Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

HVAC SIMulation PLUS other systems (HVACSIM+)

The first version of HVACSIM+, which stands for “HVAC SIMulation PLUS other systems”, was introduced by National Institute of Standards and Technology (NIST) in 1985 as a computer simulation tool to simulate entire building systems. Since then, the HVACSIM+ computer program package and manuals have been distributed to researchers, students, and consultants in more than 40 countries around the world. Since the first distribution of the program to the public, a number of modifications have been made including the addition of the component models developed for the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) 825 project.

Related publications

  • Galler, M.A., Users Guide to the HVACSIM+ Configuration Tool, NISTIR, NIST, Coming August 2020.
  • Park, C., D.R. Clark, and G.E. Kelly, An Overview of HVACSIM+, A Dynamic Building/HVAC/Control Systems Simulation Program , Proceedings of the 1st Annual Building Energy Simulation Conf., Seattle, WA, August 21-22, 1985.
  • Clark, D.R., HVACSIM+ Building Systems and Equipment Simulation Program Reference Manual, NBSIR 84-2996, NIST, Jan. 1985.
  • Clark, D.R., and W.B. May, HVACSIM+ Building Systems and Equipment Simulation Program Users Guide, NBSIR 85-3243, NIST, Sept.1985.
  • Park, C., D.R. Clark, and G.E. Kelly, HVACSIM+ Building Systems and Equipment Simulation Program Building Loads Calculation, NBSIR 86-3331, NIST, Feb.1986.

Sample Screenshots

hvacsim_01
hvacsim_02
hvacsim_03
hvacsim_04
Created August 31, 2020, Updated November 16, 2020