ASHRAE Journal - May 2020 - 24

ROUNDTABLE

Drake Erbe, Member
ASHRAE, vice president market development, Airxchange,
Inc., Rockland, Md.

Len Sciarra, AIA, Member
ASHRAE, senior associate,
Gensler, Chicago

Jason Glazer, P.E., Member
ASHRAE, principal engineer,
GARD Analytics, Arlington
Heights, Ill.

Kelly Seeger, LC, Member
ASHRAE, Member IES,
technical policy director,
Signify, Burlington, Mass.

A Conversation on
Standard 90.1-2019
Q1: What are the major changes included in
ASHRAE/IES Standard 90.1-2019?
Drake Erbe: The 2019 version of Standard 90.1 centered around four major areas: reducing building
energy cost effectively, improving the standard clarity,
and continuing the viability of the standard into the
future.
Reducing Building Energy. It is the overall goal of each
cycle to create a consensus standard that saves energy,
is technically feasible, and is cost effective. This is then
afﬁrmed by the DOE in a determination and an additional cost analysis so that the current version becomes
the "standard of care" for the built environment community. This will be discussed in detail later.
Improving Clarity. Another overall goal is to increase
adoption of the standard in codes. One of the barriers to compliance has been the clarity of the standard,
which leads to understanding and can ultimately lead
to adoption. Great effort was expended in this version to address submittal documentation, removing or
improving deﬁnitions and references, and clarifying
all compliance paths especially in the area of additions
24

ASHRAE JOURNAL

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M AY 2020

and alterations. In addition, commissioning was greatly
enhanced in both Section 4, compliance as well as assistance provided in an
Informative Appendix. This also will be discussed in
more detail later.
Continued Viability. As the industry landscape evolves
it is necessary to continue looking forward to ensuring
viability of the standard. This will be discussed more
fully when addressing the next cycle in Question 6.
The individuals responsible for the effort will address
the detailed changes in their area in the following
content.
Q2: Can you help us understand the signiﬁcant differences in the envelope, mechanical, lighting, and
performance path sections of Standard 90.1-2019 versus the 2016 edition?
Leonard Sciarra: The most signiﬁcant technical
changes to building envelope requirements are as
follows:
1. Mandatory provisions include the addition of envelope veriﬁcation in support of reduced air inﬁltration

https://www.ashrae.org/

ASHRAE Journal - May 2020

Table of Contents for the Digital Edition of ASHRAE Journal - May 2020

Contents
ASHRAE Journal - May 2020 - Intro
ASHRAE Journal - May 2020 - Cover1
ASHRAE Journal - May 2020 - Cover2
ASHRAE Journal - May 2020 - 1
ASHRAE Journal - May 2020 - Contents
ASHRAE Journal - May 2020 - 3
ASHRAE Journal - May 2020 - 4
ASHRAE Journal - May 2020 - 5
ASHRAE Journal - May 2020 - 6
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ASHRAE Journal - May 2020 - Cover3
ASHRAE Journal - May 2020 - Cover4
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