Log in
LEED v4.1

Core and Shell

Energy and Atmosphere
Enhanced Refrigerant Management

LEED CREDIT

CS-v4.1 EAc6: Enhanced Refrigerant Management 1 point

See all forum discussions about this credit »
View the LEED v4 version of this credit »

SPECIAL REPORT

LEEDuser expert

Paul Swierc

CEM, CPMP, BECxP, CxA+BE, EIT, LEED GA

WSP
Senior Commissioning Agent

SPECIAL REPORT

LEEDuser’s viewpoint

Frank advice from LEED experts

LEED is changing all the time, and every project is unique. Even seasoned professionals can miss a critical detail and lose a credit or even a prerequisite at the last minute. Our expert advice guides our LEEDuser Premium members and saves you valuable time.

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

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)
See all forum discussions about this credit »

What does it cost?

Cost estimates for this credit

On each BD+C v4 credit, LEEDuser offers the wisdom of a team of architects, engineers, cost estimators, and LEED experts with hundreds of LEED projects between then. They analyzed the sustainable design strategies associated with each LEED credit, but also to assign actual costs to those strategies.

Our tab contains overall cost guidance, notes on what “soft costs” to expect, and a strategy-by-strategy breakdown of what to consider and what it might cost, in percentage premiums, actual costs, or both.

This information is also available in a full PDF download in The Cost of LEED v4 report.

Learn more about The Cost of LEED v4 »

Addenda

11/10/2020Updated: 11/25/2020
Reference Guide Correction
Description of change:
1. Delete the phrase "There are no substantive changes to the credit requirements;", capitalize the R in "refer to the LEED v4 reference guide", add "edits and" before the word "addition", and add an "s" to the end of the word "addition"

2. Insert new section titled "Behind the Intent". insert the following text:
"While the Montreal Protocol provided for the phase-out of CFC and HCFC refrigerants due to their ozone depletion potential, it led the industry shift toward the usage of hydrofluorocarbons (HFCs), which are potent greenhouse gases. In the Kigali Amendment to the Montreal Protocol, adopted in 2016, 197 countries committed to cut the production and consumption of HFCs by more than 80 percent over the next 30 years.

Alternatives to HFCs have been developed to provide lower-GWP refrigerant options, although the availability of low-GWP refrigerants varies between applications. The transition to lower-GWP refrigerant options requires an increased focus on safety, as many “next generation” refrigerants can pose flammability and/or toxicity risks if not properly managed. ASHRAE Standard 15-2019: Safety Standard for Refrigeration Systems provides essential guidance to manufacturers, design engineers and operators who need to stay current with new air conditioning and refrigerating requirements. The selection of refrigerants and their operating systems should be based on a holistic analysis of multiple criteria, including safety, environmental impacts, energy efficiency and cost.

In addition to protecting human health, effective refrigerant management during processes of design, manufacturing, operation, systems servicing, and end of life helps to reduce global emissions. The majority of refrigerant emissions happen at end of life, so the effective disposal of refrigerants currently in circulation (including CFCs, HCFCs and HFCs) is essential. A robust refrigerant management plan provides a framework for building owners and operators to properly manage these chemicals and minimize direct contributions to climate change."

3. Insert new section titled "Step-by-Step". Insert the following text:
"Step 1. Document compliance with ASHRAE Standard 15-2019
Review ASHRAE Standard 15-2019: Safety Standard for Refrigeration Systems. The standard establishes procedures for the safe design, construction, installation and operation of refrigerant systems. Note that Standard 15 must be used with ASHRAE Standard 34-2019 Designation and Safety Classification of Refrigerants, which describes a shorthand way of naming refrigerants and assigns safety classifications based on toxicity and flammability data.

Ensure that all refrigeration equipment installed in the project comply with ASHRAE Standard 15-2019 requirements for restrictions on refrigerant use (section 7), installation restrictions (section 8), design and construction of equipment and systems (section 9), operation and testing (section 10) and general requirements (section 11), as applicable to the project scope.

Step 2. Develop and implement refrigerant management plan
Develop and implement a refrigerant management plan. The plan must include a complete inventory of all refrigerants used in the project and address refrigerant leak detection, system retrofit, and proper end of life disposal for all HVAC&R systems containing more than 0.5 pound (225 gram) of refrigerant.

The plan must identify the individuals responsible for the care and maintenance of refrigerant systems, regular leak detection and monitoring, record-keeping and training of personnel necessary to execute the plan.

All contractors or service technicians performing work on any HVAC&R systems shall have access to the refrigerant management plan and, upon completion of the work, provide documentation that confirms continued compliance with the plan.

Step 3. Calculate refrigerant impact of proposed systems
Refer to the LEED v4 reference guide.

Step 4. Incorporate design criteria into project plans and specifications
Refer to the LEED v4 reference guide."

4. Under Further Explanation, insert a new section "Referenced Standards" and insert the following text:
" ASHRAE Standard 15-2019: Safety Standard for Refrigeration Systems"

5. Under new section "Referenced Standards", insert new section "Required Documentation" and insert the following text:
"Refer to the LEED v4 Reference Guide content, plus the following additions for Option 2:
• Confirmation that project HVAC&R systems comply with ASHRAE Standard 15
• Refrigerant management plan"

Campus Applicable
No
Internationally Applicable:
No
11/10/2020Updated: 11/20/2020
Rating System Correction
Description of change:
Intent

1. In credit intent, replace the word "reduce" with "eliminate" and add ", including the Kigali Amendment," after the words "the Montreal Protocol"

Requirements

2. Option 2: before the sentence that begins "Select refrigerants that are used..." add the following text:
"Comply with ASHRAE Standard 15-2019: Safety Standard for Refrigeration Systems, or USGBC-approved equivalent, as applicable to the project scope.

Develop and implement a refrigerant management plan that addresses leak detection, system retrofit, and end of life disposal for all HVAC&R systems containing more than 0.5 pound (225 grams) of refrigerant."
Campus Applicable
No
Internationally Applicable:
No
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

Paul Swierc

CEM, CPMP, BECxP, CxA+BE, EIT, LEED GA

WSP
Senior Commissioning Agent

Get the inside scoop

Our editors have written a detailed analysis of nearly every LEED credit, and LEEDuser premium members get full access. We’ll tell you whether the credit is easy to accomplish or better left alone, and we provide insider tips on how to document it successfully.

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

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)

LEEDuser expert

Paul Swierc

CEM, CPMP, BECxP, CxA+BE, EIT, LEED GA

WSP
Senior Commissioning Agent

See all LEEDuser forum discussions about this credit » Subscribe to new discussions about CS-v4.1 EAc6