Addenda to Standard 90.1-2019

ANSI/ASHRAE/IES Standard 90.1-2019, Energy Standard for Buildings Except Low-Rise Residential Buildings

Addendum a to Standard 90.1-2019 (October 30, 2020)

Addendum b to Standard 90.1-2019 (April 1, 2021)

Addendum c to Standard 90.1-2019 (October 30, 2020)

Addendum d to Standard 90.1-2019 (January 4, 2021)

Addendum f to Standard 90.1-2019 (February 26, 2021)

Addendum g to Standard 90.1-2019 (January 4, 2021)

Addendum h to Standard 90.1-2019 (October 30, 2020)

Addendum i to Standard 90.1-2019 (October 30, 2020)

Addendum k to Standard 90.1-2019 (October 30, 2020)

Addendum l to Standard 90.1-2019 (October 30, 2020)

Addendum m to Standard 90.1-2019 (October 30, 2020)

Addendum n to Standard 90.1-2019 (October 30, 2020)

Addendum o to Standard 90.1-2019 (July 30, 2021)

Addendum p to Standard 90.1-2019 (February 26, 2021)

Addendum q to Standard 90.1-2019 (February 26, 2021)

Addendum r to Standard 90.1-2019 (February 26, 2021)

Addendum s to Standard 90.1-2019 (February 26, 2021)

Addendum t to Standard 90.1-2019 (July 29, 2022)

Addendum u to Standard 90.1-2019 (July 30, 2021)

Addendum v to Standard 90.1-2019 (July 30, 2021)

Addendum w to Standard 90.1-2019 (February 26, 2021)

Addendum x to Standard 90.1-2019 (December 8, 2021)

Addendum y to Standard 90.1-2019 (December 8, 2021)

Addendum z to Standard 90.1-2019 (March 1, 2022)

Addendum aa to Standard 90.1-2019 (June 1, 2021)

Addendum ab to Standard 90.1-2019 (June 30, 2021)

 Addendum ac to Standard 90.1-2019 (July 29, 2022) 

Addendum ad to Standard 90.1-2019 (October 14, 2021)

Addendum ae to Standard 90.1-2019 (August 31, 2021)

Addendum ag to Standard 90.1-2019 (September 30, 2022)

Addendum ah to Standard 90.1-2019 (August 31, 2021)

Addenda af, bc, cd, and db to Standard 90.1-2019 (November 16, 2020)

Addendum aj to Standard 90.1-2019 (October 1, 2021)

Addendum ak to Standard 90.1-2019 (October 1, 2021)

 Addendum am to Standard 90.1-2019 (July 29, 2022) 

Addendum an to Standard 90.1-2019 (October 1, 2021)

Addendum ao to Standard 90.1-2019 (October 1, 2021)

Addendum ap to Standard 90.1-2019 (September 30, 2022)

 Addendum aq to Standard 90.1-2019 (July 29, 2022) 

Addendum ar to Standard 90.1-2019 (September 30, 2022)

Addendum as to Standard 90.1-2019 (January 27, 2022)

Addendum at to Standard 90.1-2019 (January 27, 2022)

Addendum au to Standard 90.1-2019 (January 21, 2022)

 Addendum av to Standard 90.1-2019 (July 29, 2022)

Addendum aw to Standard 90.1-2019 (January 21, 2022)

Addendum ay to Standard 90.1-2019 (September 30, 2022)

Addendum az to Standard 90.1-2019 (January 21, 2022)

Addendum ba to Standard 90.1-2019 (September 30, 2022)

Addendum bb to Standard 90.1-2019 (July 29, 2022)

Addendum bd to Standard 90.1-2019 (June 1, 2022)

Addendum be to Standard 90.1-2019 (January 21, 2022)

Addendum bf to Standard 90.1-2019 (June 1, 2022)

 Addendum bg to Standard 90.1-2019 (July 29, 2022) 

Addendum bh to Standard 90.1-2019 (January 21, 2022) 

 Addendum bi to Standard 90.1-2019 (July 29, 2022) 

 Addendum bj to Standard 90.1-2019 (July 29, 2022) 

Addendum bk to Standard 90.1-2019 (January 21, 2022)

Addendum bm to Standard 90.1-2019 (January 21, 2022)

Addendum bp to Standard 90.1-2019 (September 30, 2022)

 Addendum bq to Standard 90.1-2019 (July 29, 2022) 

 Addendum br to Standard 90.1-2019 (July 29, 2022) 

Addendum bs to Standard 90.1-2019 (July 29, 2022) 

Addendum bt to Standard 90.1-2019 (July 5, 2022)

Addendum bv to Standard 90.1-2019 (July 5, 2022)

Addendum bw to Standard 90.1-2019 (April 29, 2022)

 Addendum bx to Standard 90.1-2019 (July 29, 2022) 

Addenda by, ck, and cp to Standard 90.1-2019 (August 3, 2020)

Addendum bz to Standard 90.1-2019 (April 29, 2022)

Addendum cb to Standard 90.1-2019 (March 1, 2022)

Addendum cc to Standard 90.1-2019 (September 30, 2022)

Addendum ce to Standard 90.1-2019 (April 29, 2022)

Addendum cf to Standard 90.1-2019 (April 29, 2022)

Addendum cg to Standard 90.1-2019 (April 29, 2022)

Addendum ci to Standard 90.1-2019 (April 29, 2022)

Addendum cj to Standard 90.1-2019 (April 29, 2022)

 Addendum cm to Standard 90.1-2019 (July 29, 2022) 

 Addendum co to Standard 90.1-2019 (July 29, 2022) 

 Addendum cq to Standard 90.1-2019 (July 29, 2022) 

Addendum cr to Standard 90.1-2019 (December 15, 2020)

Addendum cs to Standard 90.1-2019 (July 5, 2022)

Addendum ct to Standard 90.1-2019 (July 5, 2022)

Addendum cu to Standard 90.1-2019 (July 5, 2022)

Addendum cy to Standard 90.1-2019 (September 30, 2022)

Addendum da to Standard 90.1-2019 (January 4, 2021)