Electric Systems
ASHRAE Technical Committee 1.9

Scope of TC 1.9

This technical committee is concerned with electrical systems insofar as they interact with HVAC&R.


The ASHRAE Handbook is published in a series of four volumes, one of which is revised each year, ensuring that no volume is older than four years.

HVAC Applications: Electrical Considerations
Production, delivery, and use of electricity involve countless decisions made along the way, by hundreds of people and companies. This chapter focuses on the decisions to be made about the building and equipment. Creating a building that works means including the best designs available, communicating needs and capabilities, and planning ahead. For an owner-occupied building, the benefits of a properly designed building return to the owner throughout the building’s life. For tenant-occupied spaces, good design means fewer problems with tenant and building system interference (e.g., lighting or appliances in one suite disrupting computers in a neighboring suite).

The ASHRAE HVAC APPLICATIONS HANDBOOK may be purchased from the on-line bookstore by clicking on the highlighted text.

Comment on the Handbook: ASHRAE welcomes your comments on the Handbook or a specific Handbook chapter.  To submit a comment about any aspect or part of the Handbook series, you can use the Handbook Comment Form.

Review a Handbook Chapter: To provide your feedback about a specific Handbook chapter, you can answer the brief survey questions on the Handbook Chapter Review Form.


Technical committees develop and sponsor technical sessions at the winter and annual conferences. Information about their future technical program is discussed at each TC meeting and at the TC's Program Subcommittee meeting

ASHRAE publishes papers and transactions from presentations at its conference events. In addition, ASHRAE records most of the seminar sessions from its conferences on DVD. These DVDs are ideal for use at chapter meetings, in university courses, or company lunch and learns. Products available from the most recent conference may be found here.

Seminar 68: Mechanical Equipment Individual Current Harmonics and Impact on the Building’s Electrical Load, January 2021 https://events.rdmobile.com/Lists/Details/1099072 
The HVAC&R industry is trending towards variable speed technology such as electronically commutated motors (ECMs), variable frequency drives (VFD) motor solutions, variable speed compressors, chillers, pumps, fans, and variable refrigerant flow systems (VRF). Building owners and engineers are requesting HVAC&R equipment to comply with IEEE 519. The goal of this program is to help our participants avoid harmonics overfiltering and underfiltering. Both excessive and minimal harmonic filtration scenarios can cause issues with electrical and HVAC&R equipment. With industry demands of high energy standards (Title 24, ASHRAE 90.1, IECC), harmonics has emerged as an increasingly critical topic in the building industry.
Technical Committee: 1.11 Electric Motors and Motor Control, Co-Sponsoring Committee: 1.9 Electrical Systems

Got Demand Response? How Should Buildings Be Designed to Connect to the Smart Grid?
Track: Standards, Guidelines and Codes

Sponsor: 01.09 Electrical Systems, 07.05 Smart Building Systems
Chair: Randall Higa, P.E., Associate Member, Southern California Edison, Rosemead, CA

“Putting Your Meter (and Sub-meter) to Work for You” – Las Vegas, January 2011
Terry Sharp – Implementing Federal Metering Guidelines: How Many Meters and Where Do They Go?
 Jim Plourde – Designing Your Metering System to Help You Manage Your Energy Use
 Bruce B. Lindsay – Using Metered Data to Enhance Your Measurement and Verification of Energy Savings
 Kris Findley – The Utility’s Role In the Installation of Smart Meters for a Large Customer


Technical Committees are responsible for identifying research topics, proposing research projects, selecting bidders, and monitoring research projects funded by ASHRAE. Information about their specific research program is discussed at each TC meeting and at the TC’s Research Subcommittee meeting.


ASHRAE writes standards for the purpose of establishing consensus for: 1) methods of test for use in commerce and 2) performance criteria for use as facilitators with which to guide the industry. ASHRAE publishes the following three types of voluntary consensus standards: Method of Measurement or Test (MOT), Standard Design and Standard Practice. ASHRAE does not write rating standards unless a suitable rating standard will not otherwise be available. ASHRAE is accredited by the American National Standards Institute (ANSI) and follows ANSI's requirements for due process and standards development. Standards may be purchased at the ASHRAE Bookstore.


ASHRAE Technical FAQs are provided as a service to ASHRAE members, users of ASHRAE publications, and the general public. While every effort has been made to ensure their accuracy and reliability, they are advisory and provided for informational purposes only, and in many cases represent only one person’s view. They are not intended and should not e relied on as an official statement of ASHRAE. Technical questions not addressed may be submitted to the ASHRAE Technical Services department at tse@ashrae.net.

Other Activities

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