant Charge
(0.5 to 5.0 lbs of refrigerant per ton of gross AHRI rated cooling capacity)
Rc: Refrigerant Charge
(0.065 to 0.65 kg of refrigerant per kW of AHRI rated or Eurovent Certified cooling capacity)
Life: Equipment Life
(10 years; default based on equipment type, unless otherwise demonstrated)
Life: Equipment Life
(10 years; default based on equipment type, unless otherwise demonstrated)

For multiple types of equipment, calculate a weighted average of all base building HVAC&R equipment, using the following formula:

IP units     SI units
∑ ( LCGWP + LCODP x 105 ) x Qunit ≤ 100 ∑ ( LCGWP + LCODP x 105 ) x Qunit ≤ 13
Qtotal Qtotal

Calculation definitions for
[ ∑ (LCGWP + LCODP x 105) x Qunit ] / Qtotal ≤ 100
Calculation definitions for
[ ∑ (LCGWP + LCODP x 105) x Qunit ] / Qtotal ≤ 13
(IP units) (SI units)
Qunit = Gross AHRI rated cooling capacity of an individual HVAC or refrigeration unit (Tons) Qunit = Eurovent Certified cooling capacity of an individual HVAC or refrigeration unit (kW)
Qtotal = Total gross AHRI rated cooling capacity of all HVAC or refrigeration Qtotal = Total Eurovent Certified cooling capacity of all HVAC or refrigeration (kW)
Performance

None.

In the end, LEED is all about documentation. LEEDuser’s Documentation Toolkit, for premium members only, saves you time and helps you avoid mistakes with:

  • Calculators to help assess credit compliance.
  • Tracking spreadsheets for materials purchases.
  • Spreadsheets and forms to give to subs and other team members.
  • Guidance documents on arcane LEED issues.
  • Sample templates to help guide your narratives and LEED Online submissions.
  • Examples of actual submissions from certified LEED projects.

My building uses a variable refrigerant flow system. Do I have to account for refrigerant in the piping runs in the credit calculations?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

We haven’t experienced any refrigerant leakage in our systems for the past 5 years. Can we use a refrigerant leakage rate of 0% in the calculations?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

The refrigerant type I need to enter is missing from the credit form. What should I do?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Are HCFC or HFC refrigerants considered CFC-based refrigerants?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

LEEDuser expert

Trista Little

LEED AP O+M, BD+C, Fitwel Ambassador

WSP USA
Sustainability Manager

See all LEEDuser forum discussions about this credit » Subscribe to new discussions about Warehouses-EBOM-v4 EAc8