Standard 90.1-2016 -- Energy Standard for Buildings Except Low-Rise Residential Buildings Share This. Energy Standard for Buildings Except Low-Rise Residential Buildings. A tool for modeling compliance with ASHRAE Standard 90.1-2010. Printed Edition + PDF; Immediate download; $203.00; Add to Cart. ASHRAE IC 90.1-2010-02. Free Download. October 2011. Interpretation IC 90.1-2010-02.

ANSI/ASHRAE/IES Standard 90.1-2010
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ANSI/ASHRAE/IES Standard 90.1: Energy Standard for Buildings Except Low-Rise Residential Buildings is an American National Standard published by ASHRAE and jointly sponsored by the IES that provides minimum requirements for energy efficient designs for buildings except for low-rise residential buildings (i.e. single-family homes, multi-family buildings less than four storeys high, mobile homes and modular homes). The original standard, ASHRAE 90, was published in 1975. There have been multiple editions to it since. In 1999 the ASHRAE Board of Directors voted to place the standard on continuous maintenance, based on rapid changes in energy technology and energy prices. This allows it to be updated multiple times in a year. The standard was renamed ASHRAE 90.1 in 2001.^[1] It has since been updated in 2004, 2007, 2010, 2013 and 2016 to reflect newer and more efficient technologies.^[2]

The energy standard is now available as a free downloadable PDF thanks to. ASHRAE has posted the I-P edition of ANSI/ASHRAE/IES Standard 90.1-277,. Consumed by the entire building, including equipment not regulated. The mechanical-related changes. ASHRAE 90.1-2016 updated to the. And/or fan-free systems. The 2010 standard introduced the requirement for. For details or to download a trial version visit Trane.com/TRACE3DPlus. Standard 62-1981, Ventilation for Acceptable Indoor Air Quality (PDF is not searchable). Standard 90.1-2010, Energy Standard for Buildings Except Low-Rise.

1Structure and form
3History and development

Structure and form[edit]

In general, there are two means, or paths for building designers to comply with ASHRAE 90.1:

Prescriptive path: All components of the building meet the minimum standards specified by ASHRAE 90.1.
Performance path: A proposed building design is demonstrated (through building performance simulation) to use less energy than a baseline building built to ASHRAE 90.1 specifications. This now has three paths. For code compliance there is Chapter 11, which compares an energy model for your building to an energy model for a barely compliant building with the same HVAC system and in the 2016 edition an Appendix G path was added that compares an energy model of your building against a baseline model based on the 2004 edition of Standard 90.1 and requires lower energy consumption that varies depending on the building type.

Within the sections of the standard, there are some variations to this. Some sections have mandatory provisions, simplified approaches, or trade-off opportunities.

Prescriptive path[edit]

ASHRAE 90.1 includes prescriptive requirements for the following:

Building Envelope (Section 5): minimum wall insulation, minimum roof insulation, roof reflectance, minimum glazing performance
HVAC (Section 6): minimum equipment efficiency, minimum system features, limitation on reheat, limitation on fan power
Domestic Hot Water (Section 7): minimum equipment efficiency, minimum system features
Power (Section 8): transformer efficiency, automatic receptacle controls, energy monitoring
Lighting (Section 9): maximum indoor lighting power density (LPD, expressed in Watts/Sq.Ft.), minimum lighting controls, exterior lighting, parking garage lighting
Other Equipment (Section 10): electric motors, potable water booster pumps, elevators, and escalators

Performance path[edit]

In the performance approach, a baseline Energy Cost Budget (ECB) is established, based on the building size and program. This baseline ECB is established using building performance simulation to model a building with the same size and program as the project building, built according to the prescriptive requirements of ASHRAE 90.1 (sections 5-10). The ECB is expressed in units of dollars.

A building performance simulation is then performed on the proposed building design. The proposed energy cost budget must be less than or equal to the baseline energy cost budget to achieve compliance.

The performance approach is also used to demonstrate design energy efficiency, often expressed as percent better than ASHRAE Standard 90.1. Building designs will stated their performance as '40% better than ASHRAE 90.1-2007' or '20% better than ASHRAE 90.1-2010'. Percent improvement over ASHRAE 90.1 is the basis for awarding energy points within the LEED rating system.

Status as an energy code and industry standard[edit]

Many states apply ASHRAE 90.1 to buildings being constructed or under renovation. Most states apply the standard or equivalent standards for all commercial buildings. Others apply the standard or equivalent standards for all government buildings. There are some states that use other energy conservation standards for all commercial buildings and some other states that use a combination of the ASHRAE 90.1 standard for all government buildings and use other energy conservation standards for their commercial buildings. A few states do not apply any energy conservation standards for their government and commercial buildings.^[3]

Current status of adoption into energy codes is tracked by the Building Codes Assistance Project. As of Januar

ANSI/ASHRAE/IES Standard 90.1-2010

Cost-effectiveness of ASHRAE Standard 90.1-2010 Compared to ASHRAE Standard 90.1-2007

Cost-effectiveness of ASHRAE Standard 90.1-2010 Compared to ASHRAE Standard 90.1-2007

National Cost-effectiveness of ASHRAE Standard 90.1-2010 Compared to ASHRAE Standard 90.1 ...

Cost-effectiveness of ASHRAE Standard 90.1-2010 Compared to ASHRAE Standard 90.1-2007

Cost-effectiveness of ASHRAE Standard 90.1-2010 Compared to ASHRAE Standard 90.1-2007

2013 Addenda Supplement to ANSI/ASHRAE/IES Standard 90.1-2010

Energy and Cost Savings Analysis of ASHRAE Standard 90.1-2010

ANSI/ASHRAE/IES Standard 90.1-2010 Performance Rating Method Reference Manual

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Structure and form[edit]

Prescriptive path[edit]

Performance path[edit]

Status as an energy code and industry standard[edit]

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