3.1: Energy Performance

(180 maximum points possible)

GREEN GLOBES #3.1.1 - ANSI #8.1, 8.2, 8.3

Three paths are provided for assessing energy performance. 

• (#3.1.1.1) Path A: Performance - ANSI/ASHRAE/IES Standard 90.1-2010, Appendix G: 180 points

OR

• (#3.1.1.2) Path B: Performance - Building Carbon Dioxide Equivalent (CO2e) Emissions: 180 points

OR 

• (#3.1.1.3) Path C: Prescriptive: 111 points

Points cannot be combined between paths. Select one of the paths to view its respective criteria.

PATH A

GREEN GLOBES #3.1.1.1.1 - ANSI #8.1.1.1 Does the building comply with minimum performance based requirements of ANSI/ ASHRAE/IES Standard 90.1-2010 or the 2012 IECC?

AND

Does the building demonstrate an improvement over an ANSI/ASHRAE/IES Standard 90.1-2010 baseline using Appendix G?

• Yes
• No

Assessment Guidance

Energy cost calculations may include price components based on time of day and demand if these are available. Credit for demand-saving measures, cogeneration, and energy storage may be claimed by utilizing rate schedules that reflect the billing rates in effect for the local utility, rather than using EIA state average utility rates.

The energy modeling report must include a narrative describing energy efficiency measures in the project along with input and output reports sufficient to verify the modeling approach used to demonstrate the higher level of performance, including key assumptions and methods used to determine the inputs. The report may include tabular summaries of:

• Building envelope performance (permit document tabulation for the enclosure, such as COMcheck forms);
• HVAC system capacities and efficiencies; 
• Lighting power densities and control methods; 
• Schedules for occupancy, equipment, and HVAC;
• Assumptions for plug and process loads; AND/OR
• ENERGY STAR® Target Finder results or other benchmarking comparisons for the baseline and proposed models.

In addition to the energy modeling report, include the following documentation: 

• Description of any variances between models for plug and process loads. 
• Documentation of basis for utility rates used in whole-building energy model. 
• People moving equipment will be modeled identically in the proposed and baseline buildings, and credit taken appropriately in Section 8.4 Non-Modeled Energy Efficiency Statement of energy cost savings rounded to one-tenth of a percent.

References 

• International Energy Conservation Code (IECC) 2012 
• ANSI/ASHRAE/IESNA Standard 90.1-2010

Recommended Documents 

• Energy Modeling Report

GREEN GLOBES #3.1.1.1.1.1 - ANSI #8.1.1.1 What is the percentage improvement over baseline demonstrated by the energy model?

PATH B

GREEN GLOBES #3.1.1.2.1 - ANSI #8.2.1.1 Does the building achieve more than a 50% reduction in carbon dioxide equivalent (CO2e) emissions over the baseline building?

• Yes
• No

Assessment Guidance

Reduction in carbon dioxide equivalent (CO2e) emissions over the baseline building is calculated using the following formula:

Percent reduction in CO2e =100 X (1 – PER/BER), where: 

• The Baseline Equivalent Emission Rate (BER) is the baseline building’s carbon dioxide equivalent (CO2e) emission rate. 
• PER is the proposed building’s carbon dioxide equivalent (CO2e) emission rate.
• PER is less than BER.

Baseline Equivalent Emission Rate (BER)

Calculations BER is calculated using the following formula:

BER = (baseline Energy Use Intensity (EUI)) X product of [(percentage of each fuel in the annual energy fuel mix for the planned building type and location) X (CO2e Emission Factor for each fuel)], where: 

• The baseline building’s site Energy Use Intensity (EUI) is determined using ENERGY STAR Target Finder.
• The baseline building’s site EUI is 35% better than the Energy Performance Rating (Target Finder) score of 50.
• The annual energy fuel mix for the baseline building is determined from DOE-EIA and reported at the top of Target Finder’s Results page. 
• The CO2e emission factor for each fuel in the baseline building’s annual energy fuel mix can be found in Table 8.1.1- A.

Proposed Equivalent Emission Rate (PER)

Calculations PER is calculated using the following formula:

PER = (proposed EUI) X product of [(percentage of each fuel in the annual energy fuel mix for the proposed building) X (CO2e Emission Factor for each fuel)], where: 

• The proposed building’s Energy Use Intensity (EUI) is calculated using a computer-based simulation program that conforms to the requirements outlined in Section 506 of the 2009 International Energy Conservation Code or ANSI/ASHRAE/IES Standard 90.1-2010, Appendix G, Section G2.2.
• Determine the Proposed Building’s Equivalent Emission Rate (PER) by performing an EUI calculation for the proposed building using the energy performance requirements specified by Table G3.1 Modeling Requirements for Calculating Proposed and Baseline Building Performance in ANSI/ ASHRAE/IES Standard 90.1-2010. Only the Proposed Building Performance column is used for modeling the PER.
• Use the annual energy fuel mix planned for the proposed building for this calculation. 
• The CO2e emission factor for each fuel in the proposed building’s annual energy fuel mix can be found in ANSI/GBI 01-2019 Green Globes Assessment Protocol for Commercial Buildings, Table 8.2.1-A.

Table 8.2.1 - A: CO2e Emission Factors

For projects that have concerns about the potential results for U.S., Canada, or global projects based on applicability of Target Finder, contact GBI Chief Engineer or assigned Green Globes Assessor for an alternate compliance path.

References 

• ANSI/GBI 01-2019 Green Globes Assessment Protocol for Commercial Buildings

Recommended Documents 

• PER, BER, and CO2e emission reduction calculations
• Lighting design permit documents (e.g. COMcheck reports)
• ENERGY STAR Target Finder results 
• Energy simulation program's inputs and results

GREEN GLOBES #3.1.1.2.1.1 - ANSI #8.2.1.1 What is the percentage reduction in C02e emissions above the baseline?

References 

• ANSI/GBI 01-2019 Green Globes Assessment Protocol for Commercial Buildings

Recommended Documents 

• PER, BER, and CO2e emission reduction calculations 
• Lighting design permit documents (e.g. COMcheck reports) 
• ENERGY STAR Target Finder results 
• Energy simulation program's inputs and results

PATH C

GREEN GLOBES #3.1.1.3 - ANSI #8.3 : Compliance with Path C earns points based on the minimum prescriptive requirements of referenced codes and standards and building characteristics or best practices that are related to energy efficiency.

GREEN GLOBES #3.1.1.3.1 - ANSI #8.3.1.1.1 : BUILDING ENVELOPE AND FORM

Thermal Resistance and Transmittance - What standard will be used to determine prescriptive requirements for opaque and fenestration elements of the building envelope?

• 2015 International Energy Conservation Code (IECC) 
• ANSI/ASHRAE/IES Standard 90.1-2013

Assessment Guidance

The same standard must be used to determine all factors.

References

• ANSI/ASHRAE/IES Standard 90.1-2013, Section 5
• 2015 IECC, Section C402

GREEN GLOBES #3.1.1.3.2 - ANSI #8.3.1.1.1 Do all opaque and fenestration elements of the building envelope have a window-to-wall ratio less than or equal to 40%, and meet or exceed prescriptive requirements of the 2015 IECC (section C402) or ANSI/ASHRAE/IES Standard 90.1-2013, Section 5?

• There is a 10% or greater decrease in U-factor, C-factor, F-factor, and SHGC (10 points) 
• There is a 5-9% decrease in U-factor, C-factor, F-factor, and SHGC (8 points) 
• The R-value/RSI-value or U-factor, C-factor, F-factor; and fenestration, U-factor, and SHGC meet or exceed the specified prescriptive requirements (5 points) 
• They do not meet or exceed the specified prescriptive requirements (0 points)

Assessment Guidance

All of the opaque and fenestration elements of the building envelope must have a window-to-wall ratio less than or equal to 40% and comply with at least one of the following: 

• The thermal transmittance (U-factor), thermal conductance (C-factor), F-factor, and SHGC are less than those in the 2015 IECC, Section C402, or ANSI/ ASHRAE/IES Standard 90.1-2013, Section 5, by 10%, except for these items where the factors must meet the 2015 IECC or ANSI/ASHRAE/IES Standard 90.1-2013: 
  • Opaque elements in Climate Zones 1 through 3 
  • SHGC for north and south-oriented fenestration 
  • In cases where the r-value or SHGC are NR (no requirement). 
• Demonstrate that the U-factor, C-factor, F-factor, and SHGC are less than those in the 2015 IECC, Section C402, or ANSI/ASHRAE/IES Standard 90.1-2013, Section 5, by 5%, except for these items where the factors must meet the 2015 IECC or ANSI/ASHRAE/IES Standard 90.1-2013: 
  • Opaque elements in Climate Zones 1 through 3 
  • SHGC for north and south-oriented fenestration 
  • In cases where the r-value or SHGC are NR (no requirement). 
• The thermal resistance (R-value/RSI-value) or the thermal transmittance (U-factor), thermal conductance (C-factor), and F-factor; and for fenestration, the U-factor and SHGC meet or exceed the prescriptive requirements of the 2015 IECC, section C402, or ANSI/ASHRAE/IES Standard 90.1-2013, section 5.5.

References 

• ANSI/ASHRAE/IES Standard 90.1-2013, Section 5 
• 2012 IECC, Section C402
• 2015 IECC, Section C402

Recommended Documents 

• List of thermal resistance or thermal transmittance factors, thermal conductance factors, and F-factors 
• List of SGHC values including calculations for overall performance

GREEN GLOBES #3.1.1.3.3 - ANSI #8.3.1.2.1 : Orientation

Per orientation of the building, what is the ratio of west fenestration to total fenestration and the ratio of east fenestration to total fenestration?

• The ratio is less than or equal to 1/6 (10 points) 
• The ratio is greater than 1/6 but less than or equal to 1/5 (6 points) 
• The ratio is greater than 1/5 but less than or equal to 1/4 (2 points) 
• The ratio is greater than 1/4 (0 points)

Assessment Guidance

The building should be oriented such that the ratio of the west fenestration to the total fenestration and the ratio of the east fenestration to the total fenestration is between ¼ and 1/6.

Recommended Documents 

• Site plans 
• Fenestration ratios for north/south and east/west orientations 
• Construction Documents

GREEN GLOBES #3.1.1.3.4 - ANSI #8.3.2.1.1 : LIGHTING - Interior Lighting Power

Does total interior lighting power density (LPD) comply with ANSI/ASHRAE/IES Standard 90.1-2013 or 2015 IECC?

• Compliant with ANSI/ ASHRAE/IES Standard 90.1-2013 (5 points) 
• Compliant with 2015 IECC (5 points)
• No (0 points)

Assessment Guidance

The total interior lighting power density (LPD) of the building must be less than the referenced standard. Base calculations for LPD on either the whole-building method or space-by-space method.

The control factors from Table 9.6.3 in 90.1-2013 are used to achieve or exceed LPD targets.

Account for high-end trim or Institutional tuning in all spaces where it is present by using a control factor of 0.15 for the purposes of scoring this item.

References 

• ANSI/ASHRAE/IES Standard 90.1-2013 
• 2015 IECC

GREEN GLOBES #3.1.1.3.5 - ANSI #8.3.2.1.1 What is the total percentage beyond the requirements of either ANSI/ASHRAE/IES Standard 90.1-2013 or 2015 IECC?

Assessment Guidance

One additional point is earned for each 2% beyond the requirements of ANSI/ ASHRAE/IES Standard 90.1-2013 or 2015 IECC up to an additional 15 points.

References

• ANSI/ASHRAE/IES Standard 90.1-2013
• 2015 IECC

GREEN GLOBES #3.1.1.3.6 - ANSI #8.3.2.2.1 : Interior Automatic Light Shutoff Controls

Do all spaces have automatic controls that turn off non-twenty-four-hour lighting based on occupancy or time schedule?

• Yes (2 points) 
• No (0 points) 
• N/A

Assessment Guidance

One or more of the following provides automatic control: 

• Occupancy or vacancy sensors; 
• Building control system based on timer or schedule, for example: 
  • Time switch; 
  • Automatic relays controlled by BAS; 
  • Embedded controls; or 
• Other control signal.

Lighting control zones consist of up to 25,000 ft.2 (2,322.6 m2) on a single floor.

Not applicable where lighting control could endanger occupant safety in a space, patient care space, AND/OR dwelling units and guest rooms, or where local code prohibits such systems.

Recommended Documents 

• Lighting plans with controls information or separate lighting controls plan

GREEN GLOBES #3.1.1.3.7 - ANSI #8.3.2.3.1 : Lighting Level Control

Do more than 90% of light fixtures in regularly occupied spaces reduce the lighting load by at least 50% from full lighting power using listed technologies?

• More than 90% of light fixtures have continuously dimmable light reduction controls (3 points) 
• More than 90% of the light fixtures have multi-level lighting (2 points) 
• There is bi-level lighting control (1 points) 
• No (0 points) 
• N/A

Assessment Guidance

In all regularly occupied spaces that use at least 0.5 W/ft2 (5.4 W/m2 ) of lighting power, more than 90% of light fixtures must have lighting controls that can reduce the lighting load by at least 50% from full lighting power using any of the following technologies: 

• Dimming: Continuous dimming of the lamps or luminaires from 100% to at least 10% of full light output; 
• Multi-level Lighting: Lighting with at least 5 control steps including ON and OFF; or 
• Bi-level lighting: Dual switching of alternate rows or luminaires; Switching of individual lamps independently of adjacent lamps within a luminaire.

Not applicable where spaces use less than 0.5 W/ft2 (5.4W/m2 ).

Recommended Documents

• Lighting plans with controls information or separate lighting controls plan

GREEN GLOBES #3.1.1.3.8 - ANSI #8.3.2.3.2 Can occupants in private offices less than 250 ft2 (23.23 m2 ) and in open office workstation areas adjust their direct overhead lighting levels via continuous dimming or multi-level lighting?

• More than 90% of light fixtures have continuously dimmable personal lighting control (3 points) 
• More than 90% of the light fixtures have multi-level lighting (2 points) 
• There is bi-level control of overhead lighting and separate task lights (1 points) 
• No (0 points) 
• N/A

Assessment Guidance

Providing bi-level overhead lighting in conjunction with separate task lighting is permitted for compliance. Not applicable for buildings that will have no private offices (less than 250 ft2 (23.23 m2 )) or open office workstation areas.

GREEN GLOBES #3.1.1.3.9 - ANSI #8.3.2.4.1 : Daylighting

Does the building meet the following? 

• For buildings two stories or less above grade: a minimum of 50% of the total combined floor area is in a daylight area.

OR 

• For buildings three or more stories above grade: a minimum of 25% of the total combined floor area is in a daylight area.

AND

Control Lighting in the primary and secondary daylight areas with daylight responsive dimming plus OFF.

• Yes, the building meets the requirements (3 points) 
• No (0 points) 
• N/A

Assessment Guidance

Excludes spaces that are not regularly occupied, such as, but not limited to, mechanical spaces and storage areas.

Not applicable where spaces would be functionally compromised by daylighting.

References 

• ANSI/ASHRAE/IES Standard 90.1-2013, Section 3

GREEN GLOBES #3.1.1.3.10 - ANSI #8.3.2.4.2 Does a minimum 2% of the roof area consist of skylights that comply with the requirements of Sections 5 and 9 of ASHRAE Standard 90.1-2013?

Note: Earning this credit is contingent on compliance with the daylight control credit 3.1.3.10 (ANSI 8.3.2.5.1).

• 5% or more of the roof consists of skylights (3 points) 
• More than 3% but less than 5% of the roof consists of skylights (2 points) 
• 2 to 3% of the roof consists of skylights (1 points) 
• Less than 2% of the roof consists of skylights (0 points) 
• N/A

Assessment Guidance

Base this percentage upon the horizontal projected area of the skylight and roof, without overhangs.

Note: Earning this credit is contingent on compliance with 3.1.3.10 Control for Daylit Zones (ANSI 8.3.2.5.1).

Not applicable where the building is located in Climate Zones 7 or 8.

References 

• ANSI/ASHRAE/IES Standard 90.1-2013, Section 9 
• ANSI/ASHRAE/IES Standard 90.1-2013, Section 5

GREEN GLOBES #3.1.1.3.11 - ANSI #8.3.2.5.1 : Control for Daylit Zones

Do primary and secondary daylight zones [use 90.1-2013 definitions for daylight zones] control lighting with automatic daylight responsive lighting controls that lower the power consumption of the lighting system when daylight is available?

• There is automatic continuous daylight dimming to OFF control of all the general lighting in both primary and secondary zones (3 points) 
• There is automatic daylighting switching to OFF control of the general lighting in primary zone and secondary daylight zones (2 points) 
• There is no daylighting as it would be detrimental to the intended use of more than 90% of the building area (2 points) 
• None of the above (0 points)

Tooltip

Automatic daylight responsive lighting controls lower power consumption of the lighting system when daylight is available.

Assessment Guidance

Credit for 3.1.3.9 (ANSI 8.3.2.4.2) can be earned only if points are earned for this criterion.

References 

• ANSI/ASHRAE/IES Standard 90.1-2013

Recommended Documents 

• Lighting plans with controls information or separate lighting controls plan

GREEN GLOBES #3.1.1.3.12 - ANSI #8.3.2.6.1 : Exterior Luminaires and Controls

Do exterior LPDs comply with or improve upon ANSI/ASHRAE/IES Standard 90.1-2013 Section 9.4.3 for exterior lighting power density?

• LPDs are 20% below ANSI/ ASHRAE/IES Standard 90.1-2013 (2 points)
• LPDs meet ANSI/ASHRAE/ IES Standard 90.1-2013 (1 points)
• No (0 points) 
• N/A

Assessment Guidance

Additional control requirements to earn LPD credit include: 

• Deactivating lighting when sufficient daylight is available; and 
• Shutting off façade and landscape lighting between midnight and business opening, or other similar hours approved by the AHJ.

Not applicable where there are no exterior luminaries.

References 

• ANSI/ASHRAE/IES Standard 90.1-2013

Recommended Documents 

• LPD calculations and results (COMcheck is one acceptable calculation method)

GREEN GLOBES #3.1.1.3.13 - ANSI #8.3.2.6.2 Is pole lighting in parking lots and garage luminaires controlled such that at least 50% of the lighting power is automatically reduced during periods of no activity detected in the lighting zone?

• All garage and parking lot general lights are controlled to more than one lighting level (2 points) 
• 50% of the garage and parking lot general lighting is controlled to more than one lighting level (1 points) 
• No (0 points) 
• N/A

Assessment Guidance

Not applicable where there are no garage or parking lot general lighting fixtures.

Recommended Documents 

• Lighting plans with controls information or separate lighting controls plan

GREEN GLOBES #3.1.1.3.14 - ANSI #8.3.3.1.1 HVAC SYSTEMS AND CONTROLS : Building Automation System (BAS)

Is there a central Building Automation System (BAS) encompassing all systems that affect building energy performance, lighting, and thermal comfort including all listed functionality?

• Yes (1 points) 
• No (0 points) 
• N/A

Assessment Guidance

The central Building Automation System (BAS) must encompass all systems that affect building energy performance, lighting, and thermal comfort including all of the functionality listed below: 

• A series of direct digital controllers (DDC) interconnected by a local area network and accessible by a web browser; 
• Open communication protocols (e.g., BACnet) to allow interoperability between building systems and control vendors; 
• Energy management and monitoring software that provides: 
  • Start/stop control for HVAC equipment; 
  • Control of economizer cycles and heat recovery equipment; and 
  • Control of minimum outdoor ventilation air;
• Log of trending, scheduling, set-point adjustments, event information, alarm information, confirmation of operators, and execution of global commands; and 
• Monitoring of fire safety systems, security systems, and elevator control systems to prompt emergency operating modes of HVAC and lighting systems.

Not applicable where buildings are under 20,000 ft.2 (1,858.06 m2 ).

GREEN GLOBES #3.1.1.3.15 - ANSI #8.3.3.1.2 Does the BAS have the capability to accept and collate data generated by any and all metering equipment per Section 3.3 Metering, Monitoring, and Measurement?

• Yes (1 points)
• No (0 points) 
• N/A

Assessment Guidance

Section 3.3 Metering, Monitoring, and Measurement (ANSI 8.5) lists metering and sub-metering criteria from which the BAS must be able to accept and collate data.

Not applicable where buildings are under 20,000 ft.2 (1,858.06 m2 ).

References 

• ANSI/GBI 01-2019 Green Globes Assessment Protocol for Commercial Buildings, Section 8.5

GREEN GLOBES #3.1.1.3.16 - ANSI #8.3.3.2.1 : Cooling Equipment

Does cooling equipment base efficiency meet ANSI/ASHRAE/IES Standard 90.1-2013 efficiency requirements with respect to COP, EER, IEER, and SEER?

OR

Does the building not use mechanical cooling?

• Performance is 10% higher than the requirements of ANSI/ASHRAE/IES Standard 90.1-2013 (5 points) 
• Performance is 5% higher than the requirements of ANSI/ASHRAE/IES Standard 90.1-2013 (3 points) 
• Performance is equivalent to the requirements of ANSI/ ASHRAE/IES Standard 90.1-2013 (1 points) 
• No (0 points) 
• N/A

Assessment Guidance

Not Applicable where the building does not use mechanical cooling.

90.1-2013 TABLE	EQUIPMENT
Table 6.8.1-1	Unitary A/C and condensing units
Table 6.8.1-2	Unitary and applied heat pumps
Table 6.8.1-3	Water-chilling packages
Table 6.8.1-4	PTAC, PTHP, single-package vertical A/C and heat pumps, room air-conditioners, and room A/C heat pumps
Table 6.8.1-9	Variable refrigerant flow A/C (multisplit) systems
Table 6.8.1-10	Variable refrigerant flow air-to-air and applied heat pumps
Table 6.8.1-11	Computer room A/C and condensing units

A weighted average improvement over efficiency must be provided by the design engineer based on the capacity for projects with multiple applicable types of equipment. Air-conditioning units constituting less than 1% of the total capacity may be omitted from the calculation.

Cooling systems that utilize hydronic heat rejection must also include measures to minimize fan power in order to earn efficiency credits under this section. Any of the following measures are used in cooling towers to reduce fan energy consumption: 

• Two-speed fans; 
• Variable speed fans; AND/OR 
• Measures that allow operation at reduced fan power during part-load operation.

Heat rejection equipment must comply with minimum efficiency levels in ANSI/ ASHRAE/IES Standard 90.1-2013, Table 6.8.1-7.

Table 6.8.1-10 also covers water source products.

References 

• ANSI/ASHRAE/IES Standard 90.1-2013

GREEN GLOBES #3.1.1.3.16.1 - ANSI #8.3.3.2.1

Describe the cooling equipment technology and list the manufacturer.

Tooltip

HVAC systems typically account for the largest energy consumption in a building as well as contribute to occupant comfort and satisfaction.

Assessment Guidance

Cooling equipment technology includes, but is not limited to, the following: 

• Unitary A/C and condensing units, 
• Unitary and applied heat pumps, 
• Water-chilling packages, 
• PTAC, PTHP, single-package vertical A/C and heat pumps, room air-conditioners, and room A/C heat pumps
• Variable refrigerant flow A/C (multisplit) systems, 
• Variable refrigerant flow air-to-air, applied heat pumps, and water source products, or 
• Computer room A/C and condensing units.

GREEN GLOBES #3.1.1.3.17 - ANSI #8.3.3.3.1 : Heating Equipment

Does heating equipment base efficiency meet ANSI/ASHRAE/IES Standard 90.1-2013 efficiency requirements with respect to AFUE, Ec, Et, HSPF, or COPH as appropriate to the specific equipment? OR Does the building not have a heating system?

• Performance is 10% higher than the requirements of ANSI/ASHRAE/IES Standard 90.1-2013 (5 points) 
• Performance is 5% higher than the requirements of ANSI/ASHRAE/IES Standard 90.1-2013 (3 points) 
• Performance is equivalent to the requirements of ANSI/ ASHRAE/IES Standard 90.1-2013 (1 points) 
• There is electric resistance heat (0 points) 
• No (0 points) 
• N/A

Assessment Guidance

Not Applicable where the building does not use heating systems.

90.1-2013 TABLE	EQUIPMENT
Table 6.8.1-2	Unitary and applied heat pumps (heating mode)
Table 6.8.1-4	PTHP, single-package vertical heat pumps, and room A/C heat pumps (heating mode)
Table 6.8.1-5	Warm-air furnaces and unit heaters
Table 6.8.1-6	Gas and oil-fired boilers
Table 6.8.1-10	Variable refrigerant flow air-to-air and applied heat pumps

The design engineer must provide a weighted average improvement over efficiency based on the capacity for projects with multiple applicable types of equipment. Heating units constituting less than 1% of the total capacity may be omitted from the calculation.

Steam systems must return condensate to the boiler feed-water system or recover heat from the condensate before sending it to the drain in order to claim equipment efficiency points.

Table 6.8.1-10 also covers water source products.

References 

• ANSI/ASHRAE/IES Standard 90.1-2013

GREEN GLOBES #3.1.1.3.17.1 - ANSI #8.3.3.3.1

Describe the heating equipment technology and list the manufacturer.

Tooltip

HVAC systems typically account for the largest energy consumption in a building as well as contribute to occupant comfort and satisfaction.

Assessment Guidance

Heating equipment technology includes, but is not limited to, the following: 

• Unitary and applied heat pumps (heating mode),
• PTHP, single-package vertical heat pumps, and room A/C heat pumps (heating mode),
• Warm-air furnaces and unit heaters, 
• Gas and oil-fired boilers, or
• Variable refrigerant flow air-to-air, applied heat pumps, and water source products.

GREEN GLOBES #3.1.1.3.18 - ANSI #8.3.3.4.1 : Domestic Hot Water Heaters

Do all domestic hot water heaters meet the efficiency requirements of ANSI/ASHRAE/IES STANDARD 90.1-2013, Table 7.8?

OR

Are domestic hot water heaters not provided?

• Performance is 10% better than the requirements of ANSI/ASHRAE/IES Standard 90.1-2013 (1 points) 
• There is electric resistance heating (0 points) 
• No (0 points)

References 

• ANSI/ASHRAE/IES STANDARD 90.1-2013, Table 7.8

GREEN GLOBES #3.1.1.3.19 - ANSI #8.3.3.5.1 Energy Recovery Does the HVAC design comply with Section 6.5.6 of ANSI/ASHRAE/IES Standard 90.1-2013?

• Yes (6 points) 
• No (0 points) 
• N/A

Assessment Guidance

Not applicable where projects meet the exemptions of Section 6.5.6.

References 

• ANSI/ASHRAE/IES Standard 90.1-2013, Section 6.5.6

Recommended Documents 

• HVAC drawings

GREEN GLOBES #3.1.1.3.20 - ANSI #8.3.3.6.1 : Simultaneous Heating and Cooling

Does the HVAC design minimize or eliminate simultaneous heating and cooling through one of the following strategies? 

• HVAC design complies with Section 6.5.2 of the ANSI/ASHRAE/IES Standard 90.1-2013.

OR 

• HVAC design incorporates a configuration/strategy that eliminates reheat and re-cool by using thermal and ventilation compartmentalization, with heating, cooling, and ventilation provided independently for each zone, e.g., fan coil systems, distributed heat pumps, single-zone systems.
  • HVAC design uses ventilation compartmentalization (6 points) 
  • HVAC design complies with ASHRAE 90.1-2013, Section 6.5.2 (4 points) 
  • No (0 points) 
  • N/A

Assessment Guidance

Not applicable for projects that meet the exemptions of ASHRAE 90.1-2013, Section 6.5.2.

References 

• ANSI/ASHRAE/IES Standard 90.1-2013, Section 6.5.2

Recommended Documents 

• HVAC drawings

GREEN GLOBES #3.1.1.3.21 - ANSI #8.3.3.7.1 : Economizers

Does the project comply with Section 6.5.1 of ANSI/ASHRAE/IES Standard 90.1-2013?

• Yes (3 points)
• No (0 points)
• N/A

Assessment Guidance

Not applicable where projects meet the exemptions of ASHRAE 90.1-2013, Section 6.5.1.

References 

• ANSI/ASHRAE/IES Standard 90.1-2013, Section 6.5.1

GREEN GLOBES #3.1.1.3.22 - ANSI #8.3.3.8.1 : Air-Handling Equipment and Ventilation Control

Does the project uses equal or less fan power than the requirements of ANSI/ASHRAE/IES Standard 90.1-2013, Table 6.5.3.1-1 (including all exceptions and modifiers)?

• Yes, at 30%+ less than the allowance per Table 6.5.3.1-1 (6 points) 
• Yes, at 20 - 29% less than the allowance per Table 6.5.3.1-1 (5 points) 
• Yes, at 10 - 19% less than the allowance per Table 6.5.3.1-1 (4 points) 
• Yes, <10% less than the allowance per Table 6.5.3.1-1 (3 points)
• No (0 points) 
• N/A

Assessment Guidance

Three points are awarded for projects that comply with ANSI/ASHRAE/IES Standard 90.1-2013, Table 6.5.3.1-1. One additional point is earned for each 10% less than the allowance according to Table 6.5.3.1-1, up to an additional 3 points maximum.

References

• ANSI/ASHRAE/IES Standard 90.1-2013, Table 6.5.3.1-1

GREEN GLOBES #3.1.1.3.23 - ANSI #8.3.3.8.2 Are occupancy AND/OR CO2 sensors installed to control ventilation rates in regularly occupied spaces that may experience frequent variation in the number of occupants?

• Yes (3 points)
• No (0 points)
• N/A

Assessment Guidance

CO2 sensors maintain calibration within 2% for one year after initial installation.

Not applicable where spaces meeting this criterion represent less than 40% of the total design ventilation volume of the building.

GREEN GLOBES #3.1.1.3.24 - ANSI #8.3.4.1.1 ENERGY SIMULATION AIDED DESIGN & INTEGRATIVE PROCESS : Energy Simulation Aided Design

Was an energy simulation performed on a simplified geometric representation of the building to determine strategies to save lighting and HVAC energy before finalizing the building footprint?

• Yes (8 points)
• No (0 points)

Assessment Guidance

This simulation must include massing, orientation, window-to-wall ratio, and building envelope strategies.

Recommended Documents 

• The findings, as well as the name and contact information for the individual responsible for the energy modeling

GREEN GLOBES #3.1.1.3.1.25 - ANSI #8.3.4.2.1 : Integrative Process

Was a simulation used to inform design decisions regarding incremental equipment efficiency of building systems for the envelope, lighting, and HVAC before issuing construction documents?

• Yes (5 points)
• No (0 points)

Recommended Documents 

• The findings, as well as the name and contact information for the individual responsible for the energy modeling

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