High Performance Sequences of Operation for HVAC Systems
ASHRAE Guideline Project Committee 36


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Upcoming PC Meetings

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The monthly net meetings are generally held every 2nd Thursday of the month from 8am-10 or 11am Pacific Time.


The link to the monthly meeting follows:


You can also dial in using your phone.
United States: +1 (786) 535-3211


The GPC also meets at the ASHRAE Annual and Winter Conferences on Monday from 8am to noon local time.


Project Committee meeting minutes are available to interested parties upon written request of the Manager of Standards. Attachments to minutes may or may not be included due to file size and/or because copyrighted intellectual property is included. Decisions to distribute attachments to the minutes will be made on a case by case basis and due to the size of the request may take longer to process.

Title, Purpose, and Scope

The purpose of this guideline is to provide uniform sequences of operation for heating, ventilating, and air-conditioning (HVAC) systems that are intended to maximize HVAC system energy efficiency and performance, provide control stability, and allow for real-time fault detection and diagnostics.

2.1 This guideline provides detailed sequences of operation for HVAC systems.
2.2 This guideline describes functional tests that when performed will confirm implementation of the sequences of operation.


Committee Chair

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Steven Taylor


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Rick Stehmeyer


Upcoming Society Conferences

2020 Winter Conference
Feb 1-5, 2020
Orlando, FL

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About the Guideline

Guideline 36 was created by ASHRAE’s Technical Committee 1.4, Control Theory and Application to maintain and publish best-of-class control sequences that meet or exceed the requirements of published ASHRAE standards such as 90.1, 62.1 and 55. These sequences are intended for use with fully programmable DDC BAS systems controlling variable speed/capacity equipment.

The comment period for our second public review has ended.

The Guideline’s first formal publication will be high performance control sequences for airside HVAC equipment, including single zone VAV AHUs, multiple-zone VAV AHUs, and a variety of VAV terminal units.  These control sequences are based on Task 2, the written English language sequences of operation, from ASHRAE Research Project 1455, “Advanced Control Sequences for HVAC Systems – Phase I Air Distribution and Terminal Systems.”

The GPC meets at the Annual and Winter Meetings on Mondays from 8am noon local time.  We also have monthly net meetings that are normally held on the 2nd Thursday of each month from 8am-10am Pacific Time.  Go to the Meetings Page for the details.

In addition to help in writing the guideline we need control manufacturers and facility owners to participate in the programming and testing of these sequences in their hardware and facilities.

Please share this site with other potential interested parties, and have them contact Mark Hydeman  if they are interested in joining this committee.  We will need lots of help to get this important publication completed.

Mark Hydeman, PE, FASHRAE
Chair of GPC 36 (and Principal Investigator for RP-1455)